easyUI入门

ui框架
easyui=jquery+html4（用来做后台的管理界面）

通过tree加载菜单

需要用到的jar包

实体

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 + "]";
}
  

}

　　MenuDao给前台tree_data1_json的字符串

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 SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
    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";
        }
        //这里面存放的是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 SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
    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);
		}
    }
}

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

　　配置mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<config>
	<!-- <action path="/regAction" type="test.RegAction">
		<forward name="failed" path="/reg.jsp" redirect="false" />
		<forward name="success" path="/login.jsp" redirect="true" />
	</action> -->
	
	<action path="/menuAction" type="com.hmc.web.MenuAction">
	</action>
	<action path="/userAction" type="com.hmc.web.UserAction">
		<forward name="index" path="/index.jsp" redirect="false" />
	</action>
</config>

　　建立jsp进行演示

<%@ 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>
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/js/public/easyui5/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/js/public/easyui5/themes/icon.css">   
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/public/easyui5/jquery.min.js"></script>   
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/public/easyui5/jquery.easyui.min.js"></script>
<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="150px;padding:10px;">
	<ul id="tt"></ul>  
	</div> -->
	<div data-options="region:'east',split:true,collapsed:true,title:'East'" style="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" >   
    <div title="首页" style="padding:20px;display:none;">   
          欢迎界面   
    </div>   
    
</div>  
	
	</div>
</body>

</html>

　　js代码

$(function(){
	$('#tt').tree({    
	    url:'menuAction.action?methodName=menuTree',
	    onClick:function(node){
	    	
	    	var context='<iframe scrolling="no" frameborde="0" src="'+node.attributes.menuURL+'" width="100%" height="100%"></frame>'
	    	if($('#menuTab').tabs('exists',node.text)){
	    		$('#menuTab').tabs('select',node.text);
	    	}else{
	    		$('#menuTab').tabs('add',{    
		    	    title:node.text,    
		    	    content:context,    
		    	    closable:true,    
		    	      
		    	});  
	    	}
	    	

	    }
	    
	});  

})

　　效果图