终于完成CRUD的功能了，注意，这里会对前面有一些改动，UserController的listUser() 已经改写了，现在把全部整理一下吧。
JSP：
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><base href="<%=basePath%>"><meta name="description" content="easyui help you build your web page easily!"><title>jQuery EasyUI CRUD Demo</title><link rel="stylesheet" type="text/css" href="css/easyui/themes/default/easyui.css"><link rel="stylesheet" type="text/css" href="css/easyui/themes/icon.css"><link rel="stylesheet" type="text/css" href="css/easyui/demo.css"><script type="text/javascript" src="js/jquery-easyui-1.4.2/jquery.min.js"></script><script type="text/javascript" src="js/jquery-easyui-1.4.2/jquery.easyui.min.js"></script><style type="text/css">#fm{margin:0;padding:10px 30px;}.ftitle{font-size:14px;font-weight:bold;color:#666;padding:5px 0;margin-bottom:10px;border-bottom:1px solid #ccc;}.fitem{margin-bottom:5px;}.fitem label{display:inline-block;width:80px;}</style><script type="text/javascript">var url;function newUser(){$('#dlg').dialog('open').dialog('setTitle','新建用户');$('#fm').form('clear');url = 'user/addUser';}function editUser(){var row = $('#dg').datagrid('getSelected');// alert(row.userId);if (row){$('#dlg').dialog('open').dialog('setTitle','编辑用户');$('#fm').form('load',row);//url = 'user/updateUser?id='+row.userId;url ='user/updateUser';}}function saveUser(){$('#fm').form('submit',{//url:'user/addUser',url: url,onSubmit: function(){return $(this).form('validate');},success: function(result){var result = eval('('+result+')');if (result.success){$.messager.show({title:'Info',msg:result.msg,showType:'fade',style:{right:'',bottom:''}});$('#dlg').dialog('close');// close the dialog$('#dg').datagrid('reload');// reload the user data} else {$.messager.show({title: 'Error',msg: result.msg});}}});}function removeUser(){var row = $('#dg').datagrid('getSelected');//alert(row.id);if (row){$.messager.confirm('Confirm','你确定要删除用户吗?',function(r){if (r){$.post('user/removeUser',{id:row.userId},function(result){if (result.success){$.messager.show({title:'Info',msg:result.msg,showType:'fade',style:{right:'',bottom:''}});$('#dg').datagrid('reload');// reload the user data} else {$.messager.show({// show error messagetitle: 'Error',msg: result.msg});}},'json');}});}}function doSearch(){$('#dg').datagrid('load',{queryUserId: $('#userId').val()});}</script></head><body><h2>Basic CRUD Application</h2><div class="demo-info" style="margin-bottom:10px"><div class="demo-tip icon-tip"> </div><div>Click the buttons on datagrid toolbar to do crud actions.</div></div><table id="dg" title="My Users" class="easyui-datagrid" style="width:700px;height:250px"url="user/listUsers"toolbar="#toolbar" pagination="true"rownumbers="true" fitColumns="true" singleSelect="true"><thead><tr><th field="userId" width="50">UserId</th><th field="userName" width="50">UserName</th><th field=passWord width="50">PassWord</th><th field="enable" width="50">Enable</th></tr></thead></table><div id="toolbar"><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="newUser()">New User</a><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-edit" plain="true" onclick="editUser()">Edit User</a><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-remove" plain="true" onclick="removeUser()">Remove User</a><div><span>User ID:</span><input id="userId" style="line-height:26px;border:1px solid #ccc"><a href="javascript:void(0);" class="easyui-linkbutton" plain="true" onclick="doSearch()">Search</a></div></div><div id="dlg" class="easyui-dialog" style="width:400px;height:280px;padding:10px 20px"closed="true" buttons="#dlg-buttons"><div class="ftitle">User Information</div><form id="fm" method="post" novalidate><div class="fitem"><label>UserId:</label><input name="userId" class="easyui-validatebox" required="true"></div><div class="fitem"><label>UserName:</label><input name="userName" class="easyui-validatebox" required="true"></div><div class="fitem"><label>PassWord:</label><input name="passWord"></div><div class="fitem"><label>Enable:</label><input name="enable" class="easyui-validatebox" ></div></form></div><div id="dlg-buttons"><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-ok" onclick="saveUser()">Save</a><a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-cancel" onclick="javascript:$('#dlg').dialog('close')">Cancel</a></div></body></html>Controller：package com.yang.bishe.controller;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.ServletRequestUtils;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import com.yang.bishe.entity.Grid;import com.yang.bishe.entity.Json;import com.yang.bishe.entity.User;import com.yang.bishe.service.interfaces.IUserService;@Controller@RequestMapping("/user")public class UserController extends BaseController {@Autowiredprivate IUserService userService;@RequestMapping("/list")public ModelAndView goList(){return new ModelAndView("user/list");}@RequestMapping("/listUsers") public String listUser(HttpServletRequest request,HttpServletResponse response) throws Exception {page=ServletRequestUtils.getIntParameter(request, "page", 1);//默认值为1rows=ServletRequestUtils.getIntParameter(request, "rows", 0);String queryUserId=request.getParameter("queryUserId");//获取要查询的用户账号Grid grid = new Grid();String hql;List<User>users;if(queryUserId!=null){hql="from User as user where user.UserId like '%"+queryUserId+"%'";}else{hql="from User";}users=(List<User>)userService.find(hql, page, rows);grid.setTotal(userService.count("select count(*) from User"));grid.setRows(users);writeJson(grid,response);return null;}@RequestMapping("/addUser") public String addUser(User user,HttpServletRequest request,HttpServletResponse response) throws Exception{Json json = new Json();//用于向前端发送消息if(userService.getById(user.getUserId())!=null){json.setMsg("新建用户失败，用户已存在！");}else{userService.save(user);json.setMsg("新建用户成功！");json.setSuccess(true);}writeJson(json,response);return null;}@RequestMapping("/removeUser") public String removeUser(HttpServletRequest request,HttpServletResponse response) throws Exception{Json json = new Json();//用于向前端发送消息String userId=request.getParameter("id");try{userService.delete((User)userService.getById(userId));//不懂为啥要加上（User）才对。。json.setMsg("删除成功！");json.setSuccess(true);writeJson(json,response);return null;}catch (Exception e){json.setMsg("删除失败！"+e.getMessage());writeJson(json,response);return null;}}@RequestMapping("/updateUser") public String updateUser(User user,HttpServletResponse response) throws Exception{Json json = new Json();//用于向前端发送消息try{userService.update(user);json.setMsg("更新成功！");json.setSuccess(true);writeJson(json,response);return null;}catch(Exception e){json.setMsg("更新失败！"+e.getMessage());writeJson(json,response);return null;}}}其实listUser里面一些逻辑可以放到service上的，还没弄。。。它不同于旅游，那需要一个风景稍微漂亮的地方，
