关于struts2和spring整合的问题

以前培训的时候讲到过这个，整合正常的做法是导入struts2-spring-plugin.jar包，然后在struts.xml里面配置action标签的class属性时直接写创建action类的bean id的名字,而不是直接写类的路径，当然new action类是通过spring来创建bean的(不管是注解方式还是xml方式)，但是实验结果是就算不导入struts2-spring-plugin.jar包,struts.xml里面配置action标签的class属性时直接写类的路径，并且也不用spring来new action类也是可以将struts2和spring整合起来的，下面我贴下一个实验代码：
(没有导入struts2-spring-plugin.jar)

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">

struts2.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">

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


 <action name="user" class="com.niit.test.UserAction" >
        <result name="res">/res.jsp</result>
    </action>
</package>

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

index.jsp

struts2
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter

struts2
/*



contextConfigLocation

classpath:applicationContext.xml



org.springframework.web.context.ContextLoaderListener

index.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

111

res.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

不导入struts2-spring-plugin.jar包这个是必须导入的不导入肯定注入不了

如果你是用eclipse测试的建议多clean几次然后再试

你在acton的某个方法输出下userService 一定为null

首先struts2 new一个，然后交给struts2-spring-plugin 注入依赖

userService不是有@Resource注解么，
猜想Spring扫到这个注解了，然后也会注入其实现，
具体该看看Spring如何实现component-scan的源代码吧