From 5c155f5f110964e0ca1ccc4e4256c91d68abd7dc Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: 星期二, 17 八月 2021 14:08:18 +0800
Subject: [PATCH] 支持自定义注解实现接口限流

---
 ruoyi-common/src/main/java/com/ruoyi/common/annotation/RateLimiter.java          |   40 ++++++++++
 ruoyi-ui/src/utils/request.js                                                    |    6 
 ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java |  116 +++++++++++++++++++++++++++++
 ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java               |    2 
 ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java        |   29 +++++++
 ruoyi-ui/src/utils/ruoyi.js                                                      |   22 ++--
 ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java              |    5 +
 ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java                 |   20 +++++
 8 files changed, 225 insertions(+), 15 deletions(-)

diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java
index 940763f..5850723 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java
@@ -14,5 +14,5 @@
 @Retention(RetentionPolicy.RUNTIME)
 public @interface Excels
 {
-    Excel[] value();
+    public Excel[] value();
 }
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/annotation/RateLimiter.java b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/RateLimiter.java
new file mode 100644
index 0000000..5642038
--- /dev/null
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/annotation/RateLimiter.java
@@ -0,0 +1,40 @@
+package com.ruoyi.common.annotation;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import com.ruoyi.common.constant.Constants;
+import com.ruoyi.common.enums.LimitType;
+
+/**
+ * 闄愭祦娉ㄨВ
+ * 
+ * @author ruoyi
+ */
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+public @interface RateLimiter
+{
+    /**
+     * 闄愭祦key
+     */
+    public String key() default Constants.RATE_LIMIT_KEY;
+
+    /**
+     * 闄愭祦鏃堕棿,鍗曚綅绉�
+     */
+    public int time() default 60;
+
+    /**
+     * 闄愭祦娆℃暟
+     */
+    public int count() default 100;
+
+    /**
+     * 闄愭祦绫诲瀷
+     */
+    public LimitType limitType() default LimitType.DEFAULT;
+}
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java b/ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java
index 7fdf163..7a57fc0 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java
@@ -75,6 +75,11 @@
     public static final String REPEAT_SUBMIT_KEY = "repeat_submit:";
 
