实现一个简单的struts2应用(实现登陆)

Posted on 2008-05-15 01:12 yxc 阅读(6977) 评论(1)  编辑  收藏 所属分类: Struts2MyEclipse

今天我用myeclipse做了一个关于struts2的小例子,和大家分享当然工程新建和服务器配置就不多说了!导入stuts2 的 jar包也不多说了!
首先配置web-inf下的web.xml

<?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"
>
 
<filter>
 
<filter-name>struts2</filter-name>
 
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>




右击src建立并配置struts.xml  

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd"
>
   
<struts>
   
<package name="struts2"  extends="struts-default">
   
<action name="login" class="com.test.action.LoginAction">
   
<result name="input">login2.jsp</result>
   
<result>/result.jsp</result>
   
<result name="failer">/login2.jsp</result>
   
</action>
   
</package>

</struts>



并在src目录下建立包com.test.action,里面新建一个java类LoginAction.java
/*
 *Coryright(c)2008 yxc & njust
 *All rights reserved.
*/
package com.test.action;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport{  //此处继承的父类ActionSupport就是struts2的一个典型应用
    private String username;
    
private String password;
    
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;
    }
    
public String execute() throws Exception
    {
        
if("hello".equals(this.getUsername().trim())&&"word".equals(this.getPassword().trim()))
        {
            
return "success";
        }
        
else
        {
            
this.addFieldError("username""username or password error!!!!");
            
return "failer";
        }
    }
    @Override
    
public void validate() {    //验证
       
        
if(null==this.getUsername()|| "".equals(this.getUsername().trim()))
        {
            
this.addFieldError("username""username request");
        }
        
if(null==this.getPassword()||"".equals(this.getPassword().trim()))
        {
            
this.addFieldError("password""password request");
        }
    }
   

}

在webroot下建立如下jsp文件,login2.jsp,result.jsp


login2.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding
="ISO-8859-1"%>
<%@ taglib prefix="s"  uri="/struts-tags" %>
<!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>
<s:form  action="login">
<s:textfield name="username" label="username"></s:textfield>
<s:password name="password" label="password"></s:password>
<s:submit name="submit"></s:submit>
</s:form>
</body>
</html>



result.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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 'result.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">
    
<!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    
-->
   
</head>
   
<body>
    username:${requestScope.username}
<br>
    password:${requestScope.password}
</body>
 
</html>


这样就实现了简单的固定用户登陆,username:hello   password:word  

实现界面







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