How could convert/implement spring aop function by annotation - spring-boot

Question

I want to log time spent to log file when invoke some service methods , now I implement it by AOP, e.g.
#Around("execution(* sample..TaskService.*(..))")
public Object aroundStat(ProceedingJoinPoint joinPoint) throws Throwable {
long start = System.currentTimeMillis();
Object proceed = joinPoint.proceed();
long end = System.currentTimeMillis();
String methodName = joinPoint.getSignature().getName();
log.info("{} taken time: {} ms",methodName,(end-start));
return proceed;
}
but I want to know how could implement it by using Annotation just like #Trasactional, e.g.
#Service
#TimeLogging
public class TaskService {
#TimeLogging
List<TaskStatDTO> taskStatusStat(String name){
//...
}
List<TaskStatDTO> finishedTaskStat(String name){
//...
}
//...
}
Could I implement some class and override some method?

Answer 1

don't use system time for measure time execution , use StopWatch from spring or apache. see good example - Measure execution time in Java – Spring StopWatch Example and spring api StopWatch
long start = System.currentTimeMillis();
long end = System.currentTimeMillis();
(end-start)
change to
StopWatch watch = new StopWatch();
watch.start();
..... execution
watch.stop();
watch.getTotalTimeMillis()
instead of
#Around("execution(* sample..TaskService.*(..))")
use
#Around("execution(* sample..TaskService.(..) && #annotation( sample...TimeLogging)")
see Advice parameters
better : see Combining pointcut expressions and Sharing common pointcut definitions
#Pointcut("execution(#annotation(* sample...TimeLogging)")
private void withTimeExecutionLayer() {}
#Pointcut("execution(public *sample..service.* *(..))")
privatr void inServiceLayer() {}
#Pointcut("inServiceLayer() && withTimeExecutionLayer()")
private void auditTimeExecutionServiceLayer() {}