easyui入门
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2022-03-30 19:15:17
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EasyUI入门
1.EasyUI是什么?
jQuery EasyUI是一组基于jQuery的UI插件集合体,而jQuery 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javascript,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代码
2.jQuery EasyUI有以下特点:
1、基于jquery用户界面插件的集合
2、为一些当前用于交互的js应用提供必要的功能
3、EasyUI支持两种渲染方式分别为javascript方式(如:$(’#p’).panel({…}))和html标记方式(如:class=“easyui-panel”)
4、支持HTML5(通过data-options属性)
5、开发产品时可节省时间和资源
6、简单,但很强大
7、支持扩展,可根据自己的需求扩展控件
8、目前各项不足正以版本递增的方式不断完善
3.代码实现案例
需要导入的jar包:
util工具类:
引入js和css样式文件
<link rel="stylesheet" type="text/css" href="easyui/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="easyui/themes/icon.css">
<script type="text/javascript" src="easyui/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="easyui/jquery.easyui.min.js"></script>
3.1通过layout布局:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>后台展示</title>
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/static/js/public/easyui5/themes/icon.css">
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.easyui.min.js"></script>
</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>
MenuDao.java
package com.pyc.dao;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.pyc.entity.TreeNode;
import util.JsonBaseDao;
import util.JsonUtils;
import util.PageBean;
import util.StringUtils;
public class MenuDao extends JsonBaseDao {
/**
* * 给前台返回tree_data1.json的字符串
* 从前台jsp传递过来的参数集合
* List<TreeNode>加上ObjectMapper可以转换成easyui的tree控件识别的json串
* @param map
* @param pageBean
* @return
* @throws SQLException
* @throws IllegalAccessException
* @throws InstantiationException
*/
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.listMapToListTreeNode(listMenu, listTreeNode);
return listTreeNode;
}
/**
* List<Map<String,Object>>
* ->【{Menuid:001,Menuname:学生管理,children:[]},{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
*
* @param map
* @param pageBean
* @return
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
*/
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");
//System.out.println("id:"+id);
if(StringUtils.isNotBlank(id)) {
// 当前节点的ID当作子节点父ID进行查询
sql += " and parentid="+id;
//System.out.println(sql);
}else {
sql += " and parentid=-1";
//System.out.println(sql);
}
return super.executeQuery(sql, pageBean);
}
/**
* 需要将后台数据库查出来的数据格式转换成前台easyui所识别的数据
* @param map
* @param treeNode
* @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.listMapToListTreeNode(listMenu, listTreeNode);
treeNode.setChildren(listTreeNode);
}
public void listMapToListTreeNode(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);
}
}
}
TreeNode.java
package com.pyc.entity;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 针对easyui属性展示的json格式串进行了实体类的描述
* @author 96345
*
*/
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 + "]";
}
}
MenuAction.java
package com.pyc.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.pyc.dao.MenuDao;
import com.pyc.entity.TreeNode;
import com.pyc.framework.ActionSupport;
import 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.jsp
<%@ 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/easyui/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/static/easyui/themes/icon.css">
<script type="text/javascript" src="${pageContext.request.contextPath}/static/easyui/jquery.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/static/easyui/jquery.easyui.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/static/js/index.js"></script>
<title>后台管理主界面</title>
</head>
<body class="easyui-layout">
<input type="hidden" id="menuIds" value="${menuIds}">
<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>
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