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<h2 id="一-树形显示-树形控件"><a href="#一-树形显示-树形控件" class="headerlink" title="一.树形显示-树形控件"></a>一.树形显示-树形控件</h2><h3 id="1-树形显示"><a href="#1-树形显示" class="headerlink" title="1.树形显示"></a>1.树形显示</h3><p><strong>示例-以谷粒商城项目的商品分类为例</strong></p>
<p><strong>数据中商品分类的数据表,所有的分类数据在同一张表中</strong></p>
<img src="/pictures/image-20230530174911409.png" alt="image-20230530174911409" style="zoom:150%;" />
<p><strong>商品分类的实体类</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><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.atguigu.gulimall.product.entity;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.annotation.TableField;</span><br><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.annotation.TableId;</span><br><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.annotation.TableName;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.io.Serializable;</span><br><span class="line"><span class="keyword">import</span> java.util.Date;</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="keyword">import</span> lombok.Data;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 商品三级分类</span></span><br><span class="line"><span class="comment"> * </span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> JasonGong</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@email</span> JasonGong@gmail.com</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@date</span> 2023-05-19 00:23:36</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">@TableName(&quot;pms_category&quot;)</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">CategoryEntity</span> <span class="keyword">implements</span> <span class="title class_">Serializable</span> &#123;</span><br><span cl
<p><strong>封装数据,供前端显示</strong></p>
<p>controller层</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></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 查询所有的分类以及子分类,以树形结构组装起来</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@RequestMapping(&quot;/list/tree&quot;)</span></span><br><span class="line"><span class="keyword">public</span> R <span class="title function_">list</span><span class="params">()</span>&#123;</span><br><span class="line"> List&lt;CategoryEntity&gt; entities = categoryService.listWithTree();</span><br><span class="line"> <span class="keyword">return</span> R.ok().put(<span class="string">&quot;data&quot;</span>, entities);</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>service层这里主要有一个单独的递归方法使用的时候会改就行</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></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 查询所有分类,以树形结构显示</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> List&lt;CategoryEntity&gt; <span class="title function_">listWithTree</span><span class="params">()</span> &#123;</span><br><span class="line"> <span class="comment">//查出所有的分类</span></span><br><span class="line"> List&lt;CategoryEntity&gt; entities = categoryDao.selectList(<span class="literal">null</span>);</span><br><span class="line"> <span class="comment">//组装成父子的树形结构</span></span><br><span class="line"> <span class="comment">//找到所有的一级分类</span></span><br><span class="line"> List&lt;CategoryEntity&gt; level1List = entities.stream().filter(categoryEntity -&gt;</span><br><span class="line"> <span class="comment">//父级分类的id等于0的就是一级分类</span></span><br><span class="line"> categoryEntity.getParentCid() == <span class="number">0</span></span><br><span class="line"> ).map((menu) -&gt; &#123;</span><br><span class="line"> <span class="comment">//为当前分类的子分类赋值</span></span><br><span class="line"> menu.setChildren(getChildren(menu, entities));</span><br><span class="line"> <span class="keyword">return</span> menu;</span><br><span class="line"> &#125;).sorted((menu1, menu2) -&gt; &#123;</span><br><span class="line"> <span class="comment">//排序</span></span><br><span class="line"> <span class="keyword">return</span> (menu1.getSort() == <span class="literal">null</span> ? <span class="number">0</span> : menu1.getSort()) - (menu2.getSort() == <span class="literal">null</span> ? <span class="number">0</span> : menu2.getSort());</span><br><span class="line"> &#125;).collect(Collectors.toList());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> level1List;</span><br><span class="line"> &#125;</span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 递归查询所有菜单的子菜单</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> root 当前分类</spa
