easyui(一)

2024-03-17 18:21:58

一.UI框架

easyui=jquery+html4（用来做后台的管理界面）
bootstrap=jquery+html5
layui

二.案例

要求：

通过layout布局
通过tree加载菜单
通过菜单去打开不同的tab页
开始步骤：
导入资料里文件

打开API将内容复制到jsp页面

找到对应的文件路径改成如下

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">
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/easyui5/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/easyui5/themes/icon.css">   
<script type="text/javascript" src="${pageContext.request.contextPath}/static/easyui5/jquery.min.js"></script>   
<script type="text/javascript" src="${pageContext.request.contextPath}/static/easyui5/jquery.easyui.min.js"></script>  
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/index.js"></script>  
<title>后台管理主界面</title>
</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;">
		
		左侧的菜单栏加载区域
		<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="height: 800px;">   
    <div title="首页" style="padding:20px;display:none;">   
        默认首页展示内容    
    </div>   
</div>  
	</div>
</body>
</html>

将util包里面的类导进来

导入树形的结构目录（需与jsp页面同级）

[{
	"id":1,
	"text":"*菜单",
	"children":[{
		"id":11,
		"text":"学生管理",
		"state":"closed",
		"children":[{
			"id":111,
			"text":"特色课程"
		},{
			"id":112,
			"text":"作业提交"
		},{
			"id":113,
			"text":"Company"
		}]
	},{
		"id":12,
		"text":"后勤管理",
		"children":[{
			"id":121,
			"text":"Intel"
		},{
			"id":122,
			"text":"Java",
			"attributes":{
				"p1":"Custom Attribute1",
				"p2":"Custom Attribute2"
			}
		},{
			"id":123,
			"text":"Microsoft Office"
		},{
			"id":124,
			"text":"Games",
			"checked":true
		}]
	},{
		"id":13,
		"text":"index.html"
	},{
		"id":14,
		"text":"about.html"
	},{
		"id":15,
		"text":"welcome.html"
	}]
}]

开始正式编码
针对easyUI树形展示的json格式经行了实体类的描述，编写一个实体类

package com.xfz.entity;

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

/**
 * @author ld
 * 针对easyUI树形展示的json格式经行了实体类的描述
 *
 */
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 + "]";
	}
	

}

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.xfz.web.MenuAction">
	</action>
	<action path="/userAction" type="com.xfz.web.UserAction">
		<forward name="index" path="/index.jsp" redirect="false" />
		<forward name="login" path="/login.jsp" redirect="false" />
	</action>
</config>

写一个menudao继承jsonbasedao

package com.xfz.dao;

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

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


/**
 * @author ld
 * 1、查询数据库所有数据用于easyui的tree树形展示（但是直接得来的数据格式easyui不识别）
 * 2、递归查询节点集合，形成子父节点关系，具备层次结构
 * 3、转格式
 */
public class MenuDao extends JsonBaseDao{
	/**
	 * @author ld
	 * List<TreeNode>加上ObjectMapper可以转换成easyui的tree控件识别的json串
	 *
	 */
	public List<TreeNode> listTreeNode(Map<String, String[]> map, PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
		List<Map<String, Object>> listMenu = this.listMenu(map, pageBean);
		List<TreeNode> listTreeNode = new ArrayList<TreeNode>();
		this.listMapToTreeNode(listMenu, listTreeNode);
		return listTreeNode;
	}
	
/**
 * @param map
 * @param pageBean
 * @return
 * @throws InstantiationException
 * @throws IllegalAccessException
 * @throws SQLException
 * List<Map<String, Object>>
 * 返的是：{Menuid:001,Menuname:学生管理,childen[]},{Menuid:001,Menuname:学生管理}
 * 接下来需要递归查询子节点的集合存入当前节点
 */
public List<Map<String, Object>> listMenu(Map<String, String[]> map,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
		String sql="select * from t_easyui_menu where true";
		String id=JsonUtils.getParamVal(map, "Menuid");
		if(StringUtils.isNotBlank(id)) {
			//当前节点的id当做子节点父id进行查询
			sql+=" and parentid="+id;
		}else {
			sql+=" and parentid=-1";
		}
		return super.executeQuery(sql, pageBean);
	} 

/**
 * @param map
 * @param treeNode
 * 需要将后台的数据库查出来的数据格式转换成前台easyui所识别的数据
 * @throws SQLException 
 * @throws IllegalAccessException 
 * @throws InstantiationException 
 */
public void mapToTreeNode(Map<String, Object> map,TreeNode treeNode) throws InstantiationException, IllegalAccessException, SQLException {
	treeNode.setId(map.get("Menuid").toString());
	treeNode.setText(map.get("Menuname").toString());
	treeNode.setAttributes(map);
	
//	treeNode.setChildren(children);
	Map<String, String[]> childMap=new HashMap<String, String[]>();
	childMap.put("Menuid", new String[] {treeNode.getId()});
	//查询出当前节点所拥有的子节点的集合
	List<Map<String, Object>> listMenu=this.listMenu(childMap, null);
	List<TreeNode> listTreeNode=new ArrayList<TreeNode>();
	this.listMapToTreeNode(listMenu, listTreeNode);
	treeNode.setChildren(listTreeNode);
}

public void listMapToTreeNode(List<Map<String, Object>> list, List<TreeNode> listTreeNode) throws InstantiationException, IllegalAccessException, SQLException {
	TreeNode treeNode=null;
	for (Map<String, Object> map : list) {
		treeNode=new TreeNode();
		this.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>web_easyui</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  <filter>
  	<filter-name>encodingFiter</filter-name>
  	<filter-class>com.xfz.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>

再写一个menuaction类继承actionsupport

package com.xfz.web;

import java.sql.SQLException;
import java.util.List;

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

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

public class MenuAction extends  ActionSupport{
	private MenuDao menuDao = new MenuDao();

	public String menuTree(HttpServletRequest req,HttpServletResponse resp) {
		try {
			List<TreeNode> listTreeNode = this.menuDao.listTreeNode(req.getParameterMap(), null);
			ObjectMapper om = new ObjectMapper();
			ResponseUtil.write(resp, om.writeValueAsString(listTreeNode));
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}

index.js (bug：会开多数重复的选项卡，用exists判重)

$(function() {
	$('#tt').tree({
		url:'menuAction.action?methodName=menuTree',
		onClick:function(node){
			//alert(node.attributes.menuURL);//在用户点击的时候提示
			var content = '<iframe scrolling="no" frameborder="0" src="'+node.attributes.menuURL+'" width="99%" height="99%"></iframe>';
			if($("#menuTab").tabs('exists',node.text)){
				$("#menuTab").tabs('select',node.text)
			}else{
			$("#menuTab").tabs('add',{
				title:node.text,
				content:content,
				closable:true,
			})
			}
		}
	});
})

显示效果：

码农公寓

一.UI框架

二.案例

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