#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");    }}