本文深入讲解EasyUI框架的CRUD操作，包括datagrid、dialog及form组件的使用，演示了如何实现分页、编辑、添加和删除功能，并展示了前后端分离的开发模式下，Java工程师与美工如何协作。
easyui高级控件（2）
easyui的crud（dialog，datagrid、form讲解）
-
datagrid布局
- 分页数据
easyui的页码page,页大小rows - datagrid组件
{total:10,rows:[{},{},{}]} - 加载中文插件包
locale/easyui-lang-zh_CN.js - 关键属性
后台数据
url
load/reload
列
columns
分页
pagination
pageList
pageSize
按钮
toolbar
- 分页数据
-
dialog布局
-
form布局
-
通用的JsonBaseDao增删改方法
-
dao层
-
web层
-
功能完善
前后端分离
美工、java工程师都是独立工作的，彼此之间在开发过程中是没有任何交际。
在开发前约定数据交互的格式。
java工程师的工作：写方法返回数据如tree_data1.json
美工：只管展示tree_data1.json
userManage.js
$(function() {
$('#dg').datagrid({
url:'../userAction.action?methodName=list',
pagination:true,
fitColumns:true,
columns:[[
{field:'code',title:'ID',width:100},
{field:'name',title:'用户名',width:100},
{field:'price',title:'密码',width:100,align:'right'}
]],
toolbar: [{
//增加
iconCls: 'icon-add',
handler: function(){
//alert('增加按钮');
$('#ff').form('clear');//清空
$('#dd').dialog('open');
$("#dd").alert("title","增加用户！！！");//增加信息
$("#lin").val("add");
}
},{
//编辑
iconCls: 'icon-edit',
handler: function(){
//alert('编辑按钮');
$('#dd').dialog('open');
// 通过easyui的form控件直接回填选中行的数据
var row = $('#dg').datagrid('getSelected');//选择需要删除的行
if(row){
$('#ff').form('load',row);
}else{
alert("请选择你要修改的数据");
}
}
},'-',{
//删除
iconCls: 'icon-remove',
handler: function(){
//alert('删除按钮')
var row=$('#dg').datagrid('getSelected');//选择需要删除的行
//判断是否选中
if(row){
$.ajax({
url:'../userAction.action?methodName=del&&SerialNo='+row.SerialNo
});
alert('删除了！！！');
$('#dg').datagrid('reload');
}else{
alert('删除失败');
}
}
},'-',{
}]
})
})
function ok(){
alert('ok');
$('#ff').form('submit', {
url:'../userAction.action?methodName=edit',
success:function(data){
// 将json串转成json对象
var res = eval('(' + data + ')');
// 比如说如果返回1代表成功，0代表失败，还有业务逻辑需要处理的话，由前端完成
if(res.code ==1){
$('#dd').dialog('close');
$('#dg').datagrid("reload");
}else{
}
}
});
}
UserAction
package com.lrc.web;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.lrc.dao.UserDao;
import com.lrc.framework.ActionSupport;
import com.lrc.util.PageBean;
import com.lrc.util.ResponseUtil;
public class UserAction extends com.zking.framework.ActionSupport {
private UserDao userDao = new UserDao();
public String login(HttpServletRequest req, HttpServletResponse resp) throws Exception {
String code = "index";
// 登录
try {
List<Map<String, Object>> list = this.userDao.list(req.getParameterMap(), null);
if (list != null && list.size() == 1) {// 用户存在
List<Map<String, Object>> menuList = this.userDao.getMenusByUser(req.getParameterMap(), null);
StringBuilder sd = new StringBuilder();
for (Map<String, Object> map : menuList) {
sd.append("," + map.get("menuId"));
}
req.setAttribute("menuIds", sd.substring(1));
} else {// 用户不存在
req.setAttribute("msg", "用户不存在");
code = "login";
}
} catch (Exception e) {
e.printStackTrace();
code = "login";
}
return code;
}
/**
* easyui的datagrid的数据来源
*
*/
public String list(HttpServletRequest req, HttpServletResponse resp) throws Exception {
Map<String, Object> map = new HashMap<String, Object>();
PageBean pageBean = new PageBean();
pageBean.setRequest(req);
try {
List<Map<String, Object>> list = this.userDao.list(req.getParameterMap(), pageBean);
map.put("total", pageBean.getTotal());
map.put("rows", list);
ObjectMapper om = new ObjectMapper();
ResponseUtil.write(resp, om.writeValueAsString(map));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public String edit(HttpServletRequest req, HttpServletResponse resp) {
try {
this.userDao.edit(req.getParameterMap());
ObjectMapper om = new ObjectMapper();
Map<String, Object> map = new HashMap<String, Object>();
map.put("code", 1);
map.put("msg", "成功");
ResponseUtil.write(resp, om.writeValueAsString(map));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 增加
* @param req
* @param resp
* @return
*/
public String add(HttpServletRequest req, HttpServletResponse resp) {
int add;
try {
add = this.userDao.add(req.getParameterMap());
ObjectMapper om = new ObjectMapper();
ResponseUtil.write(resp, om.writeValueAsString(add));
}catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 删除
* @param req
* @param resp
* @return
*/
public String del(HttpServletRequest req, HttpServletResponse resp) {
try {
int del=this.userDao.del(req.getParameterMap());
ObjectMapper om=new ObjectMapper();
ResponseUtil.write(resp, om.writeValueAsString(del));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
UserDao
package com.lrc.dao;
import java.util.List;
import java.util.Map;
import com.lrc.util.JsonBaseDao;
import com.lrc.util.JsonUtils;
import com.lrc.util.PageBean;
import com.lrc.util.StringUtils;
public class UserDao extends JsonBaseDao {
/**
* 查询用户分页列表
*用户登录
*/
public List<Map<String, Object>> list(Map<String,String[]> map,PageBean pageBean) throws Exception{
String sql="select * from t_easyui_user_version2 where true ";
String uid=JsonUtils.getParamVal(map, "uid");
String upwd=JsonUtils.getParamVal(map, "upwd");
if(StringUtils.isNotBlank(uid)) {
sql +="and uid = "+uid;
}
if(StringUtils.isNotBlank(upwd)) {
sql +=" and upwd ="+upwd;
}
return super.executeQuery(sql, pageBean);
}
//通过用户登录的唯一账号获取用户在权限中间表中获取菜单id的集合
public List<Map<String, Object>> getMenusByUser(Map<String,String[]> map,PageBean pageBean) throws Exception{
String sql="select * from t_easyui_usermenu where true ";
String uid=JsonUtils.getParamVal(map, "uid");
if(StringUtils.isNotBlank(uid)) {
sql +="and uid = "+uid;
}
return super.executeQuery(sql, pageBean);
}
/**
*
* @param map
* @return
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalArgumentException
*/
public int edit(Map<String, String[]> map) throws Exception{
String sql = "update t_easyui_user_version2 set uid=?,uname=?,upwd=? where serialno = ?";
return super.executeUpdate(sql, new String[] {"uid","uname","upwd","SerialNo"}, map);
}
/**
* 添加
* @param map
* @return
* @throws Exception
* @throws SecurityException
* @throws IllegalArgumentException
* @throws IllegalAccessException
* @throws SQLException
*/
public int add(Map<String, String[]> map) throws Exception {
String sql ="insert into t_easyui_user_version2 (uid,uname,upwd) values (?,?,?)";
return super.executeUpdate(sql, new String[] {"uid","uname","upwd"} , map);
}
/**
* 删除
* @param paMap
* @return
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalArgumentException
* @throws IllegalAccessException
* @throws SQLException
*/
public int del(Map<String, String[]> map) throws Exception {
String sql ="delete from t_easyui_user_version2 where SerialNo =? ";
return super.executeUpdate(sql, new String[] {"SerialNo"} , map);
}
}
userManage.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/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="${pageContext.request.contextPath }/static/js/public/easyui5/jquery.easyui.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath }/static/js/userManage.js"></script>
<title>人员信息维护</title>
</head>
<body>
<table id="dg"></table>
<!-- 新增修改对应的编辑窗体 -->
<div id="dd" class="easyui-dialog" title="编辑窗体" style="width:400px;height:200px;"
data-options="iconCls:'icon-save',resizable:true,modal:true,buttons:'#bb',closed:true">
<!--
自定义正则属性
$.extend({
})
-->
<form id="ff" method="post">
<input type="hidden" name="SerialNo" />
<div>
<label for="uid">uid:</label>
<input class="easyui-validatebox" type="text" name="uid" data-options="required:true" />
</div>
<div>
<label for="uname">uname:</label>
<input class="easyui-validatebox" type="text" name="uname" data-options="required:true" />
</div>
<div>
<label for="upwd">upwd:</label>
<input class="easyui-validatebox" type="text" name="upwd" data-options="required:true" />
</div>
</form>
</div>
<div id="bb">
<a href="#" class="easyui-linkbutton" onclick="ok()">保存</a>
<a href="#" class="easyui-linkbutton">关闭</a>
</div>
</body>
</html>
扫一扫
694
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
