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<meta property="og:description" content="SpringBoot + zxing 生成二维码 SpringBoot + qrcode生成二维码 原视频地址: Java生成二维码教程 | 两小时学会Java生成二维码 源码地址: JasonsGong/two-dimensional-code: 使用java生成二维码 (github.com) 一.谷歌zxing开源库生成二维码1.创建一个sprinBoot项目 2.引入相关的依">
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})(window)</script><script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><script type="text/javascript" src ="/js/welcome.js" ></script><script src="/js/sweetalert.js"></script><link rel="stylesheet" href="/css/sweetalert.css"><!-- hexo injector head_end start --><link rel="stylesheet" href="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiper.min.css" media="print" onload="this.media='all'"><link rel="stylesheet" href="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiperstyle.css" media="print" onload="this.media='all'"><!-- hexo injector head_end end --><meta name="generator" content="Hexo 6.3.0"></head><body><div id="sidebar"><div id="menu-mask"></div><div id="sidebar-menus"><div class="avatar-img is-center"><img src="/img/avatar.jpg" onerror="onerror=null;src='/img/loading.gif'" alt="avatar"/></div><div class="sidebar-site-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">60</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">39</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">10</div></a></div><br/><div class="menus_items"><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://www.tutorialspoint.com/compile_java8_online.php"><i class="fa-fw fas fa-code"></i><span> 代码</span></a></div><div class="menus_item"><a class="site-page" href="/notice/"><i class="fa-fw fas fa-stream"></i><span> 公告</span></a></div><div class="menus_item"><a class="site-page" href="/website/"><i class="fa-fw fas fa-list"></i><span> 网址</span></a></div><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> 主页</span></a></div></div></div></div><div class="post" id="body-wrap"><header class="not-top-img" id="page-header"><nav id="nav"><span id="blog-info"><a href="/" title="The Blog"><img class="site-icon" src="/img/logo.png"/><span class="site-name">The Blog</span></a></span><div id="menus"><div id="search-button"><a class="site-page social-icon search" href="javascript:void(0);"><i class="fas fa-search fa-fw"></i><span> 搜索</span></a></div><div class="menus_items"><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://www.tutorialspoint.com/compile_java8_online.php"><i class="fa-fw fas fa-code"></i><span> 代码</span></a></div><div class="menus_item"><a class="site-page" href="/notice/"><i class="fa-fw fas fa-stream"></i><span> 公告</span></a></div><div class="menus_item"><a class="site-page" href="/website/"><i class="fa-fw fas fa-list"></i><span> 网址</span></a></div><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> 主页</span></a></div></div><div id="toggle-menu"><a class="site-page" href="javascript:void(0);"><i class="fas fa-bars fa-fw"></i></a></div></div></nav></header><main class="layout" id="content-inner"><div id="post"><div id="post-info"><h1 class="post-title">Java生成二维码</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2023-08-28T13:38:35.000Z" title="发表于 2023-08-28 21:38:35">2023-08-28</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2024-05-10T05:31:11.663Z" title="更新于 2024-05-10 13:31:11">2024-05-10</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="/categories/%E5%90%8E%E7%AB%AF/">后端</a></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span class="post-meta-wordcount"><i class="far fa-file-word fa-fw post-meta-icon"></i><span class="post-meta-label">字数总计:</span><span class="word-count">3.9k</span><span class="post-meta-separator">|</span><i class="far fa-clock fa-fw post-meta-icon"></i><span class="post-meta-label">阅读时长:</span><span>19分钟</span></span><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="Java生成二维码"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div><article class="post-content" id="article-container"><div class="note success flat"><p>SpringBoot + zxing 生成二维码</p>
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<p>SpringBoot + qrcode生成二维码</p>
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<p>原视频地址: <a target="_blank" rel="noopener" href="https://www.bilibili.com/video/BV1Kw41197kh/?share_source=copy_web&vd_source=aee5e475191b69e6c781059ab6662584">Java生成二维码教程 | 两小时学会Java生成二维码</a></p>
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<p>源码地址: <a target="_blank" rel="noopener" href="https://github.com/JasonsGong/two-dimensional-code">JasonsGong/two-dimensional-code: 使用java生成二维码 (github.com)</a></p>
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</div>
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<h2 id="一-谷歌zxing开源库生成二维码"><a href="#一-谷歌zxing开源库生成二维码" class="headerlink" title="一.谷歌zxing开源库生成二维码"></a>一.谷歌zxing开源库生成二维码</h2><h3 id="1-创建一个sprinBoot项目"><a href="#1-创建一个sprinBoot项目" class="headerlink" title="1.创建一个sprinBoot项目"></a>1.创建一个sprinBoot项目</h3><p><img src="/pictures/image-20230828215513289.png" alt="image-20230828215513289"></p>
