java - Spring AOP - @Around Error at::0 在切入点中正式未绑定(bind)

Question

我查看了其他问题，但没有一个适用。关于为什么 @Before 有效而 @Around 无效的任何想法？

在此处处理源代码: http://www.captaindebug.com/2013/07/auditing-spring-mvc-webapp-with-aspectj.html#.VhUeIxNViko

这工作正常:

@Before("execution(public String com.captaindebug.audit.controller.*Controller.*(..)) && @annotation(auditAnnotation)")
        public void auditScreen(JoinPoint joinPoint,Audit auditAnnotation) {...}

但是失败并出现错误:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcContentNegotiationManager': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut

@Around("execution(public String com.captaindebug.audit.controller.*Controller.*(..)) && @annotation(auditAnnotation)")
public void profile(ProceedingJoinPoint pjp, Audit auditAnnotation) throws Throwable {...)

这也不起作用:

    @Pointcut("execution(public String com.captaindebug.audit.controller.*Controller.*(..))")
    public void controllerMethods() {}

    @Around("controllerMethods()")
    public void profile(ProceedingJoinPoint pjp) throws Throwable {}

Answer 1

@Around 必须返回一些东西。

public Object profile(ProceedingJoinPoint pjp, Audit auditAnnotation) throws Throwable {
  ...
  Object retVal = pjp.proceed();
  ...
  return retVal;
}