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<meta property="og:description" content="1.EasyExcel介绍 Java解析、生成Excel比较有名的框架有Apache poi、jxl。但他们都存在一个严重的问题就是非常的耗内存，poi有一套SAX模式的API可以一定程度的解决一些内存溢出的问题，但POI还是有一些缺陷，比如07版Excel解压缩以及解压后存储都是在内存中完成的，内存消耗依然很大。easyexcel重写了poi对07版Excel的解析，一个3M的e">
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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">SpringBoot整合EasyExcel</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="2023-04-14T03:28:27.000Z" title="发表于 2023-04-14 11:28:27">2023-04-14</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="2023-09-11T23:36:50.000Z" title="更新于 2023-09-12 07:36:50">2023-09-12</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">1k</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>4分钟</span></span><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="SpringBoot整合EasyExcel"><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"><h2 id="1-EasyExcel介绍"><a href="#1-EasyExcel介绍" class="headerlink" title="1.EasyExcel介绍"></a>1.EasyExcel介绍</h2><p> Java解析、生成Excel比较有名的框架有Apache poi、jxl。但他们都存在一个严重的问题就是非常的耗内存，poi有一套SAX模式的API可以一定程度的解决一些内存溢出的问题，但POI还是有一些缺陷，比如07版Excel解压缩以及解压后存储都是在内存中完成的，内存消耗依然很大。easyexcel重写了poi对07版Excel的解析，一个3M的excel用POI sax解析依然需要100M左右内存，改用easyexcel可以降低到几M，并且再大的excel也不会出现内存溢出；03版依赖POI的sax模式，在上层做了模型转换的封装，让使用者更加简单方便</p>
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<p>官网地址：<a target="_blank" rel="noopener" href="https://easyexcel.opensource.alibaba.com/">https://easyexcel.opensource.alibaba.com/</a></p>
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<h2 id="2-入门"><a href="#2-入门" class="headerlink" title="2.入门"></a>2.入门</h2><h3 id="2-1-引入依赖"><a href="#2-1-引入依赖" class="headerlink" title="2.1 引入依赖"></a>2.1 引入依赖</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></pre></td><td class="code"><pre><span class="line"><span class="comment"><!-- https://mvnrepository.com/artifact/com.alibaba/easyexcel --></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>com.alibaba<span class="tag"></<span class="name">groupId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">artifactId</span>></span>easyexcel<span class="tag"></<span class="name">artifactId</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">version</span>></span>2.1.1<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="2-2-创建与Excel表格对应的实体类，并在属性上加上注解"><a href="#2-2-创建与Excel表格对应的实体类，并在属性上加上注解" class="headerlink" title="2.2 创建与Excel表格对应的实体类，并在属性上加上注解"></a>2.2 创建与Excel表格对应的实体类，并在属性上加上注解</h3><p>不用自己设置excel表中的表头信息,easyexcel会帮我们设置</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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.annotation.ExcelProperty;</span><br><span class="line"><span class="keyword">import</span> lombok.AllArgsConstructor;</span><br><span class="line"><span class="keyword">import</span> lombok.Data;</span><br><span class="line"><span class="keyword">import</span> lombok.NoArgsConstructor;</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> GongChangjiang</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">@Date</span> 2023/4/14</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 与Excel表格对应的实体类</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Data</span></span><br><span class="line"><span class="meta">@AllArgsConstructor</span></span><br><span class="line"><span class="meta">@NoArgsConstructor</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">UserData</span> {</span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 注解中value 设置的是表头的信息</span></span><br><span class="line"><span class="comment"> * index 设置的是这个属性在excel表格中的索引位置 列索引</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"></span><br><span class="line"> <span class="meta">@ExcelProperty(value = "用户编号", index = 0)</span></span><br><span class="line"> <span class="keyword">private</span> <span class="type">int</span> uid;</span><br><span class="line"></span><br><span class="line"> <span class="meta">@ExcelProperty(value = "用户名称", index = 1)</span></span><br><span class="line"> <span class="keyword">private</span> String username;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<h3 id="2-3-读写操作"><a href="#2-3-读写操作" class="headerlink" title="2.3 读写操作"></a>2.3 读写操作</h3><h4 id="1-写操作"><a href="#1-写操作" class="headerlink" title="1.写操作"></a>1.写操作</h4><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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.util.ArrayList;</span><br><span class="line"><span class="keyword">import</span> java.util.List;</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> GongChangjiang</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">@Date</span> 2023/4/14</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 测试对excel的操作</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">TestEasyExcel</span> {</span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title function_">main</span><span class="params">(String[] args)</span> {</span><br><span class="line"> <span class="comment">//设置excel文件的路径和名称</span></span><br><span class="line"> <span class="type">String</span> <span class="variable">filename</span> <span class="operator">=</span> <span class="string">"C:\\AlYun\\user.xlsx"</span>;</span><br><span class="line"></span><br><span class="line"> <span class="comment">//构建一个数据的list集合,存放要保存在excel表中的数据</span></span><br><span class="line"> List<UserData> userDataList = <span class="keyword">new</span> <span