文章目录
jQuery EasyUI 的简介
1、什么是easyui？
easyui是一种基于jQuery的用户界面插件集合
2、easyui能带给我们什么好处？
1）easyui是个完美支持HTML5网页的完整框架
2）easyui节省网页开发的时间和规模
3）easyui很简单但功能强大
3、 防止页面缓存
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
4、easyui如何使用？
layout
布局容器有5个区域：北、南、东、西和中间。中间区域面板是必须的，边缘的面板都是可选的。每个边缘区域面板都可以通过拖拽其边框改变大小，也可以点击折叠按钮将面板折叠起来。布局可以进行嵌套，用户可以通过组合布局构建复杂的布局结构。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/easyui5/themes/default/easyui.css"> //引入easyui.css
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/easyui5/themes/icon.css"> //引入icon.css
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.min.js"></script> //引入jquery.min.js
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/easyui5/jquery.easyui.min.js"></script> //引入jquery.easyui.min.js
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/index.js"></script> //外部的js，方便检查错误。
<title>首页</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;">
</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：jquery.min.js与jquery.easyui.min.js位置不能互换，否则没有效果
tree
树控件在web页面中一个将分层数据以树形结构进行显示。它提供用户展开、折叠、拖拽、编辑和异步加载等功能。
接下来我们就取数据库内的数据来展示树
TreeNode（实体类）
private String id;
private String text;
private Map<String, Object> attributes = new HashMap<>();
private List<TreeNode> children = new ArrayList<>();
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 Map<String, Object> getAttributes() {
return attributes;
}
public void setAttributes(Map<String, Object> attributes) {
this.attributes = attributes;
}
public List<TreeNode> getChildren() {
return children;
}
public void setChildren(List<TreeNode> children) {
this.children = children;
}
public TreeNode(String id, String text, Map<String, Object> attributes, List<TreeNode> children) {
super();
this.id = id;
this.text = text;
this.attributes = attributes;
this.children = children;
}
public TreeNode() {
super();
}
@Override
public String toString() {
return "TreeNode [id=" + id + ", text=" + text + ", attributes=" + attributes + ", children=" + children + "]";
}
MenuDao
public class MenuDao extends JsonBaseDao{
/**
*
* @param map req.getParameterMap
* @param pageBean
* @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 pageBean
* @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,...}
* ->{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
*/
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);
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);
}
/**
* [{Menuid:1,...[]},{Menuid:2,...[]}]
* ->[{id:1,....[]}]
* @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 {
TreeNode treeNode = null;
for (Map<String,Object> map : mapList) {
treeNode = new TreeNode();
menu2TreeNode(map, treeNode);
treeNodeList.add(treeNode);
}
}
}
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);
ObjectMapper om = new ObjectMapper();
//将list集合转换成json串
String jsonStr = om.writeValueAsString(list);
ResponseUtil.write(resp, jsonStr);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
配置mvc.xml
<action path="/menuAction" type="com.lst.web.MenuAction">
<forward name="index" path="/index.jsp" redirect="false" />
</action>
编写index.js
$('#tt').tree({
url:'menuAction.action?methodName=treeMenu'
});
编写jsp界面
<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;">
后台管理界面的菜单
<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
效果展示：
tabs
选项卡显示一批面板。但在同一个时间只会显示一个面板。每个选项卡面板都有头标题和一些小的按钮工具菜单，包括关闭按钮和其他自定义按钮。
点击左边的菜单在右边显示出相对应的页面
只要改动index.js就能够实现这种方式
$(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)){ //判断点击的是否已经存在，如果已经存在则移除所点击，并且选中所存在的。
$('#menuTabs').tabs('select',node.text);
}
else{ //反之
$('#menuTabs').tabs('add',{
title:node.text,
content:content,
closable:true,
tools:[{
iconCls:'icon-mini-refresh',
handler:function(){
alert('refresh');
}
}]
});
}
}
});
})
编写jsp
<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;">
后台管理界面的菜单
<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="menuTabs" class="easyui-tabs" style="">
<div title="Tab1" style="padding:20px;display:none;">欢迎使用</div>
</div>
</div>
</body>
效果展示：
注：404是因为没有该界面
刚入门还挺容易的，就是从数据库内取出数据来，有点脑回路不畅。不过还有时间，慢慢来！！！