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<h3 id="2-引入相关的依赖"><a href="#2-引入相关的依赖" class="headerlink" title="2.引入相关的依赖"></a>2.引入相关的依赖</h3><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">dependencies</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">dependency</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">groupId</span>></span>org.springframework.boot<span class="tag"></<span class="name">groupId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">artifactId</span>></span>spring-boot-starter-web<span class="tag"></<span class="name">artifactId</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">dependency</span>></span></span><br><span class="line"></span><br><span class="line"> <span class="tag"><<span class="name">dependency</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">groupId</span>></span>org.springframework.boot<span class="tag"></<span class="name">groupId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">artifactId</span>></span>spring-boot-starter-test<span class="tag"></<span class="name">artifactId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">scope</span>></span>test<span class="tag"></<span class="name">scope</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">dependency</span>></span></span><br><span class="line"></span><br><span class="line"> <span class="tag"><<span 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<h3 id="3-在templates目录下新建index-html文件"><a href="#3-在templates目录下新建index-html文件" class="headerlink" title="3.在templates目录下新建index.html文件"></a>3.在templates目录下新建index.html文件</h3><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><!DOCTYPE <span class="keyword">html</span>></span></span><br><span class="line"><span class="tag"><<span class="name">html</span> <span class="attr">lang</span>=<span class="string">"en"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">meta</span> <span class="attr">charset</span>=<span class="string">"UTF-8"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">title</span>></span>Title<span class="tag"></<span class="name">title</span>></span></span><br><span class="line"><span class="tag"></<span class="name">head</span>></span></span><br><span class="line"><span class="tag"><<span class="name">body</span>></span></span><br><span class="line"></span><br><span class="line"><span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure>
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<h3 id="4-编写controller跳转到该页面，完成后重启项目，访问localhost-8080-测试"><a href="#4-编写controller跳转到该页面，完成后重启项目，访问localhost-8080-测试" class="headerlink" title="4.编写controller跳转到该页面，完成后重启项目，访问localhost:8080 测试"></a>4.编写controller跳转到该页面，完成后重启项目，访问localhost:8080 测试</h3><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">CodeController</span> {</span><br><span class="line"></span><br><span class="line"> <span class="meta">@GetMapping("/")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">index</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"index"</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<h3 id="5-打开index-html，编写前端页面"><a href="#5-打开index-html，编写前端页面" class="headerlink" title="5.打开index.html，编写前端页面"></a>5.打开index.html，编写前端页面</h3><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><!DOCTYPE <span class="keyword">html</span>></span></span><br><span class="line"><span class="tag"><<span class="name">html</span> <span class="attr">lang</span>=<span class="string">"en"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">meta</span> <span class="attr">charset</span>=<span class="string">"UTF-8"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">title</span>></span>二维码<span class="tag"></<span class="name">title</span>></span></span><br><span class="line"><span class="tag"></<span class="name">head</span>></span></span><br><span class="line"><span class="tag"><<span class="name">body</span>></span></span><br><span class="line"><span class="tag"><<span class="name">h1</span>></span>谷歌zxing开源库生成黑白二维码<span class="tag"></<span class="name">h1</span>></span></span><br><span class="line"><span class="tag"><<span class="name">hr</span>></span></span><br><span class="line">请输入文本内容:<span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"text"</span> <span class="attr">id</span>=<span class="string">"url"</span>></span><span class="tag"><<span class="name">button</span> <span class="attr">onclick</span>=<span class="string">"generateQRCode()"</span>></span>生成二维码<span class="tag"></<span class="name">button</span>></span><span class="tag"><<span class="name">br</span>></span></span><br><span class="line"><span class="tag"><<span class="name">img</span> <span class="attr">id</span>=<span class="string">"qrCodeImg"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">script</span>></span><span class="language-javascript"></span></span><br><span class="line"><span class="language-javascript"> <span class="keyword">function</span> <span class="title function_">generateQRCode</span>(<span class="params"></span>){</span></span><br><span class="line"><span class="language-javascript"> <span class="comment">//获取url</span></span></span><br><span class="line"><span class="language-javascript"> <span class="keyword">let</span> url = <span class="variable language_">document</span>.<span class="title function_">getElementById</span>(<span class="string">"url"</span>).<span class="property">value</span></span></span><br><span class="line"><span class="language-javascript"> <span class="comment">//设置img标签的src属性</span></span></span><br><span class="line"><span class="language-javascript"> <span class="keyword">let</span> qrCodeImg = <span class="variable language_">document</span>.<span class="title function_">getElementById</span>(<span class="string">"qrCodeImg"</span>)</span></span><br><span class="line"><span class="language-javascript"> qrCodeImg.<span class="property">src</span> = <span class="string">"/generate?url="</span>+ url</span></span><br><span class="line"><span class="language-javascript"> }</span></span><br><span class="line"><span class="language-javascript"></span><span class="tag"></<span class="name">script</span>></span></span><br><span class="line"><span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure>
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<p>由于后端部分没有编写，这时我们访问项目的时候会返回404</p>
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<p><img src="/pictures/image-20230828223201038.png" alt="image-20230828223201038"></p>
