Question

不确定出了什么问题，但是AOP似乎没有在弹簧启动（v1.1.6）的设置中工作。

@Configuration
@ComponentScan
@EnableJpaRepositories
@EnableTransactionManagement
@EnableAutoConfiguration
@EnableCaching
@EnableLoadTimeWeaving
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

在方面类

中

@Aspect
public class MyAspect {
  @AfterReturning(pointcut = "execution(private * com.myapp.service.MyService.test(..)) && args(str1,str2)", argNames = "str1,str2")
    public void advice(String str1, String str2) throws IOException {
        System.out.println("Advising after returning");
    }
}

在需要建议的服务类中

@Service
public class MyService {
  public void test(String str1, String str2) throws IOException {
    System.out.println("Test method in service");
    //rest of the implementation
  }
}

我也有像这样的META-INF / aop.xml

<!DOCTYPE aspectj PUBLIC "-//AspectJ//DTD//EN" "http://www.eclipse.org/aspectj/dtd/aspectj.dtd">
<aspectj>
    <weaver>
        <!-- only weave classes in our application-specific packages -->
        <include within="com.myapp.*"/>
    </weaver>

    <aspects>
        <!-- weave in just this aspect -->
        <aspect name="com.myapp.aspect.MyAspect"/>
    </aspects>

</aspectj>

当我使用-javaagent运行应用程序时：path / to / spring-instrument-4.1.0.RELEASE.jar

我在控制台上收到此消息

2014-09-05 08:42:12.500  INFO 65053 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
[AppClassLoader@58644d46] warning javax.* types are not being woven because the weaver option '-Xset:weaveJavaxPackages=true' has not been specified
2014-09-05 08:42:13.114  INFO 65053 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2014-09-05 08:42:13.156  INFO 65053 --- [           main] o.s.b.a.e.jmx.EndpointMBeanExporter      : Registering beans for JMX exposure on startup
[AppClassLoader@58644d46] error can't determine implemented interfaces of missing type org.springframework.security.config.http.SessionCreationPolicy
when weaving type org.springframework.boot.actuate.autoconfigure.ManagementServerProperties$Security
when weaving classes 
when weaving 
 [Xlint:cantFindType]
[AppClassLoader@58644d46] error can't determine implemented interfaces of missing type org.springframework.security.config.http.SessionCreationPolicy
when weaving type org.springframework.boot.actuate.autoconfigure.ManagementServerProperties$Security
when weaving classes 
when weaving 
 [Xlint:cantFindType]

虽然建议没有任何结果。它不会开火。

我做错了吗？

Answer 1

我遇到了同样的问题。在我的情况下，我不得不使用注释@Component注释我的方面类。

 @Aspect
 @Component
 public class MyAspect {
     ...
 }

以下链接有一个帮助我的弹簧启动AOP示例

https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples/spring-boot-sample-aop

Answer 2

在代码中添加以下更改，它应该可以工作。不需要创建aop.xml。这些更改会将外观添加到容器中并进行编织。

阅读-Enable Spring AOP or AspectJ

@Configuration
@ComponentScan
@EnableJpaRepositories
@EnableTransactionManagement
@EnableAutoConfiguration
@EnableCaching
@EnableAspectJAutoProxy -- Use this instead of @EnableLoadTimeWeaving

public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

@Aspect
 @Component/@Configurable -- Both of them work
 public class MyAspect {
     ...
 }

Answer 3

为了建议私人方法，您需要使用特权方面：

public privileged aspect MyAspect {
    // ...
}

但是AspectJ documentation说：

限制：注释样式不支持特权方面。

所以请使用原生语法，而不是@AspectJ样式。但是，在您这样做之前，请测试非特权，注释样式方面是否按预期使用公共方法工作，以排除编辑方面的其他原因。

Spring Boot AOP加载时间编织

3 个答案: