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<a class="article-title" href="/2019/08/11/easyUI实现下拉列表/">EasyUI实现下拉列表</a>
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<p>部门表的树状下拉框实现<br><img src="https://img-blog.csdnimg.cn/20190726233454701.png" alt="在这里插入图片描述"><br><img src="https://img-blog.csdnimg.cn/20190726232645174.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyMTQ3MA==,size_16,color_FFFFFF,t_70" alt></p>
<figure class="highlight plain"><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">public class DepartmentForTree {</span><br><span class="line"> </span><br><span class="line"> private int id;</span><br><span class="line"> private String text;</span><br><span class="line"> private int pid;</span><br><span class="line"> private List<DepartmentForTree> children </span><br><span class="line"> = new ArrayList<DepartmentForTree>();</span><br><span class="line"> </span><br><span class="line"> public DepartmentForTree() {</span><br><span class="line"> super();</span><br><span class="line"> }</span><br><span class="line"> public DepartmentForTree(int id, String text) {</span><br><span class="line"> super();</span><br><span class="line"> this.id = id;</span><br><span class="line"> this.text = text;</span><br><span class="line"> }</span><br><span class="line"> public DepartmentForTree(int id, String text, int pid) {</span><br><span class="line"> super();</span><br><span class="line"> this.id = id;</span><br><span class="line"> this.text = text;</span><br><span class="line"> this.pid = pid;</span><br><span class="line"> }</span><br><span class="line"> public DepartmentForTree(int id, String text,</span><br><span class="line"> List<DepartmentForTree> children) {</span><br><span class="line"> super();</span><br><span class="line"> this.id = id;</span><br><span class="line"> this.text = text;</span><br><span class="line"> this.children = children;</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> public int getPid() {</span><br><span class="line"> return pid;</span><br><span class="line"> }</span><br><span class="line"> public void setPid(int pid) {</span><br><span class="line"> this.pid = pid;</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> public int getId() {</span><br><span class="line"> return id;</span><br><span class="line"> }</span><br><span class="line"> public void setId(int id) {</span><br><span class="line"> this.id = id;</span><br><span class="line"> }</span><br><span class="line"> public String getText() {</span><br><span class="line"> return text;</span><br><span class="line"> }</span><br><span class="line"> public void setText(String text) {</span><br><span class="line"> this.text = text;</span><br><span class="line"> }</span><br><span class="line"> public List<DepartmentForTree> getChildren() {</span><br><span class="line"> return children;</span><br><span class="line"> }</span><br><span class="line"> public void setChildren(List<DepartmentForTree> children) {</span><br><span class="line"> this.children = children;</span><br><span class="line"> }</span><br><span class="line"> @Override</span><br><span class="line"> public String toString() {</span><br><span class="line"> return "DepartmentForTree [id=" + id + ", text=" + text + ", children="</span><br><span class="line"> + children + "]";</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>service实现方法</p>
<figure class="highlight plain"><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">public class DepartmentImpl implements IDepartmentBiz{</span><br><span class="line"> private DepartmentDao dao = new DepartmentDao();</span><br><span class="line"> public List<DepartmentForTree> queryAllDepartmentsForTree() {</span><br><span class="line"> </span><br><span class="line"> String sql = "SELECT "</span><br><span class="line"> + " departmentID id , departmentName text "</span><br><span class="line"> + ", parentID pid " //departmentID是二级部门ID parentID是一级部门ID</span><br><span class="line"> + " FROM department order by parentID asc";</span><br><span class="line"> </span><br><span class="line"> List<DepartmentForTree> departments =</span><br><span class="line"> dao.query(sql, DepartmentForTree.class, new Object[]{});</span><br><span class="line"> </span><br><span class="line"> List<DepartmentForTree> ones = new ArrayList<DepartmentForTree>();</span><br><span class="line"> List<DepartmentForTree> twos = new ArrayList<DepartmentForTree>();</span><br><span class="line"> </span><br><span class="line"> for (DepartmentForTree department : departments) {</span><br><span class="line"> if(department.getPid() == 0)</span><br><span class="line"> {</span><br><span class="line"> </span><br><span class="line"> ones.add( department );</span><br><span class="line"> }else</span><br><span