大家好，又见面了，我是全栈君。
接一篇文章，今天上午实现了添加数据。以下是Jsp。里面主要是看newUser()和saveUser().注意这函数里的url，newUser()里面去掉url属性。还要注意的一个问题
<div id="toolbar"> <a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="newUser()">New User</a> <a href="#" class="easyui-linkbutton" iconCls="icon-edit" plain="true" onclick="editUser()">Edit User</a> <a href="#" class="easyui-linkbutton" iconCls="icon-remove" plain="true" onclick="removeUser()">Remove User</a> </div>
这里面,<a href=”#” >的#要改为javvascript:void(0); 这样才不会出现新建用户时找不到页面的情况。
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!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">
<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','New User');
$('#fm').form('clear');
url = 'user/addUser';
}
function editUser(){
var row = $('#dg').datagrid('getSelected');
if (row){
$('#dlg').dialog('open').dialog('setTitle','Edit User');
$('#fm').form('load',row);
url = 'update_user.php?id='+row.id; } } function saveUser(){ $('#fm').form('submit',{ 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'); if (row){ $.messager.confirm('Confirm','Are you sure you want to remove this user?
',function(r){ if (r){ $.post('remove_user.php',{id:row.id},function(result){ if (result.success){ $('#dg').datagrid('reload'); // reload the user data } else { $.messager.show({ // show error message title: 'Error', msg: result.msg }); } },'json'); } }); } } </script></head><body> <h2>Basic CRUD Application</h2> <div class="demo-info" style="margin-bottom:10px"> <div class="demo-tip icon-tip"> </div> <div>Click the buttons on datagrid toolbar to do crud actions.</div> </div> <table id="dg" title="My Users" class="easyui-datagrid" style="width:700px;height:250px" url="user/listUsers" toolbar="#toolbar" pagination="true" rownumbers="true" fitColumns="true" singleSelect="true"> <thead> <tr> <th field="userId" width="50">UserId</th> <th field="userName" width="50">UserName</th> <th field=passWord width="50">PassWord</th> <th field="enable" width="50">Enable</th> </tr> </thead> </table> <div id="toolbar"> <a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="newUser()">New User</a> <a href="#" class="easyui-linkbutton" iconCls="icon-edit" plain="true" onclick="editUser()">Edit User</a> <a href="#" class="easyui-linkbutton" iconCls="icon-remove" plain="true" onclick="removeUser()">Remove User</a> </div> <div id="dlg" class="easyui-dialog" style="width:400px;height:280px;padding:10px 20px" closed="true" buttons="#dlg-buttons"> <div class="ftitle">User Information</div> <form id="fm" method="post" novalidate> <div class="fitem"> <label>UserId:</label> <input name="UserId" class="easyui-validatebox" required="true"> </div> <div class="fitem"> <label>UserName:</label> <input name="UserName" class="easyui-validatebox" required="true"> </div> <div class="fitem"> <label>PassWord:</label> <input name="PassWord"> </div> <div class="fitem"> <label>Enable:</label> <input name="Enable" class="easyui-validatebox" > </div> </form> </div> <div id="dlg-buttons"> <a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-ok" onclick="saveUser()">Save</a> <a href="javascript:void(0);" class="easyui-linkbutton" iconCls="icon-cancel" onclick="javascript:$('#dlg').dialog('close')">Cancel</a> </div></body></html>
UserController：
package com.yang.bishe.controller;
import java.util.List;
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.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
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 {
@Autowired
private IUserService userService;
@RequestMapping("/list")
public ModelAndView goList(){
return new ModelAndView("user/list");
}
@RequestMapping("/listUsers")
public String listUser(HttpServletRequest request,
HttpServletResponse response) throws Exception {
// return "/views/index";
String hql="from User";
List<User>users=userService.find(hql);
// String result=userService.find(hql);
writeJson(users,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; } }
writeJson(json,response)
这里是把消息传给前端页面。在script里面的函数里success:funciont(result);的result就存有controller里的json消息。
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