Spring AspectJ从ProcedingJoinPoint获取方法注释

Question

我有一个方面，处理所有有自定义注释的方法。

注释有一个枚举参数，我必须在方面中获得值：

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Monitored {
    MonitorSystem monitorSystem();
}

@Aspect
@Component
public class MonitorAspect {

    @Around("@annotation(com.company.project.monitor.aspect.Monitored)")
    public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
        MethodSignature signature = (MethodSignature) pjp.getSignature();
        MonitorSystem monitorSystem = signature.getMethod().getAnnotation(Monitored.class).monitorSystem();
        ...
    }
}

@Component
public class SomeBean {
   @Monitored(monitorSystem=MonitorSystem.ABC) 
   public String someMethod(String name){}
}

@Component
public class SomeBeanImpl implements SomeBeanInterface {
   @Monitored(monitorSystem=MonitorSystem.ABC) 
   public String someMethod(String name){}
}

有没有办法从ProcedingJoinPoint获得实现方法的签名？

Answer 1

设法用：

@Aspect
@Component
public class MonitorAspect {

    @Around("@annotation(com.company.project.monitor.aspect.Monitored)")
    public Object monitor(ProceedingJoinPoint pjp) throws Throwable {
        MethodSignature signature = (MethodSignature) pjp.getSignature();
        Method method = pjp.getTarget()
           .getClass()
           .getMethod(signature.getMethod().getName(),     
                      signature.getMethod().getParameterTypes());
        Monitored monitored = method.getAnnotation(Monitored.class);
        ...
    }
}