Spring MVC 3.2 @ResponseBody interceptor

Question

In our application we are using JSON for request and response. The controller methods are annotated with @RequestBody(). The object being returned e.g. TransferResponse. I would

Answer 1

As Pavel Horal already mentioned, when postHandle() method is called, the response body object is already converted to JSON and written to response. You can try to write your own custom annotation and aspect in order to intercept the controller response body objects.

// custom annotation
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface MyCustomAnnotation {
}

// aspect
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class MyCustomAnnotationAspect {
    @Around(value = "@annotation(org.package.MyCustomAnnotation)", argNames = "pjp")
    public Object aroundAdvice(final ProceedingJoinPoint pjp) {
        // this is your response body
        Object responseBody = pjp.proceed();
        return responseBody;
    }
}

Enable support for AspectJ aspects using @EnableAspectJAutoProxy