easyUI--入门实例

ui框架

1、需要导入的所有jar包，以及外部的类或文件

1.1导入jar包

1.2导入WebContent外部资源

1.3导入所有需要的辅助类--Util包

2.实例代码

2.1创建TreeNode实体类

public class TreeNode {
  private String id;
  private String text;
  private  List<TreeNode> children=new ArrayList<TreeNode>();
  private  Map<String, Object> attributes=new HashMap<String, Object>();

public String getId() {
    return id;
}

public void setId(String id) {
    this.id = id;
}

public String getText() {
    return text;
}

public void setText(String text) {
    this.text = text;
}

public List<TreeNode> getChildren() {
    return children;
}

public void setChildren(List<TreeNode> children) {
    this.children = children;
}

public Map<String, Object> getAttributes() {
    return attributes;
}

public void setAttributes(Map<String, Object> attributes) {
    this.attributes = attributes;
}

@Override
public String toString() {
    return "TreeNode [id=" + id + ", text=" + text + ", children=" + children + ", attributes=" + attributes + "]";
}

}

2.2dao层--MenuDao

 package com.yuan.dao;

 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import com.yuan.entity.TreeNode;
 import com.yuan.util.JsonBaseDao;
 import com.yuan.util.JsonUtils;
 import com.yuan.util.PageBean;
 import com.yuan.util.StringUtils;

 public class MenuDao extends JsonBaseDao {

     /**
      * 给前台tree_data1_json的字符串
      * @param paMap 从前台jsp传递过来的参数集合
      * @param pageBean
      * @return
      * @throws InstantiationException
      * @throws IllegalAccessException
      * @throws SQLException
      */
     public List<TreeNode> listTreeNode(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
        List<Map<String, Object>> listMap = this.listMap(paMap, pageBean);
        List<TreeNode> listTreeNode=new ArrayList<TreeNode>();
        this.listMapToListTreeNode(listMap, listTreeNode);
        return listTreeNode;
     }

     public List<Map<String, Object>> listMap(Map<String, String[]> paMap,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
         String sql="SELECT * FROM t_easyui_menu WHERE TRUE";
         String menuId=JsonUtils.getParamVal(paMap, "Menuid");
         if(StringUtils.isNotBlank(menuId)) {
             sql+=" AND parentid="+menuId;
         }
         else {
             sql+=" AND parentid=-1";
         }

         //这里面存放数据库中的菜单信息
       List<Map<String, Object>> listMap = super.executeQuery(sql, pageBean);
          return listMap;
      }

     /**
      * {'Menuid':001,'Menuame':'学生管理'}
      * {id:..,text:...}
      * @param map
      * @param treeNode
      * @throws InstantiationException
      * @throws IllegalAccessException
      * @throws SQLException
      */
     private void MapToTreeNode(Map<String, Object> map,TreeNode treeNode) throws InstantiationException, IllegalAccessException, SQLException {
         treeNode.setId(map.get("Menuid")+"");
         treeNode.setText(map.get("Menuname")+"");
         treeNode.setAttributes(map);

 //        将子节点添加到父节点当中，建立数据之间的父子关系
 //        treeNode.setChildren(children);
         Map<String, String[]> childrenMap=new HashMap<>();
         childrenMap.put("Menuid", new String[]{treeNode.getId()});
         List<Map<String, Object>> listMap = this.listMap(childrenMap, null);
         List<TreeNode>listTreeNode=new ArrayList<>();
         this.listMapToListTreeNode(listMap, listTreeNode);
         treeNode.setChildren(listTreeNode);
     }

     /**
      * [{'Menuid':001,'Menuame':'学生管理'}，{'Menuid':002,'Menuame':'后勤管理'}]
      * @param listMap
      *       tree_data1_json
      * @param listTreeNode
      * @throws SQLException
      * @throws IllegalAccessException
      * @throws InstantiationException
      */
     private void listMapToListTreeNode (List<Map<String, Object>> listMap,List<TreeNode> listTreeNode) throws InstantiationException, IllegalAccessException, SQLException{
         TreeNode treeNode=null;
         for (Map<String, Object> map : listMap) {
             treeNode=new TreeNode();
             MapToTreeNode(map, treeNode);
             listTreeNode.add(treeNode);
         }

     }

 }

2.3web层--MenuAction

 package com.yuan.web;

 import java.util.List;

 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.yuan.dao.MenuDao;
 import com.yuan.entity.TreeNode;
 import com.yuan.util.ResponseUtil;
 import com.***.framework.ActionSupport;

 public class MenuAction extends ActionSupport{

     private MenuDao menuDao=new MenuDao();

     public String menuTree(HttpServletRequest request,HttpServletResponse response) throws Exception {
         ObjectMapper om=new ObjectMapper();
         //获取到 easyui所识别的json格式
         List<TreeNode> listTreeNode = this.menuDao.listTreeNode(request.getParameterMap(), null);
         ResponseUtil.write(response, om.writeValueAsString(listTreeNode));

          return null;
     }              

 }

2.4 jsp页面代码

 <%@ page language="java" contentType="text/html; charset=UTF-8"
     pageEncoding="UTF-8"%>
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>后台主界面</title>
 <!-- Ctrl+Shift+r -->
 <link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/js/public/easyui5/themes/default/easyui.css">  <!-- 引入easyui样式文件-->
 <link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/js/public/easyui5/themes/icon.css">  <!-- 引入easyui图标样式文件-->
 <script type="text/javascript" src="${pageContext.request.contextPath}/static/js/public/easyui5/jquery.min.js"></script>   <!-- 引入jQuery -->
 <script type="text/javascript" src="${pageContext.request.contextPath}/static/js/public/easyui5/jquery.easyui.min.js"></script>  <!-- 引入easyui-->
 <script type="text/javascript" src="${pageContext.request.contextPath}/static/js/index.js"></script>   

 </head>
 <body class="easyui-layout">
     <div data-options="region:'north',border:false" style="height:60px;background:#B3DFDA;padding:10px">north region</div>
     <div data-options="region:'west',split:true,title:'West'" style="width:150px;padding:10px;">
     <ul id="tt"></ul>
     </div>
     <div data-options="region:'east',split:true,collapsed:true,title:'East'" style="width:100px;padding:10px;">east region</div>
     <div data-options="region:'south',border:false" style="height:50px;background:#A9FACD;padding:10px;">south region</div>
     <div data-options="region:'center',title:'Center'">
     <div id="menuTab" class="easyui-tabs" style="">
     <div title="首页" style="padding:20px;display:none;">
        欢迎界面
     </div>
 </div>
     </div>
 </body>

 </html>

2.5 xml配置

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>easyui01</display-name>
  <filter>
      <filter-name>encodingFiter</filter-name>
      <filter-class>com.yuan.util.EncodingFiter</filter-class>
  </filter>
  <filter-mapping>
      <filter-name>encodingFiter</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>

  <servlet>
      <servlet-name>actionServlet</servlet-name>
      <servlet-class>com.***.framework.ActionServlet</servlet-class>
  </servlet>
  <servlet-mapping>
      <servlet-name>actionServlet</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>

mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>

    <action path="/menuAction" type="com.yuan.web.MenuAction">
    </action>

</config>

2.6数据库信息 （展示部分）

2.7显示结果

谢谢观看^-^ ！！！