Spring整合Struts2簡單示例

Spring整合Struts2簡單示例

1.SpringIntegrateStruts2Demo項目結構：

2.LoginAction.java源代碼：

package com.xqh.action;

import com.opensymphony.xwork2.ActionSupport;
import com.xqh.service.MyService;

public class LoginAction extends ActionSupport{
	
	//下面是用於封裝用戶請求參數的兩個屬性
	private String username;
	private String password;
	//用於封裝處理結果的屬性
	private String tip;
	//系統所用的業務邏輯組件
	private MyService ms;
	//設置注入業務邏輯組件所必需的setter方法
	public void setMs(MyService ms)
	{
		this.ms = ms;
	}
	//username屬性的setter和getter方法
	public void setUsername(String username)
	{
		this.username = username;
	}
	public String getUsername()
	{
		return this.username;
	}
	//password屬性所必需的setter和getter方法
	public void setPassword(String password)
	{
		this.password = password;
	}
	public String getPassword()
	{
		return this.password;
	}
	//tip屬性的getter和setter方法
	public void setTip(String tip)
	{
		this.tip = tip;
	}
	public String getTip()
	{
		return this.tip;
	}
	//處理用戶請求的execute方法
	public String execute() throws Exception
	{
		//調用業務邏輯組件的valid方法來
		//驗證用戶輸入的用戶名和密碼是否正確
		if (ms.valid(getUsername(), getPassword()))
		{
			setTip("Spring與Struts2整合成功！");
			return SUCCESS;
		}
		else
		{
			return ERROR;
		}
	}
}

3.MyService.java源代碼：

package com.xqh.service;

public interface MyService {
	public boolean valid(String username, String pass);
}

4.MyServiceImpl.java源代碼：

package com.xqh.service;

public class MyServiceImpl implements MyService{

	@Override
	public boolean valid(String username, String pass) {
		if (username.equals("xqh") && pass.equals("123"))
			return true;
		return false;
	}
	
}

5.struts.xml配置文件：

<?xml version="1.0" encoding="GBK"?>
<!-- 指定Struts2配置文件的DTD信息 -->
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
	"http://struts.apache.org/dtds/struts-2.0.dtd">
<!-- Struts2配置文件的根元素 -->
<struts>
	<!-- 配置了系列常量 -->
	<constant name="struts.i18n.encoding" value="GBK"/>	
	<package name="login" extends="struts-default">
		<!-- 定義處理用戶請求的Action，該Action的class屬性不是實際處理類
			, 而是Spring容器中的Bean實例-->
		<action name="login" class="loginAction">
			<!-- 爲兩個邏輯視圖配置視圖頁面 -->
			<result name="error">/error.jsp</result>
			<result name="success">/welcome.jsp</result>
		</action>
		<!-- 讓用戶直接訪問該應用時列出所有視圖頁面 -->
		<action name="">
			<result>.</result>
		</action>
	</package>
</struts>

6.applicationContext.xml配置文件：

<?xml version="1.0" encoding="GBK"?>
<!-- 指定Spring配置文件的DTD信息 -->
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
	"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<!-- Spring配置文件的根元素 -->
<beans>
	<!-- 定義一個業務邏輯組件，實現類爲com.xqh.service.MyServiceImpl -->
	<bean id="myService" class="com.xqh.service.MyServiceImpl"/>
	<!-- 讓Spring管理的Action實例 -->
	<bean id="loginAction" class="com.xqh.action.LoginAction"
		scope="prototype">
		<!-- 依賴注入業務邏輯組件 -->
		<property name="ms" ref="myService"/>
	</bean>
</beans>

注意：當Spring容器管理Struts2的Action時，由於每個Action對應一次用戶請求，且封裝了該請求的請求百狀態信息，所以不應該將Action配置成單例模式，因些必須指定scope屬性，該屬性值可指定爲prototype和request兩種

7.web.xml配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>
  <!-- 使用ContextLoaderListener初始化Spring容器 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>
	<!-- 定義Struts2的FilterDispathcer的Filter -->
	<filter>
		<filter-name>struts2</filter-name>
		<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
	</filter>
	<!-- FilterDispatcher用來初始化Struts2並且處理所有的WEB請求。 -->
	<filter-mapping>
		<filter-name>struts2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>

8.login.jsp源代碼：

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
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>登錄頁面</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>
    <form action="login.action" method="post">
    <table align="center">
    <caption><h3>用戶登錄</h3></caption>
        <tr>
            <td>用戶名：<input type="text" name="username"/></td>
        </tr>
        <tr>
            <td>密  碼：<input type="text" name="password"/></td>
        </tr>
        <tr align="center">
            <td colspan="2"><input type="submit" value="登錄"/><input type="reset" value="重填" /></td>
        </tr>
    </table>
</form>
  </body>
</html>

9.error.jsp源代碼：

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
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>錯誤頁面</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>
   	登錄失敗！
  </body>
</html>

10.welcome.jsp源代碼：

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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>成功頁面</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>
   	您已經登錄!<br/>
		<s:property value="tip"/>
  </body>
</html>