easyui的crud（dialog，datagrid、form讲解）
1、datagrid布局
2、dialog布局
3、form布局
4、通用的JsonBaseDao增删改方法
5、dao层
6、web层
7、功能完善
陈旧的开发模式
美工（ui工程师：出一个项目模型）
java工程师：将原有的html转成jsp，动态展示数据
缺点：
客户需要调节前端的展示效果
解决：由美工去重新排版，重新选色。
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
前端：
代码：
创建userManage.jsp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="${pageContext.request.contextPath }/static/easyui5/themes/default/easyui.css">
<link rel="stylesheet" type="text/css"
href="${pageContext.request.contextPath }/static/easyui5/themes/icon.css">
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/easyui5/jquery.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/easyui5/jquery.easyui.min.js"></script>
<script type="text/javascript"
src="${pageContext.request.contextPath }/static/js/userManage.js"></script>
<title>Insert title here</title>
</head>
<body>
<table id="dg"></table>
<!--
自定义属性
$.extend({
validType{
xxx:fun
}
})
-->
<!-- 新增修改啊对应的编辑窗体 -->
<div id="dd" class="easyui-dialog" title="编辑窗口"
style="width: 400px; height: 200px;"
data-options="iconCls:'icon-save',resizable:true,modal:true,buttons:'#bb',closed:true">
<form id="ff" method="post">
<input type="hidden" name="SeriaLNo">
<div>
<label for="uid">uid:</label> <input class="easyui-validatebox"
type="text" name="name" 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="on()">保存</a>
<a href="#" class="easyui-linkbutton">关闭</a>
</div>
</body>
</html>
把demo里面的json文件放到jsp同一目录中
datagrid_data1.json：
{"total":28,"rows":[
{"uid":"FI-SW-01","uname":"Koi","upwd":10.00,"status":"P","listprice":36.50,"attr1":"Large","itemid":"EST-1"},
{"uid":"K9-DL-01","uname":"Dalmation","upwd":12.00,"status":"P","listprice":18.50,"attr1":"Spotted Adult Female","itemid":"EST-10"},
{"uid":"RP-SN-01","uname":"Rattlesnake","upwd":12.00,"status":"P","listprice":38.50,"attr1":"Venomless","itemid":"EST-11"},
{"uid":"RP-SN-01","uname":"Rattlesnake","upwd":12.00,"status":"P","listprice":26.50,"attr1":"Rattleless","itemid":"EST-12"},
{"uid":"RP-LI-02","uname":"Iguana","upwd":12.00,"status":"P","listprice":35.50,"attr1":"Green Adult","itemid":"EST-13"},
{"uid":"FL-DSH-01","uname":"Manx","upwd":12.00,"status":"P","listprice":158.50,"attr1":"Tailless","itemid":"EST-14"},
{"uid":"FL-DSH-01","uname":"Manx","upwd":12.00,"status":"P","listprice":83.50,"attr1":"With tail","itemid":"EST-15"},
{"uid":"FL-DLH-02","uname":"Persian","upwd":12.00,"status":"P","listprice":23.50,"attr1":"Adult Female","itemid":"EST-16"},
{"uid":"FL-DLH-02","uname":"Persian","upwd":12.00,"status":"P","listprice":89.50,"attr1":"Adult Male","itemid":"EST-17"},
{"uid":"AV-CB-01","uname":"Amazon Parrot","upwd":92.00,"status":"P","listprice":63.50,"attr1":"Adult Male","itemid":"EST-18"}
]}
创建userManage.js文件：
$(function(){
$('#dg').datagrid({
url:'../userAction.action?methodName=list',
pagination:true, // 分页
fitColumns:true, // 挤满
columns:[[
{field:'uid',title:'账号',width:100},
{field:'uname',title:'名称',width:100},
{field:'upwd',title:'密码',width:100,align:'right'}
]] ,
toolbar: [{
iconCls: 'icon-add',
handler: function(){
$('#ff').form('clear');
$('#dd').dialog('open');
$('#method').val('add');
$('#dg').datagrid('reload');
}
},{
iconCls: 'icon-edit',
handler: function(){
// 获取easyui的from控件直接回填
var row= $('#dg').datagrid('getSelected');
if(row){
// 回显数据
$('#ff').form('load','get_data.php');
$('#method').val('edit');
}else{
alert("请选择你要修改的选择项");
}
}
},'-',{
iconCls: 'icon-remove',
handler: function(){
var row = $('#dg').datagrid('getSelected');
// 选中
if(row){
if(confirm('确定删除吗?')){
$('#name').text('删除');
$('#name').attr('value','del');
//刷新
$('#ff').form('load',row);
ok();
}
}
else{
alert('请选中你要删除的选择项');
}
}
}]
});
});
function ok(){
$('#ff').form('submit', {
url:'../userAction.action?methodName=edit',
success:function(data){
// 将json串转换成json对象
var res=eval('('+data+')');
// 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
alert(res.code);
if(res.code ==1){
$('#dd').dialog('close');
$('#dg').datagrid("reload");
$('#ff').form('clear');
}else{
}
}
});
function del() {
$('#del').form('submit', {
url:'../userAction.action?methodName=del',
success:function(data){
// 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
// 将json串转成json对象
var res = eval('('+data+')');
if(res.code == 1){
// 刷新
$('#dg').datagrid('reload')
}else{
}
}