<p><strong>返回数据的格式</strong></p>
<figure class="highlight json"><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><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class=
<p><strong>前端代码</strong></p>
<p>模板</p>
<figure class="highlight plaintext"><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></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line"> &lt;div&gt;</span><br><span class="line"> &lt;!-- 树形控件 --&gt;</span><br><span class="line"> &lt;el-tree</span><br><span class="line"> :data=&quot;menus&quot;</span><br><span class="line"> :props=&quot;defaultProps&quot;</span><br><span class="line"> @node-click=&quot;handleNodeClick&quot;</span><br><span class="line"> &gt;&lt;/el-tree&gt;</span><br><span class="line"> &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line"> export default &#123;</span><br><span class="line"> data() &#123;</span><br><span class="line"> return &#123;</span><br><span class="line"> data: [],//发送请求获取的数据(比如 return R.ok().put(&quot;data&quot;, entities);里面的data)</span><br><span class="line"> defaultProps: &#123;</span><br><span class="line"> children: &#x27;children&#x27;,//实体类中的属性(比如:private List&lt;CategoryEntity&gt; children;)</span><br><span class="line"> label: &#x27;label&#x27;//需要显示的属性的属性名(比如商品分类名属性名是name,这里就填name)</span><br><span class="line"> &#125;</span><br><span class="line"> &#125;;</span><br><span class="line"> &#125;,</span><br><span class="line"> methods: &#123;</span><br><span class="line"> handleNodeClick(data) &#123;</span><br><span class="line"> console.log(data);</span><br><span class="line"> &#125;</span><br><span class="line"> &#125;</span><br><span class="line"> &#125;;</span><br><span class="line">&lt;/script&gt;</span><br></pre></td></tr></table></figure>
<p>完整代码</p>
<figure class="highlight plaintext"><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></pre></td><td class="code"><pre><span class="line">&lt;template&gt;</span><br><span class="line"> &lt;div&gt;</span><br><span class="line"> &lt;!-- 树形控件 --&gt;</span><br><span class="line"> &lt;el-tree</span><br><span class="line"> :data=&quot;menus&quot;</span><br><span class="line"> :props=&quot;defaultProps&quot;</span><br><span class="line"> @node-click=&quot;handleNodeClick&quot;</span><br><span class="line"> &gt;&lt;/el-tree&gt;</span><br><span class="line"> &lt;/div&gt;</span><br><span class="line">&lt;/template&gt;</span><br><span class="line"></span><br><span class="line">&lt;script&gt;</span><br><span class="line">export default &#123;</span><br><span class="line"> //定义变量</span><br><span class="line"> data() &#123;</span><br><span class="line"> return &#123;</span><br><span class="line"> menus: [],</span><br><span class="line"> defaultProps: &#123;//这里的配置看官方的文档</span><br><span class="line"> children: &quot;children&quot;,//父节点上的子节点</span><br><span class="line"> label: &quot;name&quot;,//每个对象要显示的属性值,比如我们当前要显示商品分类中的分类名的值这里就改成name</span><br><span class="line"> &#125;,</span><br><span class="line"> &#125;;</span><br><span class="line"> &#125;,</span><br><span class="line"> //钩子函数</span><br><span class="line"> created() &#123;</span><br><span class="line"> //调用获取商品分类数据的方法</span><br><span class="line"> this.getMenus();</span><br><span class="line"> &#125;,</span><br><span class="line"></span><br><span class="line"> //方法</span><br><span class="line"> methods: &#123;</span><br><span class="line"> handleNodeClick(data) &#123;</span><br><span class="line"> console.log(data);</span><br><span class="line"> &#125;,</span><br><span class="line"> //获取所有的菜单</span><br><span class="line"> getMenus() &#123;</span><br><span class="line"> this.$http(&#123;</span><br><span class="line"> url: this.$http.adornUrl(&quot;/product/category/list/tree&quot;),</span><br><span class="line"> method: &quot;get&quot;,</span><br><span class="line"> &#125;).then((&#123; data &#125;) =&gt; &#123;</span><br><span class="line"> this.menus = data.data;</span><br><span class="line"> &#125;);</span><br><span class="line"> &#125;,</span><br><span
<p><strong>显示效果</strong></p>
<img src="/pictures/image-20230530181102832.png" alt="image-20230530181102832" style="zoom:150%;" />
<h3 id="2-树形控件的删除、添加"><a href="#2-树形控件的删除、添加" class="headerlink" title="2.树形控件的删除、添加"></a>2.树形控件的删除、添加</h3><p>页面的显示效果</p>
<p><img src="/pictures/image-20230605145343384.png" alt="image-20230605145343384"></p>
<p>使用的组件 在树形控件的基础上添加相关的代码</p>
