Easyui(一)
1：什么是Easyui
EasyUI的目标就是帮助web开发者更轻松的打造出功能丰富并且美观的UI界面。
开发者不需要编写复杂的avascript，也不需要对css样式有深入的了解，
开发者需要了解的只有一些简单的html标签。
2:市面上的UI标签有哪些呢？
easyui：基本上的功能都有 但是页面不美观，不支持响应式
bootstrap：页面美观 需要收费 支持响应式
layui：页面美观 但是本身自带bug 支持响应式
案例
layout布局
tree加载菜单
tabs
引入easyui
如何引用呢
步骤如下：1：首先我们先把官网上写的代码copy到页面上
2：点中/static的后面一窜代码
3：选中Ctrl+Shift+R 点击最后含有default结尾的
4：点击黄色的交换的这个
5：选中Copy Qualifed Name 点击 再把官网上的值替换 就可以了
<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>
官网代码与自定义代码的定义
<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>
注意：顺序不能乱，因为一个路径是倚靠另外一个路径而展现出来的
今天我们的 案例
[{
"id":1,
"text":"My Documents",
"children":[{
"id":11,
"text":"Photos",
"state":"closed",
"children":[{
"id":111,
"text":"Friend"
},{
"id":112,
"text":"Wife"
},{
"id":113,
"text":"Company"
}]
},{
"id":12,
"text":"Program Files",
"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"
}]
}]
//实体类更具案例里面的值来定义
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 + "]";
}
}
我们所需要引入的类
架包：
index页面
<%@ 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>
```
注意：不要少写或者是漏写路径名
通过tree加载菜单
MenuDao 继承了JsonBaseDao
public class MenuDao extends JsonBaseDao {
/**
* @param map req.getparamerMap
* @param pageBean 分页
* @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;
}
/**
* 1.查询menu表的数据
* @param map
* @param pageBean
* @return
* @throws SQLException
* @throws IllegalAccessException
* @throws InstantiationException
*/
//查询不一定要对象 ，也可以集合 Map<String,Object>
public List<Map<String,Object>> listMenu(Map<String, String[]> map,PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
//数据库的列名与我们写的不同 所有需要查询
String sql="select * from t_easyui_menu where true ";
//拿到当前节点的Id id把ID当成父Id来查
String id=JsonUtils.getParamVal(map, "id");
//子节点由父Id来传
if(StringUtils.isNotBlank(id)) {
sql = sql + " and parentid = "+id;
}else {
//根节点数据库为负一
sql = sql + " and parentid = -1";
}
//查询所有节点
return super.executeQuery(sql, pageBean);
}
/**
* {Means：1,....[]}
* -->{id:1,....[]}
* menu表的数据格式不符合easyui树形展示的数据格式
* 需要转化成easyui所识别的数据格式
* @param map
* @param treeNode
* @throws SQLException
* @throws IllegalAccessException
* @throws InstantiationException
*/
private 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);
// treeNode.setChildren(children);
Map<String, String[]> jspMap=new HashMap<>();
//当前节点作为父节点的id查
jspMap.put("id", new String[] {treeNode.getId()});
//查出当前Id的子节点 直接查找数据库
List<Map<String, Object>> listMenu = this.listMenu(jspMap, null);
//转换为TreeNode
List<TreeNode> treeNodeList=new ArrayList<>();
menuList2TreeNodeList(listMenu, treeNodeList);
treeNode.setChildren(treeNodeList);
}
/**
* [{Means：1,....[]},{Means：2,....[]}]
* -->[{id:1,....[]},{id:2,....[]}]
* @param mapList
* @param treeNodeList
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
*/
private void menuList2TreeNodeList(List<Map<String, Object>>mapList,List<TreeNode> treeNodeList) throws InstantiationException, IllegalAccessException, SQLException {
//节约内存
TreeNode treeNode=null;
for (Map<String, Object> map : mapList) {
treeNode=new TreeNode();
menu2TreeNode(map, treeNode);
treeNodeList.add(treeNode);
}
}
}
mvc.xml
<?xml version="1.0" encoding="UTF-8"?>
<config>
<action path="/menuAction" type="com.xyx.web.MenuAction">
<forward name="index" path="/index.jsp" redirect="false" />
</action>
</config>
MenuAction
public class MenuAction extends ActionSupport {
private MenuDao menuDao=new MenuDao();
public String treeMenu(HttpServletRequest req,HttpServletResponse resp) {
try {
List<TreeNode> list = this.menuDao.list(req.getParameterMap(), null);
//将list集合转换为json串
ObjectMapper om=new ObjectMapper();
String jsonStr = om.writeValueAsString(list);
ResponseUtil.write(resp, jsonStr);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
tabs
tabs菜单页面，在左侧会出现相应的操作
//写一个程序入口：
$(function(){
$('#tt').tree({
url:'menuAction.action?methodName=treeMenu',
onClick:function(node){
var content = '<iframe scrolling="no" frameborder="0" src="'+node.attributes.menuURL+'" width="99%" height="99%"></iframe>';
if($('#menuTabs').tabs('exists',node.text)){
$('#menuTabs').tabs('select',node.text);
}else{
$('#menuTabs').tabs('add',{
title:node.text,
content:content,
closable:true,
tools:[{
iconCls:'icon-mini-refresh',
handler:function(){
alert('refresh');
}
}]
});
}
}
});
})
//页面的展示为：
//页面点击展示的效果：
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