});
}
}
后端：
dao层：
UserDao：
package com.xhh.dao;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import com.xhh.util.JsonBaseDao;
import com.xhh.util.JsonUtils;
import com.xhh.util.PageBean;
import com.xhh.util.StringUtils;
public class UserDao extends JsonBaseDao {
/**
* 用于查询用户分页列表所用
* 用于用户登录所用
* @param map
* @param pageBean
* @return
* @throws SQLException
* @throws IllegalAccessException
* @throws InstantiationException
*/
public List<Map<String, Object>> list(Map<String, String[]> map, PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
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，在用户父权限中间表中获取菜单ID的集合
* @param map
* @param pageBean
* @return
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
*/
public List<Map<String, Object>> getMenusByUser(Map<String, String[]> map, PageBean pageBean) throws InstantiationException, IllegalAccessException, SQLException{
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);
}
/**
* 修改
* @param map
* @return
* @throws InstantiationException
* @throws IllegalAccessException
* @throws SQLException
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalArgumentException
*/
public int edit(Map<String, String[]> map) throws InstantiationException, IllegalAccessException, SQLException, NoSuchFieldException, SecurityException, IllegalArgumentException{
String sql = "update t_easyui_user_version2 set uid=?,uname=?,upwd=? where serialno = ?";
return super.executeUpdate(sql, new String[] {"uid","uname","upwd","SerialNo"}, map);
}
/**
* 增加
* @param paMap
* @return
* @throws NoSuchFieldException
* @throws SecurityException
* @throws IllegalArgumentException
* @throws IllegalAccessException
* @throws SQLException
*/
public int add(Map<String, String[]> map) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException {
String sql="insert into t_easyui_user_version2 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[]> paMap) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException, SQLException {
String sql="delete from t_easyui_user_version2 where SerialNo=?";
return super.executeUpdate(sql, new String[] {"SerialNo"} , paMap);
}
}
web层：
package com.xhh.web;
import java.sql.SQLException;
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.databind.ObjectMapper;
import com.xhh.dao.UserDao;
import com.xhh.util.PageBean;
import com.xhh.util.ResponseUtil;
import com.zking.framework.ActionSupport;
public class UserAction extends ActionSupport {
private UserDao userDao = new UserDao();
public String login(HttpServletRequest req, HttpServletResponse resp) {
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 sb = new StringBuilder();
for (Map<String, Object> map : menuList) {
sb.append(","+map.get("menuId"));
}
// ,001,002
req.setAttribute("menuIds", sb.substring(1));
} else {
// 用户不存在
req.setAttribute("msg", "用户不存在");
code = "login";
}
} catch (InstantiationException | IllegalAccessException | SQLException e) {
e.printStackTrace();
code = "login";
}
return code;
}
/**
* easyui的datagrid的数据来源
* @param req
* @param resp
* @return
*/
public String list(HttpServletRequest req, HttpServletResponse resp) {
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;
}
/**
* 修改
* @param req
* @param resp
* @return
*/
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
* @throws Exception
*/
public String add(HttpServletRequest req,HttpServletResponse resp) throws Exception{
this.userDao.add(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));
return null;
}
/**
* 删除
* @param req
* @param resp
* @return
* @throws Exception
*/
public String del(HttpServletRequest req,HttpServletResponse resp) throws Exception{
this.userDao.del(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));
return null;
}
}
配置xml:
<?xml version="1.0" encoding="UTF-8"?>
<config>
<!-- <action path="/regAction" type="test.RegAction">
<forward name="failed" path="/reg.jsp" redirect="false" />
<forward name="success" path="/login.jsp" redirect="true" />
</action> -->
<action path="/menuAction" type="com.xhh.web.MenuAction">
</action>
<action path="/userAction" type="com.xhh.web.UserAction">
<forward name="index" path="/index.jsp" redirect="false" />
<forward name="login" path="/login.jsp" redirect="false" />
</action>
</config>
效果：
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