自定义注解的应用

#创建ServiceLog类用来自定义注解
@Retention(RetentionPolicy.Runtime)
@Target(ElementType.METHOD)
public @interface ServiceLog {

}

#定义ServiceLogAspect类用来定义日志打印信息

@Component
@Aspect 
public class ServiceLogAspect {

   public ThreadLocal<Long> local = new ThreadLocal<Long>();
   
   @Pointcut("@annotation(com.test.XXX.ServiceLong)")
   public void pointCut() {
    
   } 

   @Before("pointCut()")
   public void before(JoinPoint point) {
    String methodName = point.getTarget().getClass().getName()+"."+point.getSignature().getName();
    local.set(System.currentTimeMillis());
   }

  @After("pointCut()")
   public void after(JoinPoint point) {
    long start = local.get();
    String methodName = point.getTarget().getClass().getName()+"."+point.getSignature().getName();
    System.out.println(System.currentTimeMillis()-start));
    }
   
  @AfterThrowing(pointcut="pointCut()",throwing="error")
   public void throwing(JoinPoint point,Throwable error) {
    System.out.println("error");
    }

}