Re: [aspectj-users] Around advice problem with java.io.InputStream

[Sina <sina.golesorkhi@xxxxxxxxx>]

Hi Andy,

thanks for the help. The problem was not with the advice but with the return value of methodExecution in my ExceptionHandler Aspect. 

(I'd forgotten that the print method needed a different return value other than usual methods on the client side in order to process the response. Unfortunately I hadn't included that in my ExceptionHandler)

Btw thanks for the time.

Cheers,

Sina

On Aug 19, 2013, at 9:26 PM, Andy Clement <andrew.clement@xxxxxxxxx> wrote:

I presume a showWeaveInfo shows the advice is applying ok, and you are just saying the advice is not returning or it is returning null? Exception occuring in the advice?

Sometimes I recommend switching to code style which has much better diagnostics - it may quickly indicate the problem to you which you can then choose to fix in the annotation style.

cheers,

Andy

On 19 August 2013 05:15, Sina <sina.golesorkhi@xxxxxxxxx> wrote:

Hi there,

I'm using AspectJ along with Struts 2.x . 

In one of my action classes I have a private field of type java.io.InputStream which is used to sent back some data (generated by net.sf.jasperreports.engine.JasperRunManager.runReportToPdf method) to the client.

When using the @Around advice (for exception handling manners) the inputstream is not sent back to the client in response, hence the PDF file is not generated.

public class SomeAction {

………

private InputStream inputStream;

public String print() {

….

setInputStream(net.sf.jasperreports.engine.JasperRunManager.runReportToPdf(….));

}

}

@Around("execution ……… ")

public String methodExecution(CustomAction action, ProceedingJoinPoint thisJoinPoint) throws Throwable {

try {

thisJoinPoint.proceed();

} catch (Exception e) {

…...

}

The method is working properly with @Before but @Around.

P.S. the aspect is working flawlessly and of course I've omitted the advice declaration for the sake of a clarity and abstraction here.

Any idea?

Cheers,

Sina 

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