<img src="/pictures/image-20230605145433594.png" alt="image-20230605145433594" style="zoom:150%;" />
<p>添加的时候弹出的对话框使用的组件</p>
<img src="/pictures/image-20230605153935967.png" alt="image-20230605153935967" style="zoom:150%;" />
<img src="/pictures/image-20230605154629290.png" alt="image-20230605154629290" style="zoom:150%;" />
<p><strong>前端代码的实现</strong></p>
<p>Tips删除成功之后依然展开删除的节点</p>
<p>删除和添加的前端代码</p>
<figure class="highlight plaintext"><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><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span c
<p><strong>后端代码</strong></p>
<p>删除的后端代码</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></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 删除</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@RequestMapping(&quot;/delete&quot;)</span></span><br><span class="line"> <span class="comment">//@RequiresPermissions(&quot;product:category:delete&quot;)</span></span><br><span class="line"> <span class="keyword">public</span> R <span class="title function_">delete</span><span class="params">(<span class="meta">@RequestBody</span> Long[] catIds)</span> &#123;</span><br><span class="line"> <span class="comment">//检查当前删除的菜单,是否被别的地方引用</span></span><br><span class="line"> <span class="comment">//categoryService.removeByIds(Arrays.asList(catIds));</span></span><br><span class="line"> categoryService.removeMenuByIds(Arrays.asList(catIds));</span><br><span class="line"> <span class="keyword">return</span> R.ok();</span><br><span class="line"> &#125;</span><br></pre></td></tr></table></figure>
<p>添加的后端代码</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></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 保存</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@RequestMapping(&quot;/save&quot;)</span></span><br><span class="line"><span class="comment">//@RequiresPermissions(&quot;product:category:save&quot;)</span></span><br><span class="line"><span class="keyword">public</span> R <span class="title function_">save</span><span class="params">(<span class="meta">@RequestBody</span> CategoryEntity category)</span> &#123;</span><br><span class="line"> categoryService.save(category);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> R.ok();</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<p>实现的效果</p>
<p><img src="/pictures/image-20230605163004850.png" alt="image-20230605163004850"></p>
2023-12-09 18:13:52 +08:00
</article><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/%E5%89%8D%E7%AB%AF/">前端</a></div><div class="post_share"><div class="social-share" data-image="/img/4.png" data-sites="wechat,weibo,qq"></div><link rel="stylesheet" href="https://fastly.jsdelivr.net/npm/butterfly-extsrc/sharejs/dist/css/share.min.css" media="print" onload="this.media='all'"><script src="https://fastly.jsdelivr.net/npm/butterfly-extsrc/sharejs/dist/js/social-share.min.js" defer></script></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">73</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">43</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">8</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&amp;fromSubId=1&amp;subcmd=all&amp;uin=2602183349&amp;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://gitee.com/JasonsGong/jasonsgong" 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-%E6%A0%91%E5%BD%A2%E6%98%BE%E7%A4%BA-%E6%A0%91%E5%BD%A2%E6%8E%A7%E4%BB%B6"><span class="toc-text">一.树形显示-树形控件</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#1-%E6%A0%91%E5%BD%A2%E6%98%BE%E7%A4%BA"><span class="toc-text">1.树形显示</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#2-%E6%A0%91%E5%BD%A2%E6%8E%A7%E4%BB%B6%E7%9A%84%E5%88%A0%E9%99%A4%E3%80%81%E6%B7%BB%E5%8A%A0"><span class="toc-text">2.树形控件的删除、添加</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/64695.html" title="项目实战-黑马头条"><img src="/img/4.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="项目实战-黑马头条"/></a><div class="content"><a class="title" href="/posts/64695.html" title="项目实战-黑马头条">项目实战-黑马头条</a><time datetime="2023-12-09T10:12:38.117Z" title="更新于 2023-12-09 18:12:38">2023-12-09</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/posts/24183.html" title="任务进度"><img src="/img/3.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="任务进度"/></a><div class="content"><a class="title" href="/posts/24183.html" title="任务进度">任务进度</a><time datetime="2023-12-09T09:21:14.149Z" title="更新于 2023-12-09 17:21:14">
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