后台开发人员不擅长前端UI界面，而小型软件公司没有专职美工岗位，开发人员只能借助开源UI框架，复用已有组件，完成用户操作界面。EasyUI是基于jQuery的UI插件集合体，可帮助开发者轻松构建网页。
一、引用EasyUI
官网下载EasyUI组件jquery-easyui-1.*.*.zip，项目工程导入locale文件夹、themes文件夹、jquery.easyui.min.js、jquery.min.js文件。
二、以系统用户首页为例，使用EasyUI
1) 用户登录系统，首页界面
2）home.jsp编码设计
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head >
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>管理系统</title>
<link rel="stylesheet" href="plugin/easyui/themes/icon.css" />
<link rel="stylesheet" href="plugin/easyui/themes/default/easyui.css" />
<link rel="stylesheet" href="css/home.css"/>
<script type="text/javascript" src="plugin/easyui/jquery.min.js"></script>
<script type="text/javascript" src="plugin/easyui/jquery.easyui.min.js"></script>
<script type="text/javascript" src="plugin/easyui/locale/easyui-lang-zh_CN.js"></script>
<script type="text/javascript" src="js/pathurl.js"></script>
<script type="text/javascript" src="js/home.js?v=1.01"></script>
<script type="text/javascript" src="js/head.js"></script>
</head>
<!-- ${userName} -->
<body class="easyui-layout" style="overflow-y: hidden" scroll="no">
<input id="logUser" type="hidden" value="${userName}"/>
<input id="userNotice" type="hidden" value="${userNotice}"/>
<div region="north" split="true" border="false" style="overflow: hidden; height: 35px;
background: url(images/header.jpg) #7f99be repeat-x center 50%;
line-height: 30px;color: #fff; font-family: Verdana, 宋体">
<span style="padding-left:5px; font-size: 18px; ">管理系统</span>
<span style="float:right; padding-right:20px; font-size: 18px;" class="head">
<a href="javascript:void(0)" id="menub" class="easyui-menubutton"
data-options="menu:\'#userfunc\',iconCls:\'icon-userMgr\'">${userName}</a>
</span>
</div>
<div region="south" split="true" style="height: 30px; background: #D2E0F2; ">
<div class="footer">Copyright © 2010-2017 Start, All rights reserved.</div>
</div>
<div region="west" hide="true" split="true" title="导航菜单" style="width:180px;" id="west">
<div id="menunav" class="easyui-accordion" fit="true" border="false">
<!-- 导航内容 -->
</div>
</div>
<div id="mainPanle" region="center" style="background: #eee; overflow-y:hidden">
<div id="tabs" class="easyui-tabs" fit="true" border="false" >
<div title="首页" style="padding:20px;overflow:hidden; color:blue; " >
<h1 style="font-size:20px;" align="center">欢迎使用管理系统</h1>
</div>
</div>
</div>
<!--修改密码窗口-->
<div id="w" class="easyui-window" title="修改密码" collapsible="false" minimizable="false"
maximizable="false" icon="icon-save" style="width: 300px; height: 150px; padding: 5px;
background: #fafafa;">
<div class="easyui-layout" fit="true">
<div region="center" border="false" style="padding: 10px; background: #fff; border: 1px solid #ccc;">
<table cellpadding=3>
<tr>
<td>旧密码：</td>
<td><input id="txtOldPass" type="password" class="easyui-textbox" /></td>
</tr>
<tr>
<td>新密码：</td>
<td><input id="txtNewPass" type="password" class="easyui-textbox" /></td>
</tr>
<tr>
<td>确认密码：</td>
<td><input id="txtRePass" type="password" class="easyui-textbox" /></td>
</tr>
</table>
</div>
<div region="south" border="false" style="text-align: right; height: 30px; line-height: 30px;"> <a id="btnEp" class="easyui-linkbutton" icon="icon-ok" href="javascript:void(0)" > 确定</a> <a id="btnCancel" class="easyui-linkbutton" icon="icon-cancel" href="javascript:void(0)">取消</a> </div>
</div>
</div>
<div id="mm" class="easyui-menu" style="width:150px;">
<div id="mm-tabupdate">刷新</div>
<div class="menu-sep"></div>
<div id="mm-tabclose">关闭</div>
<div id="mm-tabcloseall">全部关闭</div>
<div id="mm-tabcloseother">除此之外全部关闭</div>
<div class="menu-sep"></div>
<div id="mm-tabcloseright">当前页右侧全部关闭</div>
<div id="mm-tabcloseleft">当前页左侧全部关闭</div>
<div class="menu-sep"></div>
<div id="mm-exit">退出</div>
</div>
<div id="userfunc" style="width:150px;">
<div id="editpass" data-options="iconCls:\'icon-edit\'">修改密码</div>
<div id="loginOut" data-options="iconCls:\'icon-stop\'">注销</div>
</div>
</body>
</html>
3）根据easyUI组件，编写功能菜单UI
$(function() {
InitLeftMenu();
tabClose();
tabCloseEven();
});
// 初始化左侧菜单
function InitLeftMenu() {
$("#menunav").accordion({
animate : false
});
$.ajax({
url : "user/getusermenu.do",
type : "POST",
dataType : "json",
success : function(data) {
console.log("菜单数据: " + JSON.stringify(data));
$.each(data.menus, function(i, n) {
var menulist = \'\';
menulist += \'<ul>\';
