EasyUI实战教程-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_44847231/article/details/91452843

easyui【一】

什么是 easyui

easyui=jquery+html4（用来做后台的管理界面）

准备工作

下载程序库并导入EasyUI的CSS和Javascript文件到您的页面。

<link rel="stylesheet" type="text/css" href="easyui/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="easyui/themes/icon.css">   
<script type="text/javascript" src="easyui/jquery-1.7.2.min.js"></script>   
<script type="text/javascript" src="easyui/jquery.easyui.min.js"></script>

一旦你导入了EasyUI必须的文件，你就可以通过标记或Javascript定义一个EasyUI组件
在这里插入图片描述
把所有的文件和jar包准备好

案例一、通过layout布局

<%@ 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="${pageContext.request.contextPath }/static/js/easyui5/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/easyui5/themes/icon.css">   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.min.js"></script>   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.easyui.min.js"></script>  
<title>Insert title here</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;">west content</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>
</body>
</html>

效果图:
在这里插入图片描述

案例二、通过tree加载菜单

在案例一基础上完整:

我们要把数据库中的数据
在这里插入图片描述
以树形结构展示在页面上
我们写一个树形实体类


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

然后写倒方法
因为menu表的数据不符合easyui树形展示的数据格式
所以需要转换成easyui所能识别的数据格式


public class MenuDao extends JsonBaseDao {
	/**
	 * 
	 * @param map req.getParmeterMap
	 * @param page
	 * @return
	 * @throws SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
	public List<TreeNode> list(Map<String, String[]> map,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
		List<Map<String, Object>> listMenu = this.listMenu(map, pageBean);
		List<TreeNode> treeNodeList = new ArrayList<>();
		menuList2TreeNodeList(listMenu, treeNodeList);
		return treeNodeList;
	}
	/**
	 * 查询menu表的数据
	 * @param map
	 * @param page
	 * @return
	 * @throws SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
	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, "id");
		if(StringUtils.isNotBlank(id)) {
			sql = sql + " and parentid = "+id;
		}else {
			sql = sql + " and parentid = -1";
		}
		return super.executeQuery(sql, pageBean);
	}
	/**
	 * [{Menuid:1,...[]},{Menuid:1,...[]}]--->[{id:1,...[]},{id:1,...[]}]
	 * @param mapList
	 * @param treeNodeList
	 * @throws InstantiationException
	 * @throws IllegalAccessException
	 * @throws SQLException
	 */
	public void menuList2TreeNodeList(List<Map<String, Object>> mapList,List<TreeNode> treeNodeList) throws InstantiationException, IllegalAccessException, SQLException {
		TreeNode treeNode = null;
		for (Map<String, Object> map : mapList) {
			treeNode = new TreeNode();
			menu2TreeNode(map,treeNode);
			treeNodeList.add(treeNode);
		}
	
	}
	/**
	 * {Menuid:1,...}--->{id:1,...}
	 * menu表的数据不符合easyui树形展示的数据格式
	 * 需要转换成easyui所能识别的数据格式
	 * @param map
	 * @param treeNode
	 * @throws SQLException 
	 * @throws IllegalAccessException 
	 * @throws InstantiationException 
	 */
	public void menu2TreeNode(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);  
		
		Map<String, String[]> jspmap = new HashMap<>();
		jspmap.put("id", new String[] {treeNode.getId()});
		List<Map<String, Object>> listMenu = this.listMenu(jspmap, null);
		List<TreeNode> treeNodeList = new ArrayList<>();
		menuList2TreeNodeList(listMenu, treeNodeList);
		treeNode.setChildren(treeNodeList);
	}
}

写web层:


public class MenuAction extends ActionSupport{
	private MenuDao menuDao = new MenuDao();
	
	public String treeMenu(HttpServletRequest req,HttpServletResponse resp) throws Exception {
		List<TreeNode> list = this.menuDao.list(req.getParameterMap(), null);
		ObjectMapper om = new ObjectMapper();
		String jsonStr = om.writeValueAsString(list);
		ResponseUtil.write(resp, jsonStr);
		
		return null;
	}
}

然后在mvc.xml中配置一下

<?xml version="1.0" encoding="UTF-8"?>
<config>
	<action path="/menuAction" type="com.web.MenuAction">
		<forward name="index" path="/index.jsp" redirect="false" />
	</action>
</config>

写一个外部js 然后在jsp中引用

$(function(){
	$('#tt').tree({
		url:'menuAction.action?methodName=treeMenu'
	});
})

<%@ 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="${pageContext.request.contextPath }/static/js/easyui5/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/easyui5/themes/icon.css">   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.min.js"></script>   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.easyui.min.js"></script>  
//引用外部js
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/index.js"></script>  
<title>Insert title here</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;">
	//树控件使用<ul>元素定义。标签能够定义分支和子节点。节点都定义在<ul>列表内的<li>元素中
		<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>
</body>
</html>

效果图:
在这里插入图片描述

案例三、通过菜单去打开不同的tab页

在前两个案例下完整:
通过标签可以更容易的创建选项卡，我们不需要写任何Javascript代码,只需要给

标签添加一个类ID。每个选项卡面板都通过子

标签进行创建

<%@ 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="${pageContext.request.contextPath }/static/js/easyui5/themes/default/easyui.css">   
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/easyui5/themes/icon.css">   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.min.js"></script>   
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.easyui.min.js"></script>  
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/index.js"></script>  
<title>Insert title here</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;">
		<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>
	//添加了这些:
	<div data-options="region:'center',title:'Center'">
		<div id="tabs" class="easyui-tabs" style="">   
		    <div title="Tab1" style="padding:20px;display:none;">   
		          欢迎使用!!!
		    </div>   
		</div>  
	</div>
</body>
</html>

在js中改动了一下:

$(function(){
	$('#tt').tree({
		url:'menuAction.action?methodName=treeMenu',
		onClick:function(node){
			var content = '<iframe scrolling="no" frameborder="0" src="'+node.attributes.menuURL+'" width="99%" height="99%"></iframe>';
			//如果有就选中
			if($('#tabs').tabs('exists',node.text)){
				$('#tabs').tabs('select',node.text)
			}else{//没有就添加
				$('#tabs').tabs('add',{    
				    title:node.text,    
				    content:content,    
				    closable:true,    
				    tools:[{    
				        iconCls:'icon-mini-refresh',    
				        handler:function(){    
				            alert('refresh');    
				        }    
				    }]    
				});  
			}
		}
	});
})

效果图:(因为我没有写对应的jsp页面,所以404页面)
在这里插入图片描述