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<h3 id="6-后端代码的编写"><a href="#6-后端代码的编写" class="headerlink" title="6.后端代码的编写"></a>6.后端代码的编写</h3><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.google.zxing.BarcodeFormat;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.EncodeHintType;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.MultiFormatWriter;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.aztec.encoder.AztecCode;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.common.BitMatrix;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;</span><br><span class="line"><span class="keyword">import</span> lombok.extern.slf4j.Slf4j;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.ResponseBody;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.ServletOutputStream;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.util.HashMap;</span><br><span class="line"><span class="keyword">import</span> java.util.Map;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/28</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span></span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Slf4j</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">CodeController</span> {</span><br><span class="line"></span><br><span class="line"> <span class="meta">@GetMapping("/")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">index</span><span class="params">()</span> {</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"index"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="meta">@GetMapping("/generate")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generate</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response)</span> {</span><br><span class="line"> log.info(<span class="string">"文本内容:{}"</span>, url);</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//创建一个map集合，存储二维码的相关属性</span></span><br><span class="line"> <span class="type">Map</span> <span class="variable">map</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">HashMap</span><>();</span><br><span class="line"> <span class="comment">//EncodeHintType 编码的提示类型</span></span><br><span class="line"> <span class="comment">//设置二维码的误差校正级别 可选值有 L(7%) M(15%) Q(25%) H(30%)</span></span><br><span class="line"> <span class="comment">//选择L级别的容错率，相当于允许二维码在整体的颜色区域中，最多有7%的坏像素点;择H级别的容错率，相当于允许二维码在整体的颜色区域中，最多有30%的坏像素点</span></span><br><span class="line"> map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);</span><br><span class="line"> <span class="comment">//设置二维码的字符集</span></span><br><span class="line"> map.put(EncodeHintType.CHARACTER_SET, <span class="string">"utf-8"</span>);</span><br><span class="line"> <span class="comment">//设置二维码四周的留白 1表示1像素</span></span><br><span class="line"> map.put(EncodeHintType.MARGIN, <span class="number">1</span>);</span><br><span class="line"> <span class="comment">//创建zxing的核心对象MultiFormatWriter (多格式写入器)</span></span><br><span class="line"> <span class="comment">//通过MultiFormatWriter对象来生成二维码</span></span><br><span class="line"> <span class="type">MultiFormatWriter</span> <span class="variable">writer</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">MultiFormatWriter</span>();</span><br><span class="line"> <span class="comment">//参数一:内容</span></span><br><span class="line"> <span class="comment">//参数二:二维码格式</span></span><br><span class="line"> <span class="comment">//BarcodeFormat(码格式) QR_CODE ：常见的二维码格式之一，广泛应用于商品包装、扫码支付</span></span><br><span class="line"> <span class="comment">//AZTEC_CODE：高密度，可靠性很高 容错率更低 储存个人信息、证件信息、账户密码</span></span><br><span class="line"> <span class="comment">//PDF417 可以存储大量的信息 数据密度高 应用于航空机票、配送标签、法律文件</span></span><br><span class="line"> <span class="comment">//DATA_MATRIX: 小巧的二维码格式 编码格式类似于QR_CODE 但是优于QR_CODE 适合嵌入简单的产品标签 医疗图像 检测数据</span></span><br><span class="line"> <span class="comment">//参数三四:二维码的宽度和高度</span></span><br><span class="line"> <span class="comment">//参数五:二维码参数</span></span><br><span class="line"> <span class="comment">//位矩阵对象 （位矩阵对象对象的内部实际上是一个二位数组，二维数组中每一个元素是boolean类型 true代表黑色 false代表白色）</span></span><br><span class="line"> <span class="type">BitMatrix</span> <span class="variable">bitMatrix</span> <span class="operator">=</span> writer.encode(url, BarcodeFormat.QR_CODE, <span class="number">300</span>, <span class="number">300</span>, map);</span><br><span class="line"> <span class="comment">//获取矩阵的宽度和高度</span></span><br><span class="line"> <span class="type">int</span> <span class="variable">width</span> <span class="operator">=</span> bitMatrix.getWidth();</span><br><span class="line"> <span class="type">int</span> <span class="variable">height</span> <span class="operator">=</span> bitMatrix.getHeight();</span><br><span class="line"> <span class="comment">//生成二维码图片</span></span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">BufferedImage</span>(width, height, BufferedImage.TYPE_INT_BGR);</span><br><span class="line"> <span class="comment">//遍历位矩阵对象</span></span><br><span class="line"> <span class="keyword">for</span> (<span class="type">int</span> <span class="variable">x</span> <span class="operator">=</span> <span class="number">0</span>; x < width; x++) {</span><br><span class="line"> <span class="keyword">for</span> (<span class="type">int</span> <span class="variable">y</span> <span class="operator">=</span> <span class="number">0</span>; y < height; y++) {</span><br><span class="line"> <span class="comment">//设置每一块的颜色值</span></span><br><span class="line"> <span class="comment">//0xFF000000表示黑色 0xFFFFFFFF表示白色</span></span><br><span class="line"> image.setRGB(x, y, bitMatrix.get(x, y) ? <span class="number">0xFF000000</span> : <span class="number">0xFFFFFFFF</span>);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//将图片响应到客户端</span></span><br><span class="line"> <span class="type">ServletOutputStream</span> <span class="variable">out</span> <span class="operator">=</span> response.getOutputStream();</span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,out);</span><br><span class="line"> out.flush();</span><br><span class="line"> out.close();</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<h3 id="7-测试生成二维码"><a href="#7-测试生成二维码" class="headerlink" title="7.测试生成二维码"></a>7.测试生成二维码</h3><p><img src="/pictures/image-20230828233052417.png" alt="image-20230828233052417"></p>
