Spring AOP pointcut with one certain argument

问题

I need to create an aspect that I find hard to describe, so let me point out the ideas:

any method within the package (or any subpackage) of com.x.y...
one method argument is an implementation of an interface javax.portlet.PortletRequest
there may me more arguments in the method
they may be in any order

I need a pointcut and an "around" advice with the PortletRequest given

Currently I have smt like:

@Pointcut("execution(* com.x.y..*.*(PortletRequest,..)) && args(request,..)")
public void thePointcut(PortletRequest request) {
}


@Around("thePointcut(request)")
    public Object theAdvice(ProceedingJoinPoint joinPoint, PortletRequest request) {
...

and receive an error:

ERROR 10:47:27.159 [ContainerBackgroundProcessor[StandardEngine[Catalina]]] o.s.web.portlet.DispatcherPortlet - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet. mvc.HttpRequestHandlerAdapter': Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: w arning no match for this type name: PortletRequest [Xlint:invalidAbsoluteTypeName]

Any help highly appreciated

Kind regards, Dan

UPDATE the method i'm trying to intercept is:

in public class com.x.y.MainClass :

public String mainRender(Model model, RenderRequest request) throws SystemException

in public class com.x.y.asd.HelpClass:

public final void helpAction(ActionRequest request, ActionResponse response, Model model)

Of cource, I want to get the argument that implements PortletRequest, that is RenderRequest from the first method, and ActionRequest from the second.

Regards, Dan

回答1:

As the error suggests you need to use the fully qualified name of the PortletRequest in the point cut expression - since it is a string the import context is not available during the time of evaluation of the expression.

@Pointcut("execution(* com.x.y..*.*(javax.portlet.PortletRequest.PortletRequest,..)) && args(request,..)")
public void thePointcut(PortletRequest request) {
}

Since you already are selecting the type in the args construct you don't need that in the signature. The following should also work.

@Pointcut("execution(* com.x.y..*.*(..)) && args(request,..)")
public void thePointcut(PortletRequest request) {
}

It is a and boolean operation - i.e., it needs to match the method pattern as well as the args construct.

来源：https://stackoverflow.com/questions/7806013/spring-aop-pointcut-with-one-certain-argument

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java

Spring

aop