使用Spring的注解方式注入Struts所管理的action

因为集成SSH框架时，常容易出错，所以一般要加上log4j日志文件，来显示错误信息（log4j.properties放在源文件目录下，log4j.jar放在WEB-INF/lib目录下）

首先要加载Spring，一般有三种加载方式：

一.插件方式，在struts启动时启动spring

在struts配置文件struts-config.xml中增加如下配置：
<plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
<set-property property="contextConfigLocation"
value="classpath*:applicationContext*.xml" />
</plug-in>

二.Servelt方式或者Listener，在web容器启动时启动

在web.xml中：

<!-- 配置全局参数，用Servlet或者Listener 启动要用到 -->

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:applicationContext*.xml</param-value>
</context-param>

<!-- 通过Listener启动Spring -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>

<!-- 通过Servlet启动Spring -->
<servlet>
<servlet-name>startspring</servlet-name> <servlet-class>org.springframework.web.context.ContextLoaderServlet</servlet-class>
<load-on-startup>0</load-on-startup>
</servlet>

然后需要在struts-config.xml中配置（这里要注意代码的顺序）：
<!-- 将action交给spring管理 -->
<controller>
<set-property property="processorClass"
value="org.springframework.web.struts.DelegatingRequestProcessor" />
</controller>
<!-- end -->

然后再applicationContext中配置:
<?xml version="1.0" encoding="UTF-8"?>
<!-- 首先要导入相关命名空间 -->
<beans xmlns="http://www.springframework.org/schema/beans"
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"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
<!-- 开启切面代码 -->
<aop:aspectj-autoproxy />
<!-- end -->
<!-- 通过注解方式自动扫描需交给Sping管理的Bean -->
<context:component-scan base-package="com.aptech.jb.epet.dao" />
<context:component-scan base-package="com.aptech.jb.epet.biz" />
<context:component-scan
base-package="com.aptech.jb.epet.aop.aspects" />
<!-- end -->
<!-- 将hibernate数据源注入sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
</bean>
<!-- end -->
<!-- 将sessionFactory注入Spring事务管理类 -->
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- end -->

<!-- 管理Struts的action -->
<bean name="/Login" class="com.aptech.jb.epet.web.action.LoginAction" />
<bean name="/PetInfo" class="com.aptech.jb.epet.web.action.PetInfoAction" />
<bean name="/EditPetInfo" class="com.aptech.jb.epet.web.action.EditPetInfoAction" />
<bean name="/AllPets" class="com.aptech.jb.epet.web.action.AllPetsAction" />
<bean name="/Adopt" class="com.aptech.jb.epet.web.action.AdoptAction" />
<bean name="/Training" class="com.aptech.jb.epet.web.action.TrainingAction" />
<bean name="/AddDiary" class="com.aptech.jb.epet.web.action.AddDiaryAction" />
<!-- end -->
<!-- 开启Sping注释管理事务功能，指定事务管理的Bean -->
<tx:annotation-driven transaction-manager="txManager" />
<!-- end -->
</beans>

这里要注意bean里的name值要和struts里的path 相同

最后在相关action中注入依赖的biz,这里采用注解的方式

public class LoginAction extends Action {
@Resource
private PetInfoBiz petInfoBiz;

public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
..........省略

}

OK!