class="line"> {</span><br><span class="line"> twos.add( department);</span><br><span class="line"> }</span><br><span class="line"> } </span><br><span class="line"> </span><br><span class="line"> for (DepartmentForTree departmentOne : ones) {</span><br><span class="line"> for (DepartmentForTree departmentTwo : twos) {</span><br><span class="line"> if( departmentOne.getId() ==</span><br><span class="line"> departmentTwo.getPid())</span><br><span class="line"> {</span><br><span class="line"> departmentOne.getChildren()</span><br><span class="line"> .add(departmentTwo);</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"> return ones;</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<p>Servlet实现方法</p>
<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">private void queryAll(HttpServletRequest request,</span><br><span class="line"> HttpServletResponse response) throws IOException {</span><br><span class="line"> List<DepartmentForTree> departments = biz.queryAllDepartmentsForTree();</span><br><span class="line"> departments.add( </span><br><span class="line"> new DepartmentForTree( 0 , "全部" ) );</span><br><span class="line"> String jsonString = JSON.toJSONString(departments);</span><br><span class="line"> PrintWriter out = response.getWriter();</span><br><span class="line"> out.print(jsonString);</span><br><span class="line"> out.flush();</span><br><span class="line"> out.close();</span><br><span class="line"> </span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<p>combotree方法</p>
<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">$(</span><br><span class="line"> function () {</span><br><span class="line"> $("#departmentID").combotree(</span><br><span class="line"> {</span><br><span class="line"> url:'http://localhost:8080/KQSYS/DepartmentController/queryAllDepartmentsForTree',</span><br><span class="line"> height:26,</span><br><span class="line"> width:'150px',</span><br><span class="line"> onBeforeSelect : function(note)</span><br><span class="line"> {</span><br><span class="line"> </span><br><span class="line"> var rows = note.children;</span><br><span class="line"> if(rows.length>0)</span><br><span class="line"> {</span><br><span class="line"> $("#departmentID").treegrid("unselect");</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> ,onSelect:function () {</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><br><span class="line"> </span><br><span class="line"> });</span><br></pre></td></tr></table></figure>
<p>有错误请指正 谢谢。</p>
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<a class="article-title" href="/2019/08/11/mybatis/">Mybatis框架</a>
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<a href="/2019/08/11/mybatis/" class="archive-article-date">
<time datetime="2019-08-11T12:38:10.955Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-08-11</time>
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<p><strong>壹-简介</strong><br>Mybatis是一个优秀的持久层框架，他对jdbc的操作数据库的过程进行封装，使开发者只需要关注SQL本身，而不需要花费经历，去处理jdbc的过程代码（例如注册驱动，创建Connection，创建Statement，手动设置参数，结果集检索等），通过XML或者注解的方式，将要执行的各种statement（statement,preparedStatement.CallableStatement）配置起来，通过JAVA对象和statement中的sql进行映射，生成最终执行的sql语句，最后由mybatis框架执行sql并将结果映射成JAVA对象返回。<br> <strong>贰-流程</strong></p>
<ol>
<li><p>加载全局配置文件(MybatisConfig.xml),这个配置文件中通常是别名设置,拦截器的设置,(当ssm整合后,环境配置与mapper映射文件的注册会转移到spring配置文件中)</p>
</li>
<li><p>xml全局配置文件会产生一个构建者类,叫做xmlconfigBuilder,这个类是用来通过xml配置文件来构建Configuration对象实例的,构建的过程就是解析(MybatisConfig.xml)配置文件调用parse产生configuration对象</p>
</li>
<li><p>随后产生的就是Mybatis的配置类(Configuration),这个类可以作为项目的全局配置对象</p>
</li>
<li><p>接下来便是SqlSessionFactory(会话工厂)的构建者类,(SqlSessionFactoryBuilder),configuration配置对象,就可以调用会话工厂构建者类中的build方法完成对会话工厂对象的构建.</p>
</li>
<li><p>产生SqlSessionFactory(会话工厂),是用来生成会话的接口,有一个实现类(DefaultSqlSessionFactory)这个实现类是真正的会话的工厂类,并且它是单例的.会一直存在到服务器关闭.</p>
</li>
<li><p>通过调用会话工厂的实现类中(DefaultSqlSessionFactory)的openSession()方法完成SqlSession对象的创建.</p>
</li>
<li><p>产生sqlsession,该接口是会话,并且是非线程安全的.每一次对数据库的访问都需要创建一个sqlsession,当得到结果后sqlsession就会被废弃,所以声明周期短.</p>
</li>
<li><p>当然这当中还有一个Excutor执行器接口,这才是内部真正对数据库进行操作的操作者,他才是真正的干事的.</p>
</li>
<li><p>另外就是StatementHandler该类是Statment处理器,封装了对数据库各种操作方法,使用时候,就调用其中的一些方法.</p>
</li>
<li><p>最后就是结果集处理器(ResultSetHandler),这个处理器的作用就是对结果进行处理并返回的.</p>
</li>
</ol>
<p><strong>叁-入门程序</strong></p>
<ul>
<li>导包</li>
</ul>
<ol>
<li>mybatis-3.2.7.jar</li>
<li>数据库驱动包</li>
</ol>
<ul>
<li>建立数据库</li>
</ul>
