struts存取session和application值

1、index.jsp

<%@ 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">
<title>Insert title here</title>
</head>
<body>
	<h3>登录页面</h3>
	<form action="myLogin.action" method="post">
		<table>
			<tr>
				<td>用户名：</td>
				<td><input type="text" name="uname" /></td>
			</tr>
			<tr>
				<td>密码：</td>
				<td><input type="password" name="upwd" /></td>
			</tr>
			<tr>
				<td><input type="submit" value="提交" /></td>
				<td><input type="reset" value="重置" /></td>
			</tr>
		</table>
	</form>
</body>
</html>

2、struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
        "http://struts.apache.org/dtds/struts-2.5.dtd">


<struts>
	<constant name="struts.devMode" value="true"/>
    <package name="default" namespace="/" extends="struts-default">
    	<action name="myLogin" class="action.MyLoginAction">
    		<result>
    			/myLoginSuccess.jsp
    		</result>
    		<result name="fail">/myLoginFail.jsp</result>
    	</action>
    </package>
</struts>

3、model包User.java

package model;

public class User {
	public String uname;
	public String Upwd;
	public String getUname() {
		return uname;
	}
	public void setUname(String uname) {
		this.uname = uname;
	}
	public String getUpwd() {
		return Upwd;
	}
	public void setUpwd(String upwd) {
		Upwd = upwd;
	}
	
}

4、action包MyLoginAction.java

package action;

import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

import model.User;

public class MyLoginAction extends ActionSupport implements ModelDriven<User>{
	private User u = new User();
	
	private HttpServletRequest request;
	private HttpSession session;
	private ServletContext application;
	public MyLoginAction() {
		request = ServletActionContext.getRequest();
		session = request.getSession();
		application = ServletActionContext.getServletContext();
	}
	public String execute() {
		if("yjw".equals(u.getUname())
				&&"123".equals(u.getUpwd())) {
			session.setAttribute("usersession", u);
			application.setAttribute("userapplication", u);
			return SUCCESS;
		}else{
			request.setAttribute("userrequest", u);
			return "fail";
		}
	}
	@Override
	public User getModel() {
		return u;
	}
	
}

5、myLoginSuccess.jsp

<%@ 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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
从session中取值<br>
用户名：${sessionScope.usersession.uname}<br>
密码：${sessionScope.usersession.upwd}<br>
从application中取值<br>
用户名：${applicationScope.userapplication.uname}<br>
密码：${applicationScope.userapplication.upwd}
</body>
</html>

6、myLoginFail.jsp

<%@ 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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
从request中取值<br>
用户名：${requestScope.userrequest.uname}<br>
密码：${requestScope.userrequest.upwd}
</body>
</html>

struts存取session和application值

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