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<p><strong>完整的项目结构</strong></p>
|
||
<p><img src="/pictures/image-20230828233917645.png" alt="image-20230828233917645"></p>
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||
<h3 id="8-生成一个带Logo的黑白二维码"><a href="#8-生成一个带Logo的黑白二维码" class="headerlink" title="8.生成一个带Logo的黑白二维码"></a>8.生成一个带Logo的黑白二维码</h3><p><strong>1.编写qrcode.html页面和跳转到该页面的controller</strong></p>
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<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><!DOCTYPE <span class="keyword">html</span>></span></span><br><span class="line"><span class="tag"><<span class="name">html</span> <span class="attr">lang</span>=<span class="string">"en"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">meta</span> <span class="attr">charset</span>=<span class="string">"UTF-8"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">title</span>></span>生成带logo的黑白二维码<span class="tag"></<span class="name">title</span>></span></span><br><span class="line"><span class="tag"></<span class="name">head</span>></span></span><br><span class="line"><span class="tag"><<span class="name">body</span>></span></span><br><span class="line"><span class="tag"><<span class="name">form</span> <span class="attr">action</span>=<span class="string">"/generateWithLogo"</span> <span class="attr">method</span>=<span class="string">"post"</span> <span class="attr">enctype</span>=<span class="string">"multipart/form-data"</span>></span></span><br><span class="line"> 请输入文本内容:<span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"text"</span> <span class="attr">name</span>=<span class="string">"url"</span>></span><span class="tag"><<span class="name">br</span>></span></span><br><span class="line"> 请选择logo图片:<span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"file"</span> <span class="attr">name</span>=<span class="string">"logo"</span>></span><span class="tag"><<span class="name">br</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"submit"</span> <span class="attr">value</span>=<span class="string">"生成二维码"</span>></span></span><br><span class="line"><span class="tag"></<span class="name">form</span>></span></span><br><span class="line"><span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure>
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 跳转到生成带logo的黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@GetMapping("/logo")</span></span><br><span class="line"><span class="keyword">public</span> String <span class="title function_">toLogo</span><span class="params">()</span> {</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"qrcode"</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<p><strong>2.编写后端生成二维码逻辑</strong></p>
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 生成带logo的黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@PostMapping("/generateWithLogo")</span></span><br><span class="line"><span class="keyword">public</span> String <span class="title function_">generateWithLogo</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span> {</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="type">Map</span> <span class="variable">map</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">HashMap</span><>();</span><br><span class="line"> map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);</span><br><span class="line"> map.put(EncodeHintType.CHARACTER_SET, <span class="string">"utf-8"</span>);</span><br><span class="line"> map.put(EncodeHintType.MARGIN, <span class="number">1</span>);</span><br><span class="line"> <span class="type">MultiFormatWriter</span> <span class="variable">writer</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">MultiFormatWriter</span>();</span><br><span class="line"> <span class="type">BitMatrix</span> <span class="variable">bitMatrix</span> <span class="operator">=</span> writer.encode(url, BarcodeFormat.QR_CODE, <span class="number">300</span>, <span class="number">300</span>, map);</span><br><span class="line"> <span class="type">int</span> <span class="variable">width</span> <span class="operator">=</span> bitMatrix.getWidth();</span><br><span class="line"> <span class="type">int</span> <span class="variable">height</span> <span class="operator">=</span> bitMatrix.getHeight();</span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">BufferedImage</span>(width, height, BufferedImage.TYPE_INT_BGR);</span><br><span class="line"> <span class="keyword">for</span> (<span class="type">int</span> <span class="variable">x</span> <span class="operator">=</span> <span class="number">0</span>; x < width; x++) {</span><br><span class="line"> <span class="keyword">for</span> (<span class="type">int</span> <span class="variable">y</span> <span class="operator">=</span> <span class="number">0</span>; y < height; y++) {</span><br><span class="line"> image.setRGB(x, y, bitMatrix.get(x, y) ? <span class="number">0xFF000000</span> : <span class="number">0xFFFFFFFF</span>);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//给二维码添加logo</span></span><br><span class="line"> <span class="comment">//1.获取logo</span></span><br><span class="line"> <span class="type">Part</span> <span class="variable">logoPart</span> <span class="operator">=</span> request.getPart(<span class="string">"logo"</span>);</span><br><span class="line"> <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> logoPart.getInputStream();</span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">logoImage</span> <span class="operator">=</span> ImageIO.read(inputStream);</span><br><span class="line"> <span class="comment">//2.