$.each(n.menus, function(j, o) {
menulist += \'<li><div><a ref="\'
+ o.menuId
+ \'" href="#" rel="\'
+ o.menuUrl
+ \'" ><span class="icon \'
+ o.icon
+ \'" > </span><span class="nav">\'
+ o.menuName
+ \'</span></a></div></li> \';
})
menulist += \'</ul>\';
$(\'#menunav\').accordion(\'add\', {
title : n.menuName,
content : menulist,
iconCls : \'icon \' + n.icon
});
});
$(\'.easyui-accordion li a\').click(function() {
var tabTitle = $(this).children(\'.nav\').text();
var url = $(this).attr("rel");
var menuid = $(this).attr("ref");
addTab(tabTitle, url);
$(\'.easyui-accordion li div\').removeClass("selected");
$(this).parent().addClass("selected");
}).hover(function() {
$(this).parent().addClass("hover");
}, function() {
$(this).parent().removeClass("hover");
});
// 选中第一个
var panels = $(\'#menunav\').accordion(\'panels\');
var t = panels[0].panel(\'options\').title;
$(\'#menunav\').accordion(\'select\', t);
}
});
}
// 添加选项卡
function addTab(subtitle, url) {
if (!$(\'#tabs\').tabs(\'exists\', subtitle)) {
$(\'#tabs\').tabs(\'add\', {
title : subtitle,
content : createFrame(url),
closable : true
// icon:icon
});
} else {
$(\'#tabs\').tabs(\'select\', subtitle);
$(\'#mm-tabupdate\').click();
}
tabClose();
}
// 创建点击菜单时打开框架
function createFrame(url) {
var s = \'<iframe scrolling="auto" frameborder="0" src="\' + url
+ \'" style="width:100%;height:100%;"></iframe>\';
return s;
}
// 关闭选项卡
function tabClose() {
/* 双击关闭TAB选项卡 */
$(".tabs-inner").dblclick(function() {
var subtitle = $(this).children(".tabs-closable").text();
$(\'#tabs\').tabs(\'close\', subtitle);
})
/* 为选项卡绑定右键 */
$(".tabs-inner").bind(\'contextmenu\', function(e) {
$(\'#mm\').menu(\'show\', {
left : e.pageX,
top : e.pageY
});
var subtitle = $(this).children(".tabs-closable").text();
$(\'#mm\').data("currtab", subtitle);
$(\'#tabs\').tabs(\'select\', subtitle);
return false;
});
}
// 绑定右键菜单事件
function tabCloseEven() {
// 刷新
$(\'#mm-tabupdate\').click(function() {
var currTab = $(\'#tabs\').tabs(\'getSelected\');
var url = $(currTab.panel(\'options\').content).attr(\'src\');
$(\'#tabs\').tabs(\'update\', {
tab : currTab,
options : {
content : createFrame(url)
}
})
})
// 关闭当前
$(\'#mm-tabclose\').click(function() {
var currtab_title = $(\'#mm\').data("currtab");
$(\'#tabs\').tabs(\'close\', currtab_title);
})
// 全部关闭
$(\'#mm-tabcloseall\').click(function() {
$(\'.tabs-inner span\').each(function(i, n) {
var t = $(n).text();
$(\'#tabs\').tabs(\'close\', t);
});
});
// 关闭除当前之外的TAB
$(\'#mm-tabcloseother\').click(function() {
$(\'#mm-tabcloseright\').click();
$(\'#mm-tabcloseleft\').click();
});
// 关闭当前右侧的TAB
$(\'#mm-tabcloseright\').click(function() {
var nextall = $(\'.tabs-selected\').nextAll();
if (nextall.length == 0) {
$.messager.alert(\'系统提示\', \'已关闭\', \'error\');
return false;
}
nextall.each(function(i, n) {
var t = $(\'a:eq(0) span\', $(n)).text();
$(\'#tabs\').tabs(\'close\', t);
});
return false;
});
// 关闭当前左侧的TAB
$(\'#mm-tabcloseleft\').click(function() {
var prevall = $(\'.tabs-selected\').prevAll();
if (prevall.length == 0) {
return false;
}
prevall.each(function(i, n) {
var t = $(\'a:eq(0) span\', $(n)).text();
$(\'#tabs\').tabs(\'close\', t);
});
return false;
});
// 退出
$("#mm-exit").click(function() {
$(\'#mm\').menu(\'hide\');
})
}
4）菜单Json对象数据格式
{"menus":[{"icon":null,"menuId":"A","menuName":"机构管理","menus":[{"menuId":"A1","menuName":"部门机构","parentId":"A","menuUrl":"dept/index.do","serialNo":null,"icon":null}]},{"icon":"icon-overview","menuId":"H","menuName":"系统管理","menus":[{"menuId":"H1","menuName":"用户管理","parentId":"H","menuUrl":"system/user/index.do","serialNo":null,"icon":"icon-overview"},{"menuId":"H2","menuName":"角色管理","parentId":"H","menuUrl":"system/role/index.do","serialNo":null,"icon":"icon-overview"},{"menuId":"H3","menuName":"菜单管理","parentId":"H","menuUrl":"system/menu/index.do","serialNo":null,"icon":"icon-overview"},{"menuId":"H4","menuName":"岗位成员","parentId":"H","menuUrl":"system/rolemember/index.do","serialNo":null,"icon":null},{"menuId":"H5","menuName":"系统日志","parentId":"H","menuUrl":"system/log/index.do","serialNo":null,"icon":"icon-overview"},{"menuId":"H6","menuName":"数据字典","parentId":"H","menuUrl":"system/param/index.do","serialNo":null,"icon":"icon-overview"}]}]}
三、API手册
1) 官网组件（英文）地址：http://www.jeasyui.com/documentation/index.php#
2) jQuery EasyUI 官方API文档中文版,下载地址：http://download.csdn.net/album/detail/343