class="title class_">ArrayList</span><>();</span><br><span class="line"> userDataList.add(<span class="keyword">new</span> <span class="title class_">UserData</span>(<span class="number">1</span>,<span class="string">"张三"</span>));</span><br><span class="line"> userDataList.add(<span class="keyword">new</span> <span class="title class_">UserData</span>(<span class="number">2</span>,<span class="string">"李四"</span>));</span><br><span class="line"> userDataList.add(<span class="keyword">new</span> <span class="title class_">UserData</span>(<span class="number">3</span>,<span class="string">"王五"</span>));</span><br><span class="line"> userDataList.add(<span class="keyword">new</span> <span class="title class_">UserData</span>(<span class="number">4</span>,<span class="string">"赵六"</span>));</span><br><span class="line"></span><br><span class="line"> <span class="comment">//调用方法实现写的操作</span></span><br><span class="line"> EasyExcel.write(filename,UserData.class)</span><br><span class="line"> .sheet(<span class="string">"用户信息"</span>)</span><br><span class="line"> .doWrite(userDataList);</span><br><span class="line"> </span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure>
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<p>执行之后,空的excel表中会添加如下的数据</p>
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<p><img src="/pictures/image-20230414131020923.png" alt="image-20230414131020923"></p>
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<h4 id="2-读操作"><a href="#2-读操作" class="headerlink" title="2.读操作"></a>2.读操作</h4><h5 id="1-创建一个读操作的监听器"><a href="#1-创建一个读操作的监听器" class="headerlink" title="1 .创建一个读操作的监听器"></a>1 .创建一个读操作的监听器</h5><p>继承AnalysisEventListener<T> T表示实体类</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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.context.AnalysisContext;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.event.AnalysisEventListener;</span><br><span class="line"></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> GongChangjiang</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">@Date</span> 2023/4/14</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 读操作的监听器</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">ExcelLister</span> <span class="keyword">extends</span> <span class="title class_">AnalysisEventListener</span><UserData> {</span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 一行一行的读取 从第二行开始读取</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">invoke</span><span class="params">(UserData data, AnalysisContext context)</span> {</span><br><span class="line"> <span class="comment">//打印输出读取到的数据</span></span><br><span class="line"> System.out.println(data);</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"> * 读取之后执行</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">doAfterAllAnalysed</span><span class="params">(AnalysisContext context)</span> {</span><br><span class="line"></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"> * 非必须实现的方法</span></span><br><span class="line"><span class="comment"> * 此方法可以读取表头的信息</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">invokeHeadMap</span><span class="params">(Map<Integer, String> headMap, AnalysisContext context)</span> {</span><br><span class="line"> <span class="comment">//打印读取到的表头信息</span></span><br><span class="line"> System.out.println(<span class="string">"表头信息:"</span>+headMap);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<h5 id="5-编写方法测试"><a href="#5-编写方法测试" class="headerlink" title="5.编写方法测试"></a>5.编写方法测试</h5><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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> test;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.EasyExcel;</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> GongChangjiang</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">@Date</span> 2023/4/14</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="keyword">public</span> <span class="keyword">class</span> <span class="title class_">TestReadExcel</span> {</span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title function_">main</span><span class="params">(String[] args)</span> {</span><br><span class="line"> <span class="comment">//设置excel文件的路径和名称</span></span><br><span class="line"> <span class="type">String</span> <span class="variable">filename</span> <span class="operator">=</span> <span class="string">"C:\\AlYun\\user.xlsx"</span>;</span><br><span class="line"> <span class="comment">//调用方法实现读取操作</span></span><br><span class="line"> <span class="comment">//new ExcelLister()自己创建的监听器</span></span><br><span class="line"> EasyExcel.read(filename,UserData.class,<span class="keyword">new</span> <span class="title class_">ExcelLister</span>())</span><br><span class="line"> .sheet()</span><br><span class="line"> .doRead();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<h2 id="3-监听器中实现对数据库的操作"><a href="#3-监听器中实现对数据库的操作" class="headerlink" title="3.监听器中实现对数据库的操作"></a>3.监听器中实现对数据库的操作</h2><p>解决listener中无法操作数据库的问题</p>