<figure class="highlight c"><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">CREATE TABLE `t_user` (</span><br><span class="line"> `id` <span class="keyword">int</span>(<span class="number">11</span>) NOT <span class="literal">NULL</span> AUTO_INCREMENT,</span><br><span class="line"> `name` varchar(<span class="number">20</span>) CHARACTER SET utf8 COLLATE utf8_general_ci <span class="literal">NULL</span> DEFAULT <span class="literal">NULL</span>,</span><br><span class="line"> `sex` <span class="keyword">char</span>(<span class="number">1</span>) DEFAULT <span class="literal">NULL</span> COMMENT <span class="string">',</span></span><br><span class="line"> PRIMARY KEY (`id`) USING BTREE</span><br><span class="line">)</span><br></pre></td></tr></table></figure>
<ul>
<li>创建实体类</li>
</ul>
<figure class="highlight c"><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="keyword">private</span> <span class="keyword">int</span> id;</span><br><span class="line"><span class="keyword">private</span> String username;</span><br><span class="line"><span class="keyword">private</span> String sex;</span><br></pre></td></tr></table></figure>
<ul>
<li>db.properties的创建</li>
</ul>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line">jdbc.driver=com.mysql.jdbc.Driver</span><br><span class="line">jdbc.url=jdbc:mysql:<span class="comment">//localhost:3306/mybatis?characterEncoding=utf-8</span></span><br><span class="line">jdbc.username=root</span><br><span class="line">jdbc.password=<span class="number">123456</span></span><br></pre></td></tr></table></figure>
<ul>
<li>创建mybatis - config.xml</li>
</ul>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line"><?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"UTF-8"</span> ?> </span><br><span class="line"><!DOCTYPE configuration PUBLIC <span class="string">"-//mybatis.org//DTD Config 3.0//EN"</span> </span><br><span class="line"> <span class="string">"http://mybatis.org/dtd/mybatis-3-config.dtd"</span>> </span><br><span class="line"> </span><br><span class="line"><configuration></span><br><span class="line"> <properties resource=<span class="string">"db.properties"</span>></properties></span><br><span class="line"> <typeAliases></span><br><span class="line"> <!-- <typeAlias alias=<span class="string">"customer"</span> type=<span class="string">"com.itheima.po.Customer"</span>/>--></span><br><span class="line"> <package name=<span class="string">"com.itheima.po"</span>/></span><br><span class="line"> </typeAliases></span><br><span class="line"> <!-- 和spring整合后 environments配置将废除 --></span><br><span class="line"> <environments <span class="keyword">default</span>=<span class="string">"development"</span>></span><br><span class="line"> <environment id=<span class="string">"development"</span>></span><br><span class="line"> <!-- 使用jdbc事务管理 --></span><br><span class="line"> <transactionManager type=<span class="string">"JDBC"</span>></transactionManager></span><br><span class="line"> <!-- 数据库连接池 --></span><br><span class="line"> <dataSource type=<span class="string">"POOLED"</span>></span><br><span class="line"> <property name=<span class="string">"driver"</span> value=<span class="string">"${jdbc.driver}"</span>/></span><br><span class="line"> <property name=<span class="string">"url"</span> value=<span class="string">"${jdbc.url}"</span>/></span><br><span class="line"> <property name=<span class="string">"username"</span> value=<span class="string">"${jdbc.username}"</span>/></span><br><span class="line"> <property name=<span class="string">"password"</span> value=<span class="string">"${jdbc.password}"</span>/></span><br><span class="line"> <property name=<span class="string">"poolMaximumActiveConnections"</span> value=<span class="string">"10"</span>/></span><br><span class="line"> <property name=<span class="string">"poolMaximumIdleConnections"</span> value=<span class="string">"10"</span>/></span><br><span class="line"> <property name=<span class="string">"poolMaximumCheckoutTime"</span> value=<span class="string">"200000"</span>/></span><br><span class="line"> <property name=<span class="string">"poolTimeToWait"</span> value=<span class="string">"20000"</span>/></span><br><span class="line"> <property name=<span class="string">"poolPingQuery"</span> value=<span class="string">"No"</span>/></span><br><span class="line"> <property name=<span class="string">"poolPingEnabled"</span> value=<span class="string">"false"</span>/></span><br><span class="line"> <property name=<span class="string">"poolPingConnectionsNotUsedFor"</span> value=<span class="string">"0"</span>/></span><br><span class="line"> </dataSource></span><br><span class="line"> </environment></span><br><span class="line"> </environments></span><br><span class="line"> <mappers></span><br><span class="line"> <mapper resource=<span class="string">"../src/Dao/UserMapper.xml"</span> /></span><br><span class="line"> </mappers></span><br><span class="line"></configuration></span><br></pre></td></tr></table></figure>
<ul>
<li>创建log4j.properties（src目录下）</li>
</ul>
