<%@ page contentType="text/html;charset=utf-8"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib prefix="sino" tagdir="/WEB-INF/tags"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<c:set var="ctx" value="${pageContext.request.contextPath}" />
<!--弹出窗口,人员树必要-->
<link href="${ctx}/static/lib/jquery-easyui/themes/default/easyui.css" rel="external nofollow" rel="external nofollow" 
 type="text/css" rel="stylesheet" />
<script src="/UploadFiles/2021-04-02/jquery.easyui.min.js">

下面再来看看java后台是如何来查找这个树的，附上后台代码


//选择评估人-树形结构
 @RequestMapping(value = "chooseAssessorTree")//这里不要指定请求方式
 public void chooseAssessorTree(HttpServletRequest req,HttpServletResponse res){
   //每次点击节点的时候会传入一个节点ID值<br data-filtered="filtered">　　　　　 String id = req.getParameter("id");
   //第一次加载树时选择的区域
   String groupId = req.getParameter("groupId");
   List<Map<String,Object list=userService.queryJSAssessor(id,groupId);
   BuildJSON.printToClient(req, res, arrayBuilder(list));
 }
 //获得树值
 private JSONArray arrayBuilder(List<Map<String,Object list) {
  JSONArray arr = new JSONArray();
  if (list != null && list.size() > 0) {
   for (int i=0;i<list.size();i++) {
    JSONObject obj = new JSONObject();
    Map map=list.get(i);
    String userImg=map.get("userImg").toString();
    if (userImg.equals("1")) {//表示到了叶子节点，选择出人
     obj.put("id", map.get("loginName"));
     obj.put("text", map.get("displayName"));
     obj.put("state", "open");
     //obj.put("iconCls", "icon-user2-gj");
    }else{
     obj.put("id", map.get("groupId"));
     obj.put("text", map.get("groupName"));
     obj.put("state", "closed");
    }
    arr.add(obj);
   }
  }
  return arr;
 }


dao查询方法


/**查询树结构的人员以及部门数据
  * @param parentGroupId
  * @param groupId 第一次加载树查询的 区域 例如是成都分公司，则查询出成都分公司下面的部门以及人员
  * @return
  */
 List<Map<String, Object queryJSAssessor(@Param("parentGroupId") String parentGroupId, @Param("groupId")String groupId);　　


对应的xml


<select id="queryJSAssessor" resultType="Map" parameterType="String">
  SELECT
    e.loginName,
    e.displayName,
    e.groupId,
    e.groupCode,
    e.groupName,
    e.disOrder,
    e.userImg
    FROM
    (SELECT s.loginName,s.displayName,s.groupId,s.groupCode,s.groupName,s.disOrder,s.userImg FROM
     (SELECT '0' loginName,
       '0' displayName,
      fg.ID groupId,
      fg.CODE groupCode,
      fg.NAME groupName,
      fg.DISPLAY_ORDER disOrder,
      isnull((select count(id) FROM FND_GROUP where PARENT_ID=fg.ID),0) groupLeaf,
      (select COUNT(1) from FND_USER_GROUP fug, FND_USER fu where fug.USER_ID = fu.ID and fug.GROUP_ID = fg.ID) userLeaf,
      0 userImg
     FROM FND_GROUP fg
     WHERE fg.ENABLE_FLAG = 'Y'
     <if test="parentGroupId != null and '' != parentGroupId">
      AND fg.PARENT_ID = #{parentGroupId}
     </if>
      <if test="parentGroupId == null or '' == parentGroupId">
       <if test="groupId!=null and '' !=groupId">
        AND fg.PARENT_ID = #{groupId}
       </if>
       <if test="groupId==null or ''==groupId">
       AND fg.GROUP_LEVEL = 0
       </if>
      </if>
      )s WHERE s.groupLeaf>0 OR s.userLeaf>0
   UNION ALL 
     SELECT fu.LOGIN_NAME loginName,
       fu.DISPLAY_NAME displayName,
       fg.ID groupId,
      fg.CODE groupCode,
      fg.NAME groupName,
      fg.DISPLAY_ORDER disOrder,
      1 userImg
    FROM FND_USER fu 
    LEFT JOIN FND_USER_GROUP fug ON fu.ID=fug.USER_ID
    LEFT JOIN FND_GROUP fg ON fug.GROUP_ID=fg.ID
     WHERE fu.ENABLE_FLAG = 'Y'
      AND fug.PRIMARY_FLAG='Y'
     AND fg.NAME!=''
     AND fu.LOGIN_NAME!=''
     AND fu.DISPLAY_NAME!=''
     AND fu.MOBILE!=''
     <if test="parentGroupId != null and '' != parentGroupId">
      AND fug.GROUP_ID = #{parentGroupId}
     </if>
     <if test="parentGroupId == null or '' == parentGroupId">
       <if test="groupId!=null and '' !=groupId">
        AND fug.GROUP_ID = #{groupId}
       </if>
       <if test="groupId==null or ''==groupId">
       AND fg.GROUP_LEVEL = 0
       </if>
      </if>
      )e
   ORDER BY userImg, CAST(disOrder AS int)
 </select>


最后再附上一个使用实例的 jsp


<%--
 Created by IntelliJ IDEA.
 User: zht
 Date: 2017/7/18
 Time: 20:36
 To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=utf-8" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib prefix="sino" tagdir="/WEB-INF/tags" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<c:set var="ctx" value="${pageContext.request.contextPath}"/>
<!DOCTYPE html>
<html>
<head>
 <title>专项评估 > 任务分发</title>
 <script src="/UploadFiles/2021-04-02/commonDialog.js">

总结
以上所述是小编给大家介绍的EasyUI创建人员树的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！