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<h3 id="3-1-通过构造器注入的方式"><a href="#3-1-通过构造器注入的方式" class="headerlink" title="3.1 通过构造器注入的方式"></a>3.1 通过构造器注入的方式</h3><p>在进行读操作创建Listener的时候,注入mapper</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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.atguigu.yygh.cmn.listener;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.context.AnalysisContext;</span><br><span class="line"><span class="keyword">import</span> com.alibaba.excel.event.AnalysisEventListener;</span><br><span class="line"><span class="keyword">import</span> com.atguigu.yygh.cmn.mapper.DictMapper;</span><br><span class="line"><span class="keyword">import</span> com.atguigu.yygh.model.cmn.Dict;</span><br><span class="line"><span class="keyword">import</span> com.atguigu.yygh.vo.cmn.DictEeVo;</span><br><span class="line"><span class="keyword">import</span> org.springframework.beans.BeanUtils;</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"> * <span class="doctag">@author</span> GongChangjiang</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">@Date</span> 2023/4/14</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="keyword">public</span> <span class="keyword">class</span> <span class="title class_">DictListener</span> <span class="keyword">extends</span> <span class="title class_">AnalysisEventListener</span><DictEeVo> {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">private</span> DictMapper dictMapper;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">public</span> <span class="title function_">DictListener</span><span class="params">(DictMapper dictMapper)</span> {</span><br><span class="line"> <span class="built_in">this</span>.dictMapper = dictMapper;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">invoke</span><span class="params">(DictEeVo data, AnalysisContext context)</span> {</span><br><span class="line"> <span class="comment">//调用mapper 添加数据</span></span><br><span class="line"> <span class="type">Dict</span> <span class="variable">dict</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="title class_">Dict</span>();</span><br><span class="line"> BeanUtils.copyProperties(data,dict);</span><br><span class="line"> dictMapper.insert(dict);</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">doAfterAllAnalysed</span><span class="params">(AnalysisContext context)</span> {</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure>
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<h3 id="3-2-使用注解加属性注入的方式"><a href="#3-2-使用注解加属性注入的方式" class="headerlink" title="3.2 使用注解加属性注入的方式"></a>3.2 使用注解加属性注入的方式</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></pre></td><td class="code"><pre><span class="line"><span class="meta">@Component</span></span><br><span class="line"> +</span><br><span class="line"><span class="meta">@Autowired</span></span><br></pre></td></tr></table></figure>
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</article><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/SpringBoot/">SpringBoot</a></div><div class="post_share"><div class="social-share" data-image="/img/5.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" 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is-expand"><ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#1-EasyExcel%E4%BB%8B%E7%BB%8D"><span class="toc-text">1.EasyExcel介绍</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#2-%E5%85%A5%E9%97%A8"><span class="toc-text">2.入门</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#2-1-%E5%BC%95%E5%85%A5%E4%BE%9D%E8%B5%96"><span class="toc-text">2.1 引入依赖</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#2-2-%E5%88%9B%E5%BB%BA%E4%B8%8EExcel%E8%A1%A8%E6%A0%BC%E5%AF%B9%E5%BA%94%E7%9A%84%E5%AE%9E%E4%BD%93%E7%B1%BB%EF%BC%8C%E5%B9%B6%E5%9C%A8%E5%B1%9E%E6%80%A7%E4%B8%8A%E5%8A%A0%E4%B8%8A%E6%B3%A8%E8%A7%A3"><span class="toc-text">2.2 创建与Excel表格对应的实体类，并在属性上加上注解</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#2-3-%E8%AF%BB%E5%86%99%E6%93%8D%E4%BD%9C"><span class="toc-text">2.3 读写操作</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#1-%E5%86%99%E6%93%8D%E4%BD%9C"><span class="toc-text">1.写操作</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#2-%E8%AF%BB%E6%93%8D%E4%BD%9C"><span class="toc-text">2.读操作</span></a><ol class="toc-child"><li class="toc-item toc-level-5"><a class="toc-link" href="#1-%E5%88%9B%E5%BB%BA%E4%B8%80%E4%B8%AA%E8%AF%BB%E6%93%8D%E4%BD%9C%E7%9A%84%E7%9B%91%E5%90%AC%E5%99%A8"><span class="toc-text">1 .创建一个读操作的监听器</span></a></li><li class="toc-item toc-level-5"><a class="toc-link" href="#5-%E7%BC%96%E5%86%99%E6%96%B9%E6%B3%95%E6%B5%8B%E8%AF%95"><span class="toc-text">5.编写方法测试</span></a></li></ol></li></ol></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#3-%E7%9B%91%E5%90%AC%E5%99%A8%E4%B8%AD%E5%AE%9E%E7%8E%B0%E5%AF%B9%E6%95%B0%E6%8D%AE%E5%BA%93%E7%9A%84%E6%93%8D%E4%BD%9C"><span class="toc-text">3.监听器中实现对数据库的操作</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#3-1-%E9%80%9A%E8%BF%87%E6%9E%84%E9%80%A0%E5%99%A8%E6%B3%A8%E5%85%A5%E7%9A%84%E6%96%B9%E5%BC%8F"><span class="toc-text">3.1 通过构造器注入的方式</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#3-2-%E4%BD%BF%E7%94%A8%E6%B3%A8%E8%A7%A3%E5%8A%A0%E5%B1%9E%E6%80%A7%E6%B3%A8%E5%85%A5%E7%9A%84%E6%96%B9%E5%BC%8F"><span class="toc-text">3.2 使用注解加属性注入的方式</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 class="thumbnail" href="/posts/8957.html" title="Linux从入门到进阶"><img src="/img/8.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Linux从入门到进阶"/></a><div class="content"><a class="title" href="/posts/8957.html" title="Linux从入门到进阶">Linux从入门到进阶</a><time datetime="2024-05-10T05:31:11.691Z" title="更新于 2024-05-10 13:31:11">2024-05-10</time></div></div><div class="aside-list-item"><a class="thumbnail" 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