<figure class="highlight c"><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"># Global logging configuration </span><br><span class="line">log4j.rootLogger=DEBUG, <span class="built_in">stdout</span> </span><br><span class="line"># MyBatis logging configuration... </span><br><span class="line">#log4j.logger.com.itheima.mapper=DEBUG</span><br><span class="line"># Console output... </span><br><span class="line">log4j.appender.<span class="built_in">stdout</span>=org.apache.log4j.ConsoleAppender </span><br><span class="line">log4j.appender.<span class="built_in">stdout</span>.layout=org.apache.log4j.PatternLayout </span><br><span class="line">log4j.appender.<span class="built_in">stdout</span>.layout.ConversionPattern=%<span class="number">5</span>p [%t] - %m%n</span><br></pre></td></tr></table></figure>
<ul>
<li>配置文件Mapper1.xml（可以统一放在src/sqlMap文件夹下）</li>
</ul>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line"><?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"UTF-8"</span> ?></span><br><span class="line"><!DOCTYPE mapper</span><br><span class="line">PUBLIC <span class="string">"-//mybatis.org//DTD Mapper 3.0//EN"</span></span><br><span class="line"><span class="string">"http://mybatis.org/dtd/mybatis-3-mapper.dtd"</span>></span><br><span class="line"><!-- <span class="keyword">namespace</span>：命名空间，用于隔离sql, </span><br><span class="line">命名空间 user.findUserById</span><br><span class="line">--></span><br><span class="line"><mapper <span class="keyword">namespace</span>=<span class="string">"user"</span>></span><br><span class="line"><!--<span class="keyword">namespace</span>+id用来定位具体的sql parameterType：参数类型 resultType：返回值--></span><br><span class="line"><select id=<span class="string">"findUserById"</span> parameterType=<span class="string">"Integer"</span> resultType=<span class="string">"com.itheima.pojo.User"</span>></span><br><span class="line"> select * from t_user where id=#{id}</span><br><span class="line"></select></span><br><span class="line"></mapper></span><br></pre></td></tr></table></figure>
<ul>
<li>同时，需要在mybatis - config.xml中加入如下信息，表明mapper.xml位置</li>
<li>测试</li>
</ul>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">MybatisTest1</span> {</span></span><br><span class="line"></span><br><span class="line"> @Test</span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">testMybatis</span><span class="params">()</span> throws IOException </span>{</span><br><span class="line"> <span class="comment">//加载核心文件</span></span><br><span class="line"> String resource=<span class="string">"mybatis - config.xml"</span>;</span><br><span class="line"> InputStream resourceAsStream = Resources.getResourceAsStream(resource);</span><br><span class="line"> <span class="comment">//创建sqlSessionFactory</span></span><br><span class="line"> SqlSessionFactory sqlSessionFactory=<span class="keyword">new</span> SqlSessionFactoryBuilder().build(resourceAsStream);</span><br><span class="line"> <span class="comment">//创建sqlSession</span></span><br><span class="line"> SqlSession session=sqlSessionFactory.openSession();</span><br><span class="line"> <span class="comment">//执行sql语句</span></span><br><span class="line"> User user = session.selectOne(<span class="string">"user.findUserById"</span>, <span class="number">1</span>);</span><br><span class="line"> System.out.println(user);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
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<a class="article-title" href="/2019/08/05/spring/">Spring</a>
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<a href="/2019/08/05/spring/" class="archive-article-date">
<time datetime="2019-08-05T15:26:46.430Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-08-05</time>
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<p>Spring的三大核心技术：IOC（控制反转）， DI（依赖注入），AOP（面向切面编程，是面向对象的补充）</p>
<ol>
<li>IOC(自己的理解)<br>启动的时候通过xml或者注解扫描，把配置好的类通过反射实例化，然后不用用户手动创建对象，把创建对象的控制权交给spring容器，效果就像是控制权反转了一样，从用户到spring容器。</li>
<li>DI<br>其实这个就是参数版本的IOC我觉得这两个应该算一个，所有配置的参数都在容器里传递。</li>
<li>AOP<br>运用动态代理的方式，在内存临时生成一个对象，在切点处进行增强操作然后返回原对象。</li>
</ol>
<p><strong>优点</strong><br>（1） 非侵入式设计<br>（2） 方便解耦 简化开发<br>（3） 支持AOP 面向切面<br>（4） 支持声明式事务处理<br>（5） 方便程序测试<br>（6） 方便集成各种优秀框架<br>（7） 降低JAVA EE API的使用难度</p>
<p><strong>入门程序</strong><br>步骤：</p>
<ol>
<li><p>创建web项目</p>
</li>
<li><p>导包 四个核心包一个依赖包</p>
</li>
<li><p>配置文件 </p>
</li>
<li><p>测试</p>
</li>
</ol>
