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我现在正试图在我的 Spring 项目上启用 AOP。我想在@RequestMapping 完成后执行代码（会话清理）。这是我的applicationContext.xml（只需加载引用的资源

<?xml version="1.0" encoding="UTF-8" standalone="no"?><beans 
xmlns="http://www.springframework.org/schema/beans"  
xmlns:aop="http://www.springframework.org/schema/aop"  
xmlns:context="http://www.springframework.org/schema/context"  
xmlns:jee="http://www.springframework.org/schema/jee" 
xmlns:tx="http://www.springframework.org/schema/tx" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.springframework.org/schema/beans       
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-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/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-2.5.xsd">

    <!-- ******************************************************************** -->
    <!-- Include context files from different layers -->
    <!-- ******************************************************************** -->
    <import resource="classpath:appname-security-context.xml"/>
    <import resource="classpath:appname-service-context.xml"/>
    <import resource="classpath:appname-dao-context.xml"/>

</beans>

安全上下文：

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

<http auto-config="true">
<intercept-url pattern='/pages/login.jsp' />
<intercept-url pattern="/secure/*" access="IS_AUTHENTICATED_REMEMBERED" />
<intercept-url pattern="/admin/**" access="ROLE_ADMIN" />
<form-login login-page="/pages/login.jsp" authentication-failure-url="/pages/login.jsp?login_error=true"  /> 
        <logout logout-success-url="/pages/logout-redirect.jsp" invalidate-session="true" />
        <remember-me key="appnameRMKey" user-service-ref="userDetailsService" />
    </http>
    <authentication-manager alias="authenticationManager" >
    <authentication-provider user-service-ref='userDetailsService' >
        <password-encoder hash="plaintext"/>
    </authentication-provider>
    </authentication-manager>

    <beans:bean id="userDetailsService" class="org.springframework.security.core.userdetails.jdbc.JdbcDaoImpl">
        <beans:property name="rolePrefix" value="ROLE_" />
        <beans:property name="dataSource" ref="springSecurityDataSource" />
        <beans:property name="usersByUsernameQuery" value="SELECT username,password,enabled FROM Users WHERE username = ?" />
        <beans:property name="authoritiesByUsernameQuery" value="SELECT u.username, a.authorityname FROM Users u JOIN Users_Authorities ua on u.id = ua.user_id JOIN Authorities a on ua.authorities_id = a.id WHERE u.username = ?" />
    </beans:bean>   

    <!-- ******************************************************************** -->
    <!-- Apply security for all beans where security was set -->
    <!-- ******************************************************************** -->

    <global-method-security jsr250-annotations="enabled" proxy-target-class = "true" secured-annotations="enabled">
        <protect-pointcut expression="execution(* appname.UsersDAO.*(..))" access="IS_AUTHENTICATED_REMEMBERED"/>
        <protect-pointcut expression="execution(* appname.AuthoritiesDAO.*(..))" access="IS_AUTHENTICATED_REMEMBERED"/>
    </global-method-security>
</beans:beans>

我的服务上下文：

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:jee="http://www.springframework.org/schema/jee" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:lang="http://www.springframework.org/schema/lang"
      xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-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/jee 
        http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
        http://www.springframework.org/schema/lang
        http://www.springframework.org/schema/lang/spring-lang-3.0.xsd">
    <!-- ******************************************************************** -->
    <!-- Scan for service layer annotated beans -->
    <!-- ******************************************************************** -->
<context:component-scan base-package="appname" scoped-proxy="interfaces" />
<aop:config  proxy-target-class="true">
    </aop:config>
    <aop:aspectj-autoproxy proxy-target-class="true">
    </aop:aspectj-autoproxy>
    <!-- ******************************************************************** -->
    <!-- Mark bean transactions as annotation driven -->
    <!-- ******************************************************************** -->
    <tx:annotation-driven transaction-manager="transactionManager" />

</beans>

我的网络上下文：（由于简短而省略了 Bean 定义！！）

<mvc:annotation-driven/>
    <mvc:default-servlet-handler/>    
    <tx:annotation-driven transaction-manager="transactionManager" />
    <bean id="multipartResolver" class="org.skyway.spring.util.web.binary.ModelBindingMultipartResolver" />
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
    <bean id="streamedBinaryContentView" class="org.skyway.spring.util.web.binary.ModelAttributeStreamer" />
    <bean id="beanNameViewResolver" class="org.springframework.web.servlet.view.BeanNameViewResolver" />
    <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/pages/" />
    </bean>
    <bean id="iPhoneUserAgentViewResolver" class="org.skyway.spring.util.viewresolution.UserAgentViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="agentSubstring" value="iPhone" />
    <property name="prefix" value="/WEB-INF/iphone/" />
    <property name="order" value="0" />
    </bean><bean id="webInfViewResolver" class="org.skyway.spring.util.viewresolution.AbsolutePathViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="order" value="-1" />
    </bean>
    <context:component-scan base-package="appname" scoped-proxy="interfaces" />
    <aop:config  proxy-target-class="true">
    </aop:config>
    <aop:aspectj-autoproxy proxy-target-class="true">
    </aop:aspectj-autoproxy>
    </beans>

这是方面类的接口

package appname;
import it.pstmarche.model.HibernateSessionFactory;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;
@Component
@Aspect
public interface SessionInterceptor {

@Pointcut("execution(public * appname.ImplantManager+.*(..))")
public void pc() ;

@Before("pc()")
public void print();
}

实现很简单 @Before("pc()") public void print(){ System.out.println("About to make call to print Hello World" }

我还尝试了其他一些表达方式，例如：

  • @Pointcut("执行(@org.springframework.web.bind.annotation.RequestMapping public * appname.*(..))")
  • 和许多其他人

没有运气。我开始认为问题不在于表达式（我已经尝试了大约 10-15 种类型……），而是上下文中没有考虑到的类。

对于答案，请考虑：

  • 例如，名称 appname 显然是
  • 插入 aop:config 和 aop:aspectj-autoproxy 只是一个尝试，因为我还在其他线程中读到，必须在 applicationContext 加载的每个文件中启用配置。我也试过只插入一个但没有结果
  • 控制器具有带注释的接口+带注释的实现。我也尝试过不注释界面或完全删除而没有结果

有什么帮助吗？:)

编辑：作为对 axtavt 的回应 .. 对不起，我忘了添加我的 web.xml，这是其中的一部分

<servlet>
<description>context-servlet</description>
    <servlet-name>appname Servlet</servlet-name>
    <servlet-class>
        org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:appname-web-context.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

我通过 web-context.xml 文件正确加载了 contextConfigLocation。抱歉我忘记了:-(

EDIT2：我在axtavt的建议下得到了错误的答案！谢谢！

4

1 回答 1

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AOP 是在每个上下文的基础上配置的。

您有两个上下文 - 根 Web 应用程序上下文（applicationContext.xml包含导入其中的配置文件）和应用程序上下文DispatcherServlet，其中声明了控制器 bean。

因此，为了将方面应用于控制器，您需要添加<aop:aspectj-autoproxy>到特定于 servlet 的上下文中。

另请注意，您不应该<context:component-scan>在不同的上下文中使用相同的基础包，请参阅@Service areConstructed 两次。

于 2012-04-20T10:17:50.047 回答