I have an aspect usable with an annotation:
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface DumpToFile {
}
And the join point:
@Aspect
@Component
public class DumpToFileAspect {
@Around("@annotation(DumpToFile)")
public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
...
// I likte to read out a parameter from the annotation...
Object proceed = joinPoint.proceed();
...
return proceed;
}
}
I can use the aspect successfully on a method with @DumpToFile; however, I would like to pass a parameter to the annotation and retrieve it's value inside my aspect.
Eg. @DumpToFile(fileName="mydump"). Can anybody show me how to do that?
You should be able to pass the annotation interface to the interceptor method. I haven't tried myself though.
Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface DumpToFile {
String fileName() default "default value";
}
In DumpToFileAspect -
@Aspect
@Component
public class DumpToFileAspect {
@Around("@annotation(dtf)")
public Object logExecutionTime(ProceedingJoinPoint joinPoint, DumpToFile dtf) throws Throwable {
...
// I likte to read out a parameter from the annotation...
System.out.println(dtf.fileName); // will print "fileName"
Object proceed = joinPoint.proceed();
...
return proceed;
}
}