<figure class="highlight c"><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">Public <span class="class"><span class="keyword">class</span> <span class="title">UserService</span>{</span>}</span><br><span class="line">Public <span class="class"><span class="keyword">class</span> <span class="title">UserServlet</span>{</span></span><br><span class="line">UserFactory.getSerice();</span><br><span class="line">}</span><br><span class="line"><bean id=”userService” class=””></span><br><span class="line">Public <span class="keyword">static</span> UserService getService(){</span><br><span class="line">String classValue=”class属性值” </span><br><span class="line">Class class=Class.forName(classValue); 利用反射创建类对象</span><br><span class="line">userServicee service=calss.newInstance();</span><br><span class="line"><span class="keyword">return</span> service;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>Spring三大核心技术 IOC DI AOP ；最基础的概念是bean所有操作都是针对Object ， 在String中的所有文件都可以认为是注册和未注册的bean ， String中所有操作都是针对bean的操作 ， 三大思想的操作对象， 也都是bean！！</p>
<p><strong>IOC（控制反转）:</strong><br>首先理解什么是控制不反转！</p>
<figure class="highlight c"><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">Public inter IPrint {</span><br><span class="line"><span class="function">String <span class="title">printObject</span><span class="params">()</span></span>; </span><br><span class="line">} <span class="comment">//创建一个接口</span></span><br><span class="line">Public <span class="class"><span class="keyword">class</span> <span class="title">UserBean</span> <span class="title">implement</span> <span class="title">IPrint</span>{</span></span><br><span class="line"><span class="function">Public String <span class="title">printObject</span><span class="params">()</span></span>{</span><br><span class="line">System.out.print(“打印对象UserBean：”);</span><br><span class="line">Return “abc”</span><br><span class="line">}</span><br><span class="line">} <span class="comment">//第一个实现类</span></span><br><span class="line">Public <span class="class"><span class="keyword">class</span> <span class="title">MyBean</span> <span class="title">implement</span> <span class="title">IPrint</span>{</span></span><br><span class="line"> <span class="function">Public String <span class="title">printObject</span><span class="params">()</span></span>{</span><br><span class="line"> System.out.print(“打印对象MyBean：”);</span><br><span class="line"> }</span><br><span class="line">} <span class="comment">//第二个实现类</span></span><br></pre></td></tr></table></figure>
<p>打印第一个实现类，客户端代码如下：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">IPrint print=<span class="keyword">new</span> UserBean(); 实例化对象</span><br><span class="line">Print.printObject();</span><br></pre></td></tr></table></figure>
<p>创建实例化对象 然后实现方法<br>然后打印第二个实现类 这时候就需要修改代码 对于正经的系统来说 修改代码不符合开闭原则 又比较麻烦的事 所以就想能不能用配置文件来代替代码的修改 这时候就需要spring的控制反转 对继承了接口IPrint的具体实现类的具体对象的创建 不依赖于调用它的客户端代码 而将控制权交给Spring 这就是控制反转<br>配置xml文件：</p>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line"><?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"UTF-8"</span>?></span><br><span class="line"><beans xmlns=<span class="string">"http://www.springframework.org/schema/beans"</span></span><br><span class="line"> xmlns:xsi=<span class="string">"http://www.w3.org/2001/XMLSchema-instance"</span></span><br><span class="line"> xsi:schemaLocation=<span class="string">"</span></span><br><span class="line"><span class="string"> http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"</span>></span><br><span class="line"></span><br><span class="line"> <bean id=<span class="string">"userBean"</span> class=<span class="string">"testSpring.business.bean.UserBean"</span>></span><br><span class="line"> </bean></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"></beans></span><br></pre></td></tr></table></figure>
<p>测试代码：</p>
<figure class="highlight c"><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">ApplicationContext ctx=<span class="keyword">new</span> ClassPathXmlApplication(“applicationContext.xml”);</span><br><span class="line">IPrint bean=(IPrint)ctx.getBean(“userBean”);</span><br><span class="line">bean.Object();</span><br></pre></td></tr></table></figure>
<p>如果想要打印另一个实现类 只要修改配置文件</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><bean id=<span class="string">"MyBean"</span> class=<span class="string">"testSpring.business.bean.MyBean"</span>></span><br></pre></td></tr></table></figure>
<p><strong>DI（依赖注入）：</strong><br>…谁依赖谁 什么注入 向谁注入</p>
