主要依赖

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<!--切面依赖 -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjweaver</artifactId>
		</dependency>

定义注解接口

/**
 * 次数限制注解， 作用在接口方法上
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface LimitCount {
	/** 资源名称，用于描述接口功能 */
	String name() default "";
	/**  资源 key */
	String key() default "";
	/** key prefix */
	String prefix() default "";
	/** 时间的，单位秒, 默认60s过期 */
	int period() default 60;
	/** 限制访问次数,默认3次  */
	int count() default 3;
}

定义切面

@Slf4j
@Aspect
@Component
public class LimitCountAspect {
	@Pointcut("@annotation(zzc.learn.springboot.annodemo.annotation.LimitCount)")
	public void pointcut() {
		// do nothing
	}
	@Around("pointcut()")
	public Object around(ProceedingJoinPoint point) throws Throwable {
		MethodSignature signature = (MethodSignature)point.getSignature();
		Method method = signature.getMethod();
		LimitCount limitCount = method.getAnnotation(LimitCount.class);
		log.info("limitCount为 {}", limitCount);
		// log.info("IP:{}", IPUtil.getIpAddr());
		// 调用对象
		Object target = point.getTarget();
		log.info("调用对象:{}", target);
		Object[] args = point.getArgs();
		log.info("参数: {}", Arrays.toString(args));
		// TODO 业务处理
		return point.proceed();
	}
}

使用注解

@Api(value = "切面注解", tags = {"切面注解"})
@RequestMapping("/anno")
@RestController
@Slf4j
public class AopAnnotationController {
	@GetMapping("/login")
	@ApiOperation(value = "登录", notes = "登录")
	@LimitCount(key = "login", name = "登录接口", prefix = "limit")
	public String login(
			@RequestParam(required = true) String deviceId,
			@RequestParam(required = true) String username,
			@RequestParam(required = true) String password,
			HttpServletRequest request) throws Exception {
		if (StringUtils.equals("张三", username) && StringUtils.equals("123456", password)) {
			return "登录成功";
		}
		return "账户名或密码错误";
	}
}

打印切面获取参数

limitCount： @zzc.learn.springboot.annodemo.annotation.LimitCount(name=登录接口, count=3, period=60, prefix=limit, key=login)
调用对象: zzc.learn.springboot.annodemo.controller.AopAnnotationController@2f5fceb6
参数：  [deviceId001, Tony, mypassword, org.apache.catalina.connector.RequestFacade@14e2d2f]