struts2+jquery 实现ajax登陆

最新推荐文章于 2021-08-05 19:32:05 发布

转载最新推荐文章于 2021-08-05 19:32:05 发布 · 66 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/felix-/p/4319793.html

本文介绍了一个使用 Struts2 框架实现的简单登录示例，包括前端页面设计、后端 Java 代码编写及 JSON 数据交互过程。

一、新建一个web项目：test,配置好struts2的环境(详细配置见：http://www.cnblogs.com/wuweidu/p/3841297.html)

导入Jquery的js文件到项目

二、在com.action包下，新建一个loginAction.java

loginAction.java的代码如下

package com.action;

import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ParentPackage; import org.apache.struts2.convention.annotation.Result; import org.apache.struts2.convention.annotation.Results; import com.opensymphony.xwork2.ActionSupport; @Action("login") @ParentPackage(value = "json-default") @Results({ @Result(name = "success", type = "json", params = { "data", "flag" }), }) public class LoginAction extends ActionSupport { /** * */ private static final long serialVersionUID = 1751244794407005783L; private String flag; private String username; private String password; public String execute() { try { if (getUsername() == null || getUsername().trim().equals("")) { setFlag("用户名不能为空"); return SUCCESS; } else if (getPassword() == null || getPassword().trim().equals("")) { setFlag("密码不能为空"); return SUCCESS; } else if (getUsername().trim().equals("admin") && getPassword().equals("admin")) { setFlag("登陆成功"); return SUCCESS; } else { setFlag("用户名或密码错误"); return SUCCESS; } } catch (Exception e) { e.printStackTrace(); setFlag("登陆异常"); return SUCCESS; } } public String getFlag() { return flag; } public void setFlag(String flag) { this.flag = flag; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } }

三、在WebRoot目录下新建index.jsp和success.jsp

index.jsp登陆界面 success.jsp登陆成功后跳转的界面

index.jsp内容如下

<%@ page language="java" import="java.util.*" 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>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="./resource/js/jquery.min.js"></script>
</head>
<script type="text/javascript"> $(document).ready(function() { $(".loginButton").click(function() { var name = $("#username").val();//获取登陆用户名 var password = $("#password").val(); //获取登陆密码 $.post("login", { username : name, password : password }, callback, "json"); }); function callback(data) { var value=data.flag; if(value=="登陆成功"){ location.href="./success.jsp"; }else{
 alert(value); } }); </script> <body> <input name="username" id="username" type="text" /> <input name="password" id="password" type="password" /> <button class="loginButton" class="btn btn-inverse">登陆</button> </body> </html>