对获取的logo图片进行缩放</span></span><br><span class="line"> <span class="type">int</span> <span class="variable">logoWidth</span> <span class="operator">=</span> logoImage.getWidth(<span class="literal">null</span>);</span><br><span class="line"> <span class="type">int</span> <span class="variable">logoHeight</span> <span class="operator">=</span> logoImage.getHeight(<span class="literal">null</span>);</span><br><span class="line"> <span class="keyword">if</span> (logoWidth > <span class="number">60</span>){</span><br><span class="line"> logoWidth = <span class="number">60</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span> (logoHeight > <span class="number">60</span>){</span><br><span class="line"> logoHeight = <span class="number">60</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//使用平滑缩放算法对原始的logo图像进行缩放到一个全新的图像</span></span><br><span class="line"> <span class="type">Image</span> <span class="variable">scaledLogo</span> <span class="operator">=</span> logoImage.getScaledInstance(logoWidth, logoHeight, Image.SCALE_SMOOTH);</span><br><span class="line"> <span class="comment">//3.将缩放的图片画在黑白的二维码上</span></span><br><span class="line"> <span class="comment">//获取一个画笔</span></span><br><span class="line"> <span class="type">Graphics2D</span> <span class="variable">graphics2D</span> <span class="operator">=</span> image.createGraphics();</span><br><span class="line"> <span class="comment">//计算从哪里开始画 300指的是二维码的宽度和高度</span></span><br><span class="line"> <span class="type">int</span> <span class="variable">x</span> <span class="operator">=</span> (<span class="number">300</span> - logoWidth) /<span class="number">2</span>;</span><br><span class="line"> <span class="type">int</span> <span class="variable">y</span> <span class="operator">=</span> (<span class="number">300</span> - logoHeight) /<span class="number">2</span>;</span><br><span class="line"> <span class="comment">//画上去</span></span><br><span class="line"> graphics2D.drawImage(scaledLogo,x,y,<span class="literal">null</span>);</span><br><span class="line"> <span class="comment">//实现logo的圆角效果</span></span><br><span class="line"> <span class="type">Shape</span> <span class="variable">shape</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">RoundRectangle2D</span>.Float(x, y, logoWidth, logoHeight, <span class="number">10</span>, <span class="number">10</span>);</span><br><span class="line"> <span class="comment">//使用一个宽度为4像素的基本笔触</span></span><br><span class="line"> graphics2D.setStroke(<span class="keyword">new</span> <span class="title class_">BasicStroke</span>(<span class="number">4f</span>));</span><br><span class="line"> <span class="comment">//给logo画圆角矩形</span></span><br><span class="line"> graphics2D.draw(shape);</span><br><span class="line"> <span class="comment">//释放画笔</span></span><br><span class="line"> graphics2D.dispose();</span><br><span class="line"> <span class="comment">//将二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image, <span class="string">"png"</span>, response.getOutputStream());</span><br><span class="line"> <span class="comment">//关闭流</span></span><br><span class="line"> inputStream.close();</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<p>访问 <a target="_blank" rel="noopener" href="http://localhost:8080/logo">http://localhost:8080/logo</a> 测试</p>
|
||
<p><strong>实现的效果</strong></p>
|
||
<p><img src="/pictures/image-20230829160901904.png" alt="image-20230829160901904"></p>
|
||
<p><img src="/pictures/image-20230829160938795.png" alt="image-20230829160938795"></p>
|
||
<h2 id="二-github开源项目qrcode生成二维码"><a href="#二-github开源项目qrcode生成二维码" class="headerlink" title="二.github开源项目qrcode生成二维码"></a>二.github开源项目qrcode生成二维码</h2><h3 id="1-引入依赖文件"><a href="#1-引入依赖文件" class="headerlink" title="1.引入依赖文件"></a>1.引入依赖文件</h3><p>这里就不在重新创建工程了，直接在上面工程的基础上操作</p>
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<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">dependency</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">groupId</span>></span>com.github.liuyueyi.media<span class="tag"></<span class="name">groupId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">artifactId</span>></span>qrcode-plugin<span class="tag"></<span class="name">artifactId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">version</span>></span>2.5.2<span class="tag"></<span class="name">version</span>></span></span><br><span class="line"><span class="tag"></<span class="name">dependency</span>></span></span><br></pre></td></tr></table></figure>
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<h3 id="2-生成黑白二维码"><a href="#2-生成黑白二维码" class="headerlink" title="2.生成黑白二维码"></a>2.生成黑白二维码</h3><p><strong>1.创建github-qrcode.html文件</strong></p>
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<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><!DOCTYPE <span class="keyword">html</span>></span></span><br><span class="line"><span class="tag"><<span class="name">html</span> <span class="attr">lang</span>=<span class="string">"en"</span>></span></span><br><span class="line"><span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">meta</span> <span class="attr">charset</span>=<span class="string">"UTF-8"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">title</span>></span>qrcode生成黑白二维码<span class="tag"></<span class="name">title</span>></span></span><br><span class="line"><span class="tag"></<span class="name">head</span>></span></span><br><span class="line"><span class="tag"><<span class="name">body</span>></span></span><br><span class="line"><span class="tag"><<span class="name">h1</span>></span>使用github上的开源项目qrcode生成二维码<span class="tag"></<span class="name">h1</span>></span></span><br><span