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| | | package com.ruoyi.framework.aspectj;
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| | |
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| | | import java.lang.reflect.Method;
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| | | import java.util.Collections;
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| | | import java.util.List;
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| | | import org.aspectj.lang.JoinPoint;
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| | | import org.aspectj.lang.Signature;
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| | | import org.aspectj.lang.annotation.Aspect;
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| | | import org.aspectj.lang.annotation.Before;
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| | | import org.aspectj.lang.annotation.Pointcut;
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| | | import org.aspectj.lang.reflect.MethodSignature;
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| | | import org.slf4j.Logger;
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| | | import org.slf4j.LoggerFactory;
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| | | import org.springframework.beans.factory.annotation.Autowired;
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| | | import org.springframework.data.redis.core.RedisTemplate;
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| | | import org.springframework.data.redis.core.script.RedisScript;
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| | | import org.springframework.stereotype.Component;
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| | | import com.ruoyi.common.annotation.RateLimiter;
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| | | import com.ruoyi.common.enums.LimitType;
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| | | import com.ruoyi.common.exception.ServiceException;
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| | | import com.ruoyi.common.utils.ServletUtils;
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| | | import com.ruoyi.common.utils.StringUtils;
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| | | import com.ruoyi.common.utils.ip.IpUtils;
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| | |
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| | | /**
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| | | * 限流处理
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| | | *
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| | | * @author ruoyi
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| | | */
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| | | @Aspect
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| | | @Component
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| | | public class RateLimiterAspect
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| | | {
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| | | private static final Logger log = LoggerFactory.getLogger(RateLimiterAspect.class);
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| | |
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| | | private RedisTemplate<Object, Object> redisTemplate;
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| | |
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| | | private RedisScript<Long> limitScript;
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| | |
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| | | @Autowired
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| | | public void setRedisTemplate1(RedisTemplate<Object, Object> redisTemplate)
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| | | {
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| | | this.redisTemplate = redisTemplate;
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| | | }
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| | |
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| | | @Autowired
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| | | public void setLimitScript(RedisScript<Long> limitScript)
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| | | {
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| | | this.limitScript = limitScript;
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| | | }
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| | |
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| | | @Before("@annotation(rateLimiter)")
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| | | public void doBefore(JoinPoint point, RateLimiter rateLimiter) throws Throwable
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| | | {
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| | | String key = rateLimiter.key();
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| | | int time = rateLimiter.time();
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| | | int count = rateLimiter.count();
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| | |
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| | | String combineKey = getCombineKey(rateLimiter, point);
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| | | List<Object> keys = Collections.singletonList(combineKey);
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| | | try
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| | | {
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| | | Long number = redisTemplate.execute(limitScript, keys, count, time);
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| | | if (StringUtils.isNull(number) || number.intValue() > count)
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| | | {
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| | | throw new ServiceException("访问过于频繁,请稍后再试");
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| | | }
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| | | log.info("限制请求'{}',当前请求'{}',缓存key'{}'", count, number.intValue(), key);
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| | | }
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| | | catch (ServiceException e)
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| | | {
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| | | throw e;
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| | | }
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| | | catch (Exception e)
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| | | {
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| | | throw new RuntimeException("服务器限流异常,请稍后再试");
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| | | }
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| | | }
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| | |
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| | | public String getCombineKey(RateLimiter rateLimiter, JoinPoint point)
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| | | {
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| | | StringBuffer stringBuffer = new StringBuffer(rateLimiter.key());
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| | | if (rateLimiter.limitType() == LimitType.IP)
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| | | {
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| | | stringBuffer.append(IpUtils.getIpAddr(ServletUtils.getRequest()));
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| | | }
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| | | MethodSignature signature = (MethodSignature) point.getSignature();
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| | | Method method = signature.getMethod();
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| | | Class<?> targetClass = method.getDeclaringClass();
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| | | stringBuffer.append("-").append(targetClass.getName()).append("- ").append(method.getName());
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| | | return stringBuffer.toString();
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| | | }
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| | | }
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| | | package com.ruoyi.framework.aspectj; |
| | | |
| | | import com.ruoyi.common.annotation.RateLimiter; |
| | | import com.ruoyi.common.enums.LimitType; |
| | | import com.ruoyi.common.exception.ServiceException; |
| | | import com.ruoyi.common.utils.RedisUtils; |
| | | import com.ruoyi.common.utils.ServletUtils; |
| | | import lombok.extern.slf4j.Slf4j; |
| | | import org.aspectj.lang.JoinPoint; |
| | | import org.aspectj.lang.annotation.Aspect; |
| | | import org.aspectj.lang.annotation.Before; |
| | | import org.aspectj.lang.reflect.MethodSignature; |
| | | import org.redisson.api.RateType; |
| | | import org.springframework.stereotype.Component; |
| | | |
| | | import java.lang.reflect.Method; |
| | | |
| | | /** |
| | | * 限流处理 |
| | | * |
| | | * @author Lion Li |
| | | */ |
| | | @Slf4j |
| | | @Aspect |
| | | @Component |
| | | public class RateLimiterAspect { |
| | | |
| | | @Before("@annotation(rateLimiter)") |
| | | public void doBefore(JoinPoint point, RateLimiter rateLimiter) throws Throwable { |
| | | int time = rateLimiter.time(); |
| | | int count = rateLimiter.count(); |
| | | String combineKey = getCombineKey(rateLimiter, point); |
| | | try { |
| | | RateType rateType = RateType.OVERALL; |
| | | if (rateLimiter.limitType() == LimitType.CLUSTER) { |
| | | rateType = RateType.PER_CLIENT; |
| | | } |
| | | long number = RedisUtils.rateLimiter(combineKey, rateType, count, time); |
| | | if (number == -1) { |
| | | throw new ServiceException("访问过于频繁,请稍候再试"); |
| | | } |
| | | log.info("限制令牌 => {}, 剩余令牌 => {}, 缓存key => '{}'", count, number, combineKey); |
| | | } catch (ServiceException e) { |
| | | throw e; |
| | | } catch (Exception e) { |
| | | throw new RuntimeException("服务器限流异常,请稍候再试"); |
| | | } |
| | | } |
| | | |
| | | public String getCombineKey(RateLimiter rateLimiter, JoinPoint point) { |
| | | StringBuilder stringBuffer = new StringBuilder(rateLimiter.key()); |
| | | if (rateLimiter.limitType() == LimitType.IP) { |
| | | // 获取请求ip |
| | | stringBuffer.append(ServletUtils.getClientIP()).append("-"); |
| | | } else if (rateLimiter.limitType() == LimitType.CLUSTER){ |
| | | // 获取客户端实例id |
| | | stringBuffer.append(RedisUtils.getClient().getId()).append("-"); |
| | | } |
| | | MethodSignature signature = (MethodSignature) point.getSignature(); |
| | | Method method = signature.getMethod(); |
| | | Class<?> targetClass = method.getDeclaringClass(); |
| | | stringBuffer.append(targetClass.getName()).append("-").append(method.getName()); |
| | | return stringBuffer.toString(); |
| | | } |
| | | } |