Java easyui树形表格TreeGrid的实现代码

自己搞了一下午，终于用JAVA实现了数据网格。记录一下实现的代码。（PS：此处的easyui是1.5版本，楼主只贴了核心的代码）

实现图

JSP页面

//权限列表
$( document ).ready(function(){
      var parentId = 0;
      $('#tt').treegrid({  
 url:'queryPrivilege.action?parentId='+parentId,  
 idField:'id',  
 treeField:'RecordStatus',
 columns:[[  
   {title:'id',field:'id',width:180}, 
   {field:'RecordStatus',title:'RecordStatus',width:180} ,
   {field:'PrivilegeOperation',title:'PrivilegeOperation',width:180}  
 ]],
 onBeforeExpand:function(row){
   //动态设置展开查询的url
   $(this).treegrid('options').url = 'queryPrivilege.action?parentId='+row.id;  
 }
      }); 
    })
 
 
 

 

ACTION层代码

  //输出
    public PrintWriter out()throws IOException{
      HttpServletResponse response=ServletActionContext.getResponse(); 
      response.setContentType("text/html"); 
      response.setContentType("text/plain; charset=utf-8");
      PrintWriter out= response.getWriter();
      return out;
    }  
  public String queryPrivilege() throws IOException{
    returnpd="ok";
    JSonArray array =new JSonArray();    
    array = privilegeService.getMenu(parentId);
    String str=array.toString();
    out().print(str);
    out().flush();
    out().close();
    return returnpd;
  }

Service层接口代码

JSonArray getMenu(int parentId);

ServiceImpl层代码（实现service层）

@Override
  public JSonArray getMenu(int parentId) {
    // TODO Auto-generated method stub
    return (JSONArray)privilegeDao.getMenu(parentId);
  }

Dao层代码

JSonArray getMenu(int parentId);

DaoImpl层代码（实现Dao层）

  @Override
  public JSonArray getMenu(int parentId) {
    // TODO Auto-generated method stub
    String hql="";
    JSonArray array=new JSonArray();
    hql="FROM Privilege p WHERe p.parentID = "+parentId;
    for(Privilege privilege:(List)(getSession().createQuery(hql).list())){
      JSonObject jo=new JSonObject();
      jo.put("id", privilege.getId());
      jo.put("RecordStatus", privilege.getRecordStatus());
      jo.put("parendId",privilege.getParentID());
if(privilege.getParentID()==0){
   jo.put("state","closed"); 
 }
 else{
   jo.put("state","open");
   System.out.println(parentId);
 }
      array.add(jo);
    }
    return array;
  }

数据库一览

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。