class="line"><span class="tag"><<span class="name">hr</span>></span></span><br><span class="line"><span class="tag"><<span class="name">form</span> <span class="attr">action</span>=<span class="string">"/generateWithQrCode"</span> <span class="attr">method</span>=<span class="string">"post"</span> <span class="attr">enctype</span>=<span class="string">"multipart/form-data"</span>></span></span><br><span class="line"> 请输入文本内容:<span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"text"</span> <span class="attr">name</span>=<span class="string">"url"</span>></span><span class="tag"><<span class="name">br</span>></span></span><br><span class="line"> 请选择logo图片:<span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"file"</span> <span class="attr">name</span>=<span class="string">"logo"</span>></span><span class="tag"><<span class="name">br</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">input</span> <span class="attr">type</span>=<span class="string">"submit"</span> <span class="attr">value</span>=<span class="string">"生成二维码"</span>></span></span><br><span class="line"><span class="tag"></<span class="name">form</span>></span></span><br><span class="line"><span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure>
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|
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<p><strong>2.编写controller处理请求</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成二维码</span></span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url).asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,response.getOutputStream());</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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||
|
||
<p><strong>3.访问测试</strong></p>
|
||
<p><img src="/pictures/image-20230829223442421.png" alt="image-20230829223442421"></p>
|
||
<h3 id="3-生成带有logo的黑白二维码"><a href="#3-生成带有logo的黑白二维码" class="headerlink" title="3.生成带有logo的黑白二维码"></a>3.生成带有logo的黑白二维码</h3><p>前端页面延续使用上面的github-qrcode.html</p>
|
||
<p><strong>1.后端代码的编写</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成二维码</span></span><br><span class="line"> <span class="comment">//生成黑白的二维码</span></span><br><span class="line"> <span class="comment">//BufferedImage image = QrCodeGenWrapper.of(url).asBufferedImage();</span></span><br><span class="line"> <span class="comment">//生成带logo的黑白二维码</span></span><br><span class="line"> <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> request.getPart(<span class="string">"logo"</span>).getInputStream();</span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url)</span><br><span class="line"> .setLogo(inputStream)<span class="comment">//logo图片的输入流</span></span><br><span class="line"> .setLogoRate(<span class="number">7</span>)<span class="comment">//设置logo图片和二维码之间的比例，7表示logo的宽度等于二维码的1/7</span></span><br><span class="line"> .setLogoStyle(QrCodeOptions.LogoStyle.ROUND)<span class="comment">//设置logo图片的样式，将logo的边框形状设置成圆形</span></span><br><span class="line"> .asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,response.getOutputStream());</span><br><span class="line"> <span class="comment">//关闭流</span></span><br><span class="line"> inputStream.close();</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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|
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<p><strong>实现的效果</strong></p>
|
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<p><img src="/pictures/image-20230829224339809.png" alt="image-20230829224339809"></p>
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||
<h3 id="4-生成彩色的二维码"><a href="#4-生成彩色的二维码" class="headerlink" title="4.生成彩色的二维码"></a>4.生成彩色的二维码</h3><p>前端页面延续使用上面的github-qrcode.html</p>
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<p><strong>1.后端代码的编写</strong></p>
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||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.*;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成彩色的二维码</span></span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url).setDrawPreColor(Color.GREEN).asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,response.getOutputStream());</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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|
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<p><strong>实现的效果</strong></p>
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<p><img src="/pictures/image-20230829225017032.png" alt="image-20230829225017032"></p>
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<h3 id="5-生成带有背景图的二维码"><a href="#5-生成带有背景图的二维码" class="headerlink" title="5.生成带有背景图的二维码"></a>5.生成带有背景图的二维码</h3><p>前端页面延续使用上面的github-qrcode.html</p>
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<p><strong>1.后端代码的编写</strong></p>
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.*;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成带有背景图的二维码</span></span><br><span class="line"> <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> request.getPart(<span class="string">"logo"</span>).getInputStream();</span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url)</span><br><span class="line"> .setBgImg(inputStream)</span><br><span class="line"> .setBgOpacity(<span class="number">0.5F</span>)<span class="comment">//设置透明度</span></span><br><span class="line"> .asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,response.getOutputStream());</span><br><span class="line"> <span class="comment">//关闭流</span></span><br><span class="line"> inputStream.close();</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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||
|
||
<p><strong>实现的效果</strong></p>
|
||
<p><img src="/pictures/image-20230829225740156.png" alt="image-20230829225740156"></p>
|
||
