spring接口重放过滤问题

1、定义注释

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import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target;   @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.METHOD, ElementType.TYPE}) public @interface AvoidRepeatRequest {     /** 请求间隔时间，单位秒，该时间范围内的请求为重复请求 */     int intervalTime() default 3;       /** 是否根据参数进行校验 */     boolean checkParameter() default false;       /** 是否根据用户进行校验 */     boolean checkUser() default true;       /** 返回的提示信息 */     String msg() default "请不要频繁重复请求！"; }

2、添加过滤器

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import com.alibaba.fastjson.JSON; import net.jodah.expiringmap.ExpirationPolicy; import net.jodah.expiringmap.ExpiringMap; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Pointcut; import org.aspectj.lang.reflect.MethodSignature; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.core.annotation.Order; import org.springframework.stereotype.Component; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes;   import javax.servlet.http.HttpServletRequest; import java.lang.reflect.Method; import java.util.Map; import java.util.concurrent.TimeUnit;   /**  * @Description : 重复请求过滤器  * @Author : cxw  * @Date : 2022/11/30 10:56  * @Version : 1.0  **/ @Component @Aspect @Order(100) public class RepeatRequestFilter {       Logger logger= LoggerFactory.getLogger(RepeatRequestFilter.class);       ExpiringMap<String,String> cacheMap = ExpiringMap.builder()             //设置最大值,添加第101个entry时，会导致第1个立马过期(即使没到过期时间)             .maxSize(100000)             //设置每个key有效时间60s,如果key不设置过期时间，key永久有效             .expiration(60, TimeUnit.SECONDS)             //允许更新过期时间值,如果不设置variableExpiration，不允许后面更改过期时间,一旦执行更改过期时间操作会抛异常UnsupportedOperationException             .variableExpiration()             //CREATED:只在put和replace方法清零过期时间             //ACCESSED:在CREATED策略基础上增加 在还没过期时get方法清零过期时间。             //清零过期时间也就是重置过期时间，重新计算过期时间             .expirationPolicy(ExpirationPolicy.CREATED)             .build();           private static final String SUFFIX = "C_";       // 定义 注解 类型的切点     @Pointcut("@annotation(com..api.common.annotation.AvoidRepeatRequest)")     public void arrPointcut() {}       // 实现过滤重复请求功能     @Around("arrPointcut()")     public Object arrBusiness(ProceedingJoinPoint joinPoint) throws Throwable {         // 获取 redis key，由 session ID 和 请求URI 构成         ServletRequestAttributes sra = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();         HttpServletRequest request = sra.getRequest();         String key = SUFFIX + "_" + request.getRequestURI();           // 获取方法的 AvoidRepeatRequest 注解         Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();         AvoidRepeatRequest arr = method.getAnnotation(AvoidRepeatRequest.class);         if(arr!=null&&arr.checkUser()){                 key+="_"+ request.getSession().getId();         }         if(arr!=null&&arr.checkParameter()){             Map<String, Object> nameAndValue = ParameterNameUtils.getNameAndValue(joinPoint);             if(nameAndValue!=null&&nameAndValue.size()>0){                 key+="_"+ JSON.toJSONString(nameAndValue);             }         }         // 判断是否是重复的请求         if (arr!=null&&continceKey(key,arr.intervalTime())) {             throw new Exception("提示："+arr.msg());         }           return joinPoint.proceed();     }       /**      * 验证      * @param key      * @param intervalTime      * @return      */     private boolean continceKey(String key, int intervalTime) {         String s = cacheMap.get(key);         cacheMap.put(key,"v",intervalTime,TimeUnit.SECONDS);         if(s!=null){             return true;         }         return false;     } }

3、使用

@AvoidRepeatRequest(intervalTime = 30, msg = "不允许重复提交",checkParameter = true,checkUser = false)

 

 4、引用

        <!-- 过期map -->
        <dependency>
            <groupId>net.jodah</groupId>
            <artifactId>expiringmap</artifactId>
            <version>0.5.9</version>
        </dependency>