<figure class="highlight c"><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="function">Public class UserBean <span class="title">printObiect</span><span class="params">()</span></span>{</span><br><span class="line"> <span class="function">Public String <span class="title">printObject</span><span class="params">()</span></span>{</span><br><span class="line"> System.out.print(“打印对象UserBean:”);</span><br><span class="line"> Return “abc”;</span><br><span class="line"> }</span><br><span class="line">} <span class="comment">//实现类</span></span><br><span class="line">Publc <span class="class"><span class="keyword">class</span> <span class="title">Print</span>{</span></span><br><span class="line"> Private IPint printBean; <span class="comment">//需要注入的对象 需要打印的bean</span></span><br><span class="line"> Private String name;</span><br><span class="line"> <span class="function">Public <span class="keyword">void</span> <span class="title">print</span><span class="params">()</span></span>{</span><br><span class="line"> System.out.print(“注入的name：”+name);</span><br><span class="line"> This.printBean.printObject();</span><br><span class="line">}</span><br><span class="line"> <span class="function">Public <span class="keyword">void</span> <span class="title">setprintBean</span><span class="params">(IPint printBean)</span></span>{</span><br><span class="line"> This.printBean=printBean;</span><br><span class="line"> }</span><br><span class="line"> <span class="function">Public <span class="keyword">void</span> <span class="title">setname</span><span class="params">(String name)</span></span>{</span><br><span class="line"> This.name=name;</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"> 普通的时用print类的客户端代码</span><br><span class="line"> Print p=<span class="keyword">new</span> Print();</span><br><span class="line"> p.setPrintBean(<span class="keyword">new</span> UserBean());</span><br><span class="line"> print.print();</span><br><span class="line"> 依赖注入客户端代码</span><br><span class="line"> Xml文件如下</span><br><span class="line"> <?xml version=<span class="string">"1.0"</span> encoding=<span class="string">"UTF-8"</span>?></span><br><span class="line"><beans xmlns=<span class="string">"http://www.springframework.org/schema/beans"</span></span><br><span class="line"> xmlns:xsi=<span class="string">"http://www.w3.org/2001/XMLSchema-instance"</span></span><br><span class="line"> xsi:schemaLocation=<span class="string">"</span></span><br><span class="line"><span class="string"> http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"</span>></span><br><span class="line"></span><br><span class="line"> <bean id=<span class="string">"userBean"</span> class=<span class="string">"testSpring.business.bean.UserBean"</span>></span><br><span class="line"> </bean></span><br><span class="line"> <bean id=”printBean” class=”…..Print”></span><br><span class="line"> <property name=”printBean” ref=”userBean”/></span><br><span class="line"> <property name=”name” value=”haha”/></span><br><span class="line"> </bean></span><br><span class="line"></beans></span><br><span class="line"> 客户端代码</span><br><span class="line">ApplicationContext ac=<span class="keyword">new</span> ClassPathXmlApplicationContext(“beans.xml”);</span><br><span class="line">Print bean=ac.getBean(“printBean”);</span><br><span class="line">Bean.print();</span><br></pre></td></tr></table></figure>
<p><strong>AOP（面向切面编程）</strong><br>运用动态代理的方式，在内存临时生成一个对象，在切点处进行增强操作然后返回原对象。<br>连接点：类似于可以被增强的方法<br>切入点：可以被增强的连接点 实际被增强的方法 就是切入点<br>Advice：AOP框架在特定的切入点执行的增强处理 即在定义好的切入点处所即将要执行的程序代码 可以理解将其理解为切入类中俄方法<br>Target Object：代理对象<br>Proxy：将通知应用到目标对象之后 被动态创建的对象<br>Weaving：将切面代码插入到目标对象上 从而生成代理对象的过程</p>
<figure class="highlight c"><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></pre></td><td class="code"><pre><span class="line">@org.aspectj.lang.annotation.Aspect</span><br><span class="line">@Component(<span class="string">"Aspect"</span>)</span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">Aspect</span> {</span></span><br><span class="line"> @Pointcut(<span class="string">"execution(* com.jiang.dao.*.*(..))"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">private</span> <span class="keyword">void</span> <span class="title">myPointCut</span><span class="params">()</span></span>{}</span><br><span class="line"> @Before(<span class="string">"myPointCut()"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">beforeAdvice</span><span class="params">(JoinPoint joinPoint)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> System.out.println(<span class="string">"前置通知：模拟执行权限检查"</span>);</span><br><span class="line"> System.out.println(<span class="string">"被织入的增强处理的目标方法为："</span>+joinPoint.getSignature().getName());</span><br><span class="line"> }</span><br><span class="line"> @AfterReturning(<span class="string">"myPointCut()"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">afterReturningAdvice</span><span class="params">(JoinPoint joinPoint)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> System.out.println(<span class="string">"后置通知：模拟执行日志检查"</span>);</span><br><span class="line"> System.out.println(<span class="string">"被植入的增强处理的目标方法为："</span>+joinPoint.getSignature().getName());</span><br><span class="line"> }</span><br><span class="line"> @Around(<span class="string">"myPointCut()"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">public</span> Object <span