<h3 id="6-生成特殊形状的二维码"><a href="#6-生成特殊形状的二维码" class="headerlink" title="6.生成特殊形状的二维码"></a>6.生成特殊形状的二维码</h3><p>前端页面延续使用上面的github-qrcode.html</p>
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||
<p><strong>1.后端代码的编写</strong></p>
|
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.*;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成特殊形状的二维码</span></span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url)</span><br><span class="line"> .setDrawEnableScale(<span class="literal">true</span>)<span class="comment">//启用二维码绘制时的缩放功能</span></span><br><span class="line"> .setDrawStyle(QrCodeOptions.DrawStyle.DIAMOND)<span class="comment">//绘制钻石形状的二维码</span></span><br><span class="line"> .asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image,<span class="string">"png"</span>,response.getOutputStream());</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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||
|
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<p><strong>实现的效果</strong></p>
|
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<p><img src="/pictures/image-20230829230236500.png" alt="image-20230829230236500"></p>
|
||
<h3 id="7-生成图片填充二维码"><a href="#7-生成图片填充二维码" class="headerlink" title="7.生成图片填充二维码"></a>7.生成图片填充二维码</h3><p>前端页面延续使用上面的github-qrcode.html</p>
|
||
<p><strong>1.后端代码的编写</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.mine.code.controller;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeDeWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeGenWrapper;</span><br><span class="line"><span class="keyword">import</span> com.github.hui.quick.plugin.qrcode.wrapper.QrCodeOptions;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.WriterException;</span><br><span class="line"><span class="keyword">import</span> com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Controller;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.GetMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.PostMapping;</span><br><span class="line"><span class="keyword">import</span> org.springframework.web.bind.annotation.RequestParam;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> javax.imageio.ImageIO;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletRequest;</span><br><span class="line"><span class="keyword">import</span> javax.servlet.http.HttpServletResponse;</span><br><span class="line"><span class="keyword">import</span> java.awt.*;</span><br><span class="line"><span class="keyword">import</span> java.awt.image.BufferedImage;</span><br><span class="line"><span class="keyword">import</span> java.io.IOException;</span><br><span class="line"><span class="keyword">import</span> java.io.InputStream;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> Jason Gong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@website</span> https://qingling.icu</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/8/29</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 使用qrcode生成二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Controller</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">GithubQrCodeController</span> {</span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 编写请求跳转到使用qrcode生成二维码的页面</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@GetMapping("/qrcode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">toQrCode</span><span class="params">()</span> {</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"github-qrcode"</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 使用qrcode生成黑白二维码</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@PostMapping("/generateWithQrCode")</span></span><br><span class="line"> <span class="keyword">public</span> String <span class="title function_">generateWithQrCode</span><span class="params">(<span class="meta">@RequestParam("url")</span> String url, HttpServletResponse response, HttpServletRequest request)</span> {</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="comment">//生成图片填充二维码</span></span><br><span class="line"> <span class="type">InputStream</span> <span class="variable">inputStream</span> <span class="operator">=</span> request.getPart(<span class="string">"logo"</span>).getInputStream();</span><br><span class="line"> <span class="type">BufferedImage</span> <span class="variable">image</span> <span class="operator">=</span> QrCodeGenWrapper.of(url)</span><br><span class="line"> .setErrorCorrection(ErrorCorrectionLevel.H)<span class="comment">//设置二维码的纠正级别</span></span><br><span class="line"> .setDrawStyle(QrCodeOptions.DrawStyle.IMAGE)<span class="comment">//绘制二维码的时候采用图片填充</span></span><br><span class="line"> .addImg(<span class="number">1</span>, <span class="number">1</span>, inputStream)<span class="comment">//添加图片</span></span><br><span class="line"> .asBufferedImage();</span><br><span class="line"> <span class="comment">//将生成的二维码响应到浏览器</span></span><br><span class="line"> ImageIO.write(image, <span class="string">"png"</span>, response.getOutputStream());</span><br><span class="line"> <span class="comment">//关闭流</span></span><br><span class="line"> inputStream.close();</span><br><span class="line"> } <span class="keyword">catch</span> (Exception e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="literal">null</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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||
|
||
<p><strong>实现的效果</strong></p>
|
||
<p>二维码中的每一个像素点都是上传的图片，生成的速度很慢</p>
|
||
<p><img src="/pictures/image-20230829230843477.png" alt="image-20230829230843477"></p>
|
||
