struts2登录印证

2012-11-21

struts2登录验证自己刚开始学习struts2的基础知识，对struts1有点了解。自己利用struts2标签弄了简单的登录

struts2登录验证
    自己刚开始学习struts2的基础知识，对struts1有点了解。自己利用struts2标签弄了简单的登录验证。自己也是给自己留个记录吧。
    首先是登录的index.jsp页面代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="z" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <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">

</head>
<body>
<z:form action="login" method="post">
<z:textfield name="username" label="用户名" />
<z:password name="password" label="密码"/>
<z:submit value="登录" align="left"/>
</z:form>
   </body>
</html>
自己在建立相应的登录成功和失败页面，success.jsp和error.jsp。
在struts2中建立相应的action类：
package com.gb.denglu;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class loginaction extends ActionSupport{
        private String username;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}

private String password;

public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String execute() throws Exception{
if(username.equalsIgnoreCase("gb")&& password.equalsIgnoreCase("1")){

ActionContext.getContext().getSession().put("name", username);

return "success";
}else {
return "error";
}
}
public void validate(){
if(username==null || username.trim().equals("")){

addFieldError("username","姓名不能为空");
}
if(password==null || password.trim().equals("")){
addFieldError("password","密码不能为空 ");
}
}

下面是struts.xml的配置文件信息；
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="cn.gb.struts2" namespace="/test" extends="struts-default">
<action name="hello" />

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