Question

Have annotated Java class with several methods:

@CustomAnnotation
public class MyService {

public List<MyObject> getMyObjects(){
...
}

public SomeObject getSomeObject(){
...
}

}

I should to log field values of MyObject and SomeObject instances.

aspectj part,where MyService object got:

public void logg2(JoinPoint jp) {
    Object target = jp.getTarget();

}

target is MyService class,that holds methods.

How to get values of instance fields for MyObject and SomeObject,that are returned from methods in MyService class in Runtime?

Answer 1

@Around(value = "traceReturnedObjectsFields()")
public Object traceAnotherOne(ProceedingJoinPoint jp) throws Throwable {
    Object res = null;
    res = jp.proceed();
    if (res == null)
        return res;
    Class<?> c1 = res.getClass();
    Field[] fields = c1.getDeclaredFields();
    AccessibleObject.setAccessible(fields, true);
    for (Field field : fields) {
        if (!Modifier.isStatic(field.getModifiers())) {
            System.out.println(field + " = " + field.get(res));
        }
    }
    return res;
}