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struts框架编写的用户登陆代码

2014-07-23 10:55 204 查看

1、index.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<%@ taglib uri="/struts-tags" prefix="x"%>

<!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>

<form action="login.action" method="post">

    用户名:<input type="text" name="username"><br/>

    密码:<input type="password" name="password"><br/>

    <input type="submit" value="login">

    </form>

</body>

</html>

2、web.xml文件

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.4"

xmlns="http://java.sun.com/xml/ns/j2ee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

</welcome-file-list>

<filter>

  <filter-name>struts2</filter-name>

  <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

</filter>

<filter-mapping>

  <filter-name>struts2</filter-name>

  <url-pattern>/*</url-pattern>

</filter-mapping>

</web-app>

3、struts.xml文件

<?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>

<constant name="struts.i18n.encoding" value="UTF-8" />

<constant name="struts.ui.theme" value="simple"></constant>

<package name="login" extends="struts-default" namespace="/">

  <action name="login" class="com.why.actions.LoginAction" method="f1">

   <result name="success" type="dispatcher">

    /wel.jsp

   </result>

   <result name="error" type="dispatcher">

    /err.jsp

   </result>

  </action>

</package>

</struts>

4、LoginAction.java文件

package com.why.actions;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport {

private static final long serialVersionUID = 5362742299006067572L;

private String username;

private String password;

public String f1()

{

  if("why".equals(username)&&"123".equals(password)){

   return "success";

  }else{

   return "error";

  }

}

public String getUsername() {

  return username;

}

public void setUsername(String username) {

  this.username = username;

}

public String getPassword() {

  return password;

}

public void setPassword(String password) {

  this.password = password;

}

}

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