</article><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/%E4%BA%8C%E7%BB%B4%E7%A0%81/">二维码</a></div><div class="post_share"><div class="social-share" data-image="/img/10.png" data-sites="wechat,weibo,qq"></div><link rel="stylesheet" href="/cdn/css/share.min.css" media="print" onload="this.media='all'"><script src="/cdn/js/social-share.min.js" defer></script></div></div><div class="post-reward"><div class="reward-button"><i class="fas fa-qrcode"></i> 打赏</div><div class="reward-main"><ul class="reward-all"><li class="reward-item"><a href="/img/wechat.jpg" target="_blank"><img class="post-qr-code-img" src="/img/wechat.jpg" alt="微信"/></a><div class="post-qr-code-desc">微信</div></li><li class="reward-item"><a href="/img/alipay.jpg" target="_blank"><img class="post-qr-code-img" src="/img/alipay.jpg" alt="支付宝"/></a><div class="post-qr-code-desc">支付宝</div></li></ul></div></div><br/><div id="post-comment"><div class="comment-head"><div class="comment-headline"><i class="far fa-comment-alt fa-fw"></i><span> 评论</span></div></div><div class="comment-wrap"><div><div id="gitalk-container"></div></div></div></div></div><div class="aside-content" id="aside-content"><div class="card-widget card-info"><div class="is-center"><div class="avatar-img"><img src="/img/avatar.jpg" onerror="this.onerror=null;this.src='/img/loading.gif'" alt="avatar"/></div><div class="author-info__name">Jason</div><div class="author-info__description">Debug the World！</div></div><div class="card-info-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">60</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">39</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">10</div></a></div><a id="card-info-btn"><i class="fab fa-microsoft"></i><span>Ctrl + D 收藏</span></a><div class="card-info-social-icons is-center"><a class="social-icon" href="https://github.com/JasonsGong" target="_blank" title="Github"><i class="fab fa-github"></i></a><a class="social-icon" href="tencent://AddContact/?fromId=45&fromSubId=1&subcmd=all&uin=2602183349&website=www.oicqzone.com" target="_blank" title="QQ"><i class="fab fa-qq"></i></a><a class="social-icon" href="mailto:2602183349@qq.com" target="_blank" title="Email"><i class="fas fa-envelope-open-text"></i></a><a class="social-icon" href="https://github.com/JasonsGong?tab=repositories" target="_blank" title="代码仓库"><i class="fas fa-database"></i></a></div></div><div class="card-widget card-announcement"><div class="item-headline"><i class="fas fa-bullhorn fa-shake"></i><span>公告</span></div><div class="announcement_content">本网站是静态网站,更新页面资源请使用Ctrl+F5;若网站内文章对你有帮助,请使用Ctrl+D收藏该网站！</div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>目录</span><span class="toc-percentage"></span></div><div class="toc-content is-expand"><ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#%E4%B8%80-%E8%B0%B7%E6%AD%8Czxing%E5%BC%80%E6%BA%90%E5%BA%93%E7%94%9F%E6%88%90%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">一.谷歌zxing开源库生成二维码</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#1-%E5%88%9B%E5%BB%BA%E4%B8%80%E4%B8%AAsprinBoot%E9%A1%B9%E7%9B%AE"><span class="toc-text">1.创建一个sprinBoot项目</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#2-%E5%BC%95%E5%85%A5%E7%9B%B8%E5%85%B3%E7%9A%84%E4%BE%9D%E8%B5%96"><span class="toc-text">2.引入相关的依赖</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#3-%E5%9C%A8templates%E7%9B%AE%E5%BD%95%E4%B8%8B%E6%96%B0%E5%BB%BAindex-html%E6%96%87%E4%BB%B6"><span class="toc-text">3.在templates目录下新建index.html文件</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#4-%E7%BC%96%E5%86%99controller%E8%B7%B3%E8%BD%AC%E5%88%B0%E8%AF%A5%E9%A1%B5%E9%9D%A2%EF%BC%8C%E5%AE%8C%E6%88%90%E5%90%8E%E9%87%8D%E5%90%AF%E9%A1%B9%E7%9B%AE%EF%BC%8C%E8%AE%BF%E9%97%AElocalhost-8080-%E6%B5%8B%E8%AF%95"><span class="toc-text">4.编写controller跳转到该页面，完成后重启项目，访问localhost:8080 测试</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#5-%E6%89%93%E5%BC%80index-html%EF%BC%8C%E7%BC%96%E5%86%99%E5%89%8D%E7%AB%AF%E9%A1%B5%E9%9D%A2"><span class="toc-text">5.打开index.html，编写前端页面</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#6-%E5%90%8E%E7%AB%AF%E4%BB%A3%E7%A0%81%E7%9A%84%E7%BC%96%E5%86%99"><span class="toc-text">6.后端代码的编写</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#7-%E6%B5%8B%E8%AF%95%E7%94%9F%E6%88%90%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">7.测试生成二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#8-%E7%94%9F%E6%88%90%E4%B8%80%E4%B8%AA%E5%B8%A6Logo%E7%9A%84%E9%BB%91%E7%99%BD%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">8.生成一个带Logo的黑白二维码</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#%E4%BA%8C-github%E5%BC%80%E6%BA%90%E9%A1%B9%E7%9B%AEqrcode%E7%94%9F%E6%88%90%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">二.github开源项目qrcode生成二维码</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#1-%E5%BC%95%E5%85%A5%E4%BE%9D%E8%B5%96%E6%96%87%E4%BB%B6"><span class="toc-text">1.引入依赖文件</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#2-%E7%94%9F%E6%88%90%E9%BB%91%E7%99%BD%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">2.生成黑白二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#3-%E7%94%9F%E6%88%90%E5%B8%A6%E6%9C%89logo%E7%9A%84%E9%BB%91%E7%99%BD%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">3.生成带有logo的黑白二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#4-%E7%94%9F%E6%88%90%E5%BD%A9%E8%89%B2%E7%9A%84%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">4.生成彩色的二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#5-%E7%94%9F%E6%88%90%E5%B8%A6%E6%9C%89%E8%83%8C%E6%99%AF%E5%9B%BE%E7%9A%84%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">5.生成带有背景图的二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#6-%E7%94%9F%E6%88%90%E7%89%B9%E6%AE%8A%E5%BD%A2%E7%8A%B6%E7%9A%84%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">6.生成特殊形状的二维码</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#7-%E7%94%9F%E6%88%90%E5%9B%BE%E7%89%87%E5%A1%AB%E5%85%85%E4%BA%8C%E7%BB%B4%E7%A0%81"><span class="toc-text">7.生成图片填充二维码</span></a></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最近更新</span></div><div class="aside-list"><div class="aside-list-item"><a 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