JAVA自定义注解

JAVA自定义注解

1.定义一个接口@interface

这几个注解一定要加上

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface Timing {

}

2.写自定义注解的实现方法

@Aspect
@Component
public class TimingAspect {
	
	@Autowired
	protected RedisService redisService;
	
	private static final Logger logger = LoggerFactory.getLogger(TimingAspect.class);
	
	//切入点
    @Pointcut(value = "@annotation(com.lydsoft.eip.mapp.common.annotation.Timing)")
    private void pointcut() {
 
    }
    
	@Around(value = "pointcut()")
    public void around(ProceedingJoinPoint point) throws Throwable {
    	//拦截的类名
        String className = point.getTarget().getClass().getSimpleName();
        className = className.substring(0, className.indexOf("$"));
        //拦截的方法
        String methodName = ((MethodSignature) point.getSignature()).getMethod().getName();
        logger.info(className + "." + methodName);
        // 执行方法
		point.proceed();
    }
	
}