1：引入jar包

<!-- Spring Boot aop 代理 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

2：定義自定義註解

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Documented
@Order
 
(Ordered.HIGHEST_PRECEDENCE)
public @interface RequestLimit {
    //訪問次數
int count() default 2;
//單位分鐘
int time() default 5;
}

3：新增切面，定義切點

@Aspect
@Component
public class RequestLimitContract {

    @Autowired
private JedisTemplate jedisTemplate;
@Pointcut("@annotation(com.mryx.gus.annotation.RequestLimit)"
 
)
    public void annotationPointCut() {
    }

    @Before("annotationPointCut()")
    public Object before(JoinPoint joinPoint) {
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
String comCode = request.getParameterMap().get("com_code"
 
)[0];
        if (StringUtils.isEmpty(comCode)) {
            request.setAttribute("success", false);
request.setAttribute("message", "貨主為空");
            return ResponseDto.createFailureResponse("貨主為空");
}
        MethodSignature sign = (MethodSignature) joinPoint.getSignature();
Method method = sign.getMethod();
RequestLimit annotation = method.getAnnotation(RequestLimit.class);
String count = jedisTemplate.get(comCode);
Integer timeout;
        if (StringUtils.isEmpty(count)) {
            jedisTemplate.setex(comCode, "1", annotation.time() * 60);
} else {
            Integer num = Integer.valueOf(count);
            if (num == annotation.count()) {
                request.setAttribute("success", false);
request.setAttribute("message", "超出訪問上線");
                return ResponseDto.createFailureResponse("超出訪問上線");
}
            timeout = jedisTemplate.ttl(comCode);
jedisTemplate.setex(comCode, String.valueOf(Integer.valueOf(count) + 1), timeout);
}
        request.setAttribute("success", true);
request.setAttribute("message", "成功");
        return ResponseDto.createSuccessResponse("成功");
}


}

4：定義Controller

@RestController
@RequestMapping("url")
public class URLController {

    

@RequestLimit(count = 2,time = 5)

5：http://localhost:8080/url/test/xiaoming

直接訪問就OK