在第一篇的基础上更改，在实际项目中的使用。

一：HTML 代码：

             
     
                  
       
                        
发送给谁：
                        
         
                   
                 
     

二：action代码：

/**     * 点击树节点请求此接口     * @param id  :Department的ID     * @param response     * @param model     * @throws Exception     */    @RequestMapping(value="/threeLesson/ztreeAjax",method=RequestMethod.POST)    public void ztreeTestpost(String id,HttpServletRequest request,HttpServletResponse response,ModelMap model) throws Exception{        request.setCharacterEncoding("gb2312");         response.setContentType("text/html;charset=utf-8");            //查找组织下的用户        List
     
       userList=userService.getUserListByOrganizationId(Long.valueOf(id));        //获取部门        List
      
        departmentList=departmentService.getDepartmentByParentId(Long.valueOf(id));        StringBuffer strbuf=new StringBuffer("[");        if (departmentList.size()>0) {            for (int i = 0; i < departmentList.size(); i++) {                strbuf.append("{\"id\":"+departmentList.get(i).getId()+",\"pId\":"+departmentList.get(i).getParentId()+",\"name\":\"" +departmentList.get(i).getName()+"\",isParent:true},");            }        }        if (userList.size()>0) {            for (int i = 0; i < userList.size(); i++) {                String uid="u"+Long.toString(userList.get(i).getId()); // 加U区分用户ID和组织ID                strbuf.append("{\"id\":\""+uid+"\",\"pId\":"+userList.get(i).getOrganizationId()+",\"name\":\"" +userList.get(i).getName()+"\"},");                                }        }                                String ss=strbuf.toString();        ss=ss.substring(0, ss.length()-1);        ss=ss+"]";        PrintWriter pw = response.getWriter();         pw.write(ss);        }