class="title">aroundAdvice</span><span class="params">(ProceedingJoinPoint proceedingJoinPoint)</span> throws Throwable </span>{</span><br><span class="line"> System.out.println(<span class="string">"环绕开启"</span>);</span><br><span class="line"> Object obj;</span><br><span class="line"> obj = proceedingJoinPoint.proceed();</span><br><span class="line"> System.out.println(<span class="string">"环绕结束"</span>);</span><br><span class="line"> <span class="keyword">return</span> obj;</span><br><span class="line"> }</span><br><span class="line"> @AfterThrowing(value = <span class="string">"myPointCut()"</span>,throwing = <span class="string">"e"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">afterThrowingAdvice</span><span class="params">(JoinPoint joinPoint ,Throwable e)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> System.out.println(<span class="string">"异常通知："</span>+<span class="string">"出错了"</span>+e.getMessage());</span><br><span class="line"> }</span><br><span class="line"> @After(<span class="string">"myPointCut()"</span>)</span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">afterAdvice</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> System.out.println(<span class="string">"最终通知"</span>);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
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<a class="article-title" href="/2019/08/05/关于json和ajax/">关于使用AJAX</a>
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<time datetime="2019-08-05T14:27:28.069Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-08-05</time>
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<li><p>AJAX通过 HTTP 请求加载远程数据。</p>
</li>
<li><p>AJAX请求适合提交数据并展示后台返回的处理信息的时候。</p>
</li>
<li><p>AJAX可以在不刷新页面的情况下执行数据请求或者提交数据等操作。</p>
<h1 id="AJAX好处"><a href="#AJAX好处" class="headerlink" title="AJAX好处"></a>AJAX好处</h1><p>使用AJAX，用户对Web的体验会更“敏捷”：数据提交页面不会闪屏；页面局部更新速度快； 网络带宽占用低；</p>
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<h1 id="用法"><a href="#用法" class="headerlink" title="用法"></a>用法</h1><p>通常将ajax写于js方法中,定义事件,让元素触发,触发之后就会有数据产生给服务端</p>
<figure class="highlight plain"><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">$.ajax({</span><br><span class="line"> url:' ', //路径</span><br><span class="line"> type:'POST', //请求类型 </span><br><span class="line"> dataType:'json', //传入数据类型</span><br><span class="line"> data: ' ', //传入数据 </span><br><span class="line"> success:function (data) { //括号里的data为返回数据 </span><br><span class="line"></span><br><span class="line"> </span><br><span class="line"> },</span><br><span class="line"> error:function () {</span><br><span class="line"> $.messager.show({</span><br><span class="line"> title:'提示',</span><br><span class="line"> msg:'失败'</span><br><span class="line"> });</span><br><span class="line"> }</span><br><span class="line"> });</span><br></pre></td></tr></table></figure>
<p>因为success 请求成功之后调用。传入返回后的数据，以及包含成功代码的<strong>字符串</strong>。<br>传回来的是字符串 如果传过来的是对象，或者集合类型的参数，这时候就需要用到我们的json解析，来处理返回的数据 ， 我们先来看一下json串的格式：</p>
<figure class="highlight plain"><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><br><span class="line">[{"children":[{"children":[],"id":2,"pid":1,"text":"人事一部"}],"id":1,"pid":0,"text":"人事部"},</span><br><span class="line">{"children":[{"children":[],"id":4,"pid":3,"text":"财务一部"},</span><br><span class="line">{"children":[],"id":5,"pid":3,"text":"财务二部"},</span><br><span class="line">{"children":[],"id":6,"pid":3,"text":"财务三部"}],"id":3,"pid":0,"text":"财务部"},</span><br><span class="line">{"children":[{"children":[],"id":8,"pid":7,"text":"就业一部"},</span><br><span class="line">{"children":[],"id":9,"pid":7,"text":"就业二部"},</span><br><span class="line">{"children":[],"id":10,"pid":7,"text":"就业三部"},</span><br><span class="line">{"children":[],"id":11,"pid":7,"text":"就业四部"}],"id":7,"pid":0,"text":"就业部"},</span><br><span class="line">{"children":[],"id":59,"pid":0,"text":"蒋蒋"}]</span><br></pre></td></tr></table></figure>
<p>不难看出其中的每个{ }里面的内容即为一个对象处理后的字符串<br>可以通过下面的方法把数据解析成json串</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">String stringJSON = JSON.toJSONString(参数);</span><br></pre></td></tr></table></figure>
<p>通过ajax使用json串</p>
