java - 方法实现的切入点

Question

我创建了一个带有指向带注释方法的切入点的方面。我得到的 JoinPoint 是来自接口(interface)的方法声明，而不是方法实现。因此，当我想要获取带注释的方法参数时，我必须在接口(interface)中而不是在实现中添加注释。

@AfterReturning(value = "@annotation(pl.styall.scylla.security.authorization.acl.AclSecure) && @annotation(aclSecure)", argNames = "jp,aclSecure,retVal", returning = "retVal")
public void addObjectAndEntry(JoinPoint jp, AclSecure aclSecure,
        Object retVal) {
    System.out.println(jp.toLongString());
    MethodSignature signature = (MethodSignature) jp.getSignature();
    Method method = signature.getMethod();
    Annotation[][] methodAnnotations = method.getParameterAnnotations();

methodAnnotations 如果在方法实现中添加注释，则没有注释。正确的切入点是什么？

Answer 1

final String methodName = pjp.getSignature().getName();
final MethodSignature methodSignature = (MethodSignature)pjp.getSignature();
Method method = methodSignature.getMethod();
if (method.getDeclaringClass().isInterface()) {
    method = pjp.getTarget().getClass().getDeclaredMethod(methodName, method.getParameterTypes());    
}

来源:Spring AOP: how to get the annotations of the adviced method