<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">$.ajax(</span><br><span class="line"> {</span><br><span class="line"> type:"POST",</span><br><span class="line"> url: "http://localhost:8080/KQSYS/DepartmentController/queryAllDepartmentsForTree",</span><br><span class="line"> dataType: "json" ,</span><br><span class="line"> success : function(data)</span><br><span class="line"> {</span><br><span class="line"> var html="";</span><br><span class="line"> $.each(data , function(index){</span><br><span class="line"> html += "<fieldset><legend style='font-size:17px;font-weight:bold;'>"+data[index].text+"</legend>";</span><br><span class="line"> $.each(data[index].children,function(i){</span><br><span class="line"> html += "<fieldset style = 'width:85%; margin:20px auto;'>";</span><br><span class="line"> html += "<legend style='font-size:17px;font-weight:bold;'>"+data[index].children[i].text+"</legend>";</span><br><span class="line"> html += "<div class='formDiv01 formDiv02'>";</span><br><span class="line"> var tag = 0;</span><br><span class="line"> </span><br><span class="line"> </span><br><span class="line"> eval( "var jsonData = " +attTodayDate );</span><br><span class="line"> $.each(jsonData,function(j){</span><br><span class="line"> if(jsonData[j].twoName == data[index].children[i].text)</span><br><span class="line"> {</span><br><span class="line"> html += "<label>" + jsonData[j].employeeName +"("+jsonData[j].typeName+")"+"&nbsp;&nbsp;&nbsp;</label>"; </span><br><span class="line"> tag ++;</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"> if( tag == 0 )</span><br><span class="line"> {</span><br><span class="line"> html += "<p style='width:200px;margin:10px auto;text-algin:center'>暂无当日数据</p>";</span><br><span class="line"> </span><br><span class="line"> } </span><br><span class="line"> html += "</div></fieldset>";</span><br><span class="line"> });</span><br><span class="line"> if( data[index].children.length == 0 )</span><br><span class="line"> {</span><br><span class="line"> html += "<p style='width:200px;margin:10px auto;text-align:center'>暂无数据</p>";</span><br><span class="line"> }</span><br><span class="line"> html += "</fieldset>";</span><br><span class="line"> }); </span><br><span class="line"> $("#attenInfo").html(html);</span><br><span class="line"> },</span><br><span class="line"> error:function()</span><br><span class="line"> {</span><br><span class="line"> $.messager.alert('提示','加载部门信息失败');</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> );</span><br></pre></td></tr></table></figure>
<p><img src="https://img-blog.csdnimg.cn/2019072700452063.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjUyMTQ3MA==,size_16,color_FFFFFF,t_70" alt="在这里插入图片描述"><br>效果图如上所述，动态插入div 。 循环遍历插入数据。<br>有错误请指出，谢谢您。</p>
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<a class="article-title" href="/2019/07/28/我的第一篇博客文章/">我的第一篇博客文章</a>
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<p>Welcome to <a href="https://hexo.io/" target="_blank" rel="noopener">Hexo</a>! This is your very first post. Check <a href="https://hexo.io/docs/" target="_blank" rel="noopener">documentation</a> for more info. If you get any problems when using Hexo, you can find the answer in <a href="https://hexo.io/docs/troubleshooting.html" target="_blank" rel="noopener">troubleshooting</a> or you can ask me on <a href="https://github.com/hexojs/hexo/issues" target="_blank" rel="noopener">GitHub</a>.</p>
<h2 id="Quick-Start"><a href="#Quick-Start" class="headerlink" title="Quick Start"></a>Quick Start</h2><h3 id="Create-a-new-post"><a href="#Create-a-new-post" class="headerlink" title="Create a new post"></a>Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure>
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<div class="tools-col" q-class="show:isShow,hide:isShow|isFalse" q-on="click:stop(e)">
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<ul style="width: 70%">
<li style="width: 33.333333333333336%" q-on="click: openSlider(e, 'innerArchive')"><a href="javascript:void(0)" q-class="active:innerArchive">所有文章</a></li>
<li style="width: 33.333333333333336%" q-on="click: openSlider(e, 'friends')"><a href="javascript:void(0)" q-class="active:friends">友链</a></li>
<li style="width: 33.333333333333336%" q-on="click: openSlider(e, 'aboutme')"><a href="javascript:void(0)" q-class="active:aboutme">关于我</a></li>
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<section class="tools-section tools-section-all" q-show="innerArchive">
<div class="search-wrap">
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缺失模块。<br/>1、请确保node版本大于6.2<br/>2、在博客根目录（注意不是yilia根目录）执行以下命令：<br/> npm i hexo-generator-json-content --save<br/><br/>
3、在根目录_config.yml里添加配置：
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jsonContent:
meta: false
pages: false
posts:
title: true
date: true
path: true
text: false
raw: false
content: false
slug: false
updated: false
comments: false
link: false
permalink: false
excerpt: false
categories: false
tags: true
</pre>
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</li>
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<section class="tools-section tools-section-me" q-show="aboutme">
<div class="aboutme-wrap" id="js-aboutme">程序猿一枚<br> 还是枚很笨的程序猿 <br> 这个网站只是个人学习笔记，如有错误欢迎指点。</div>
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