     /**
+     * 闄愭祦 redis key
+     */
+    public static final String RATE_LIMIT_KEY = "rate_limit:";
+
+    /**
      * 楠岃瘉鐮佹湁鏁堟湡锛堝垎閽燂級
      */
     public static final Integer CAPTCHA_EXPIRATION = 2;
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java b/ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java
new file mode 100644
index 0000000..ad01659
--- /dev/null
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java
@@ -0,0 +1,20 @@
+package com.ruoyi.common.enums;
+
+/**
+ * 闄愭祦绫诲瀷
+ *
+ * @author ruoyi
+ */
+
+public enum LimitType
+{
+    /**
+     * 榛樿绛栫暐鍏ㄥ眬闄愭祦
+     */
+    DEFAULT,
+
+    /**
+     * 鏍规嵁璇锋眰鑰匢P杩涜闄愭祦
+     */
+    IP
+}
diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java
new file mode 100644
index 0000000..fd456b0
--- /dev/null
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java
@@ -0,0 +1,116 @@
+package com.ruoyi.framework.aspectj;
+
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.List;
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.Signature;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.aspectj.lang.annotation.Pointcut;
+import org.aspectj.lang.reflect.MethodSignature;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.RedisScript;
+import org.springframework.stereotype.Component;
+import com.ruoyi.common.annotation.RateLimiter;
+import com.ruoyi.common.enums.LimitType;
+import com.ruoyi.common.exception.ServiceException;
+import com.ruoyi.common.utils.ServletUtils;
+import com.ruoyi.common.utils.StringUtils;
+import com.ruoyi.common.utils.ip.IpUtils;
+
+/**
+ * 闄愭祦澶勭悊
+ *
+ * @author ruoyi
+ */
+@Aspect
+@Component
+public class RateLimiterAspect
+{
+    private static final Logger log = LoggerFactory.getLogger(RateLimiterAspect.class);
+
+    private RedisTemplate<Object, Object> redisTemplate;
+
+    private RedisScript<Long> limitScript;
+
+    @Autowired
+    public void setRedisTemplate1(RedisTemplate<Object, Object> redisTemplate)
+    {
+        this.redisTemplate = redisTemplate;
+    }
+
+    @Autowired
+    public void setLimitScript(RedisScript<Long> limitScript)
+    {
+        this.limitScript = limitScript;
+    }
+
+    // 閰嶇疆缁囧叆鐐�
+    @Pointcut("@annotation(com.ruoyi.common.annotation.RateLimiter)")
+    public void rateLimiterPointCut()
+    {
+    }
+
+    @Before("rateLimiterPointCut()")
+    public void doBefore(JoinPoint point) throws Throwable
+    {
+        RateLimiter rateLimiter = getAnnotationRateLimiter(point);
+        String key = rateLimiter.key();
+        int time = rateLimiter.time();
+        int count = rateLimiter.count();
+
+        String combineKey = getCombineKey(rateLimiter, point);
+        List<Object> keys = Collections.singletonList(combineKey);
+        try
+        {
+            Long number = redisTemplate.execute(limitScript, keys, count, time);
+            if (StringUtils.isNull(number) || number.intValue() > count)
+            {
+                throw new ServiceException("璁块棶杩囦簬棰戠箒锛岃绋嶅悗鍐嶈瘯");
+            }
+            log.info("闄愬埗璇锋眰'{}',褰撳墠璇锋眰'{}',缂撳瓨key'{}'", count, number.intValue(), key);
+        }
+        catch (ServiceException e)
+        {
+            throw e;
+        }
+        catch (Exception e)
+        {
+            throw new RuntimeException("鏈嶅姟鍣ㄩ檺娴佸紓甯革紝璇风◢鍚庡啀璇�");
+        }
+    }
+
+    /**
+     * 鏄惁瀛樺湪娉ㄨВ锛屽鏋滃瓨鍦ㄥ氨鑾峰彇
+     */
+    private RateLimiter getAnnotationRateLimiter(JoinPoint joinPoint)
+    {
+        Signature signature = joinPoint.getSignature();
+        MethodSignature methodSignature = (MethodSignature) signature;
+        Method method = methodSignature.getMethod();
+
+        if (method != null)
+        {
+            return method.getAnnotation(RateLimiter.class);
+        }
+        return null;
+    }
+
+    public String getCombineKey(RateLimiter rateLimiter, JoinPoint point)
+    {
+        StringBuffer stringBuffer = new StringBuffer(rateLimiter.key());
+        if (rateLimiter.limitType() == LimitType.IP)
+        {
+            stringBuffer.append(IpUtils.getIpAddr(ServletUtils.getRequest()));
+        }
+        MethodSignature signature = (MethodSignature) point.getSignature();
+        Method method = signature.getMethod();
+        Class<?> targetClass = method.getDeclaringClass();
+        stringBuffer.append("-").append(targetClass.getName()).append("- ").append(method.getName());
+        return stringBuffer.toString();
+    }
+}
diff --git a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java
index 7422f3f..322d6e3 100644
--- a/ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java
+++ b/ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java
@@ -6,6 +6,7 @@
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
 import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.DefaultRedisScript;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 import com.fasterxml.jackson.annotation.JsonAutoDetect;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
@@ -47,4 +48,32 @@
         template.afterPropertiesSet();
         return template;
     }
+
+    @Bean
+    public DefaultRedisScript<Long> limitScript()
+    {
+        DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
+        redisScript.setScriptText(limitScriptText());
+        redisScript.setResultType(Long.class);
+        return redisScript;
+    }
+
+    /**
+     * 闄愭祦鑴氭湰
+     */
+    private String limitScriptText()
+    {
+        return "local key = KEYS[1]\n" +
+                "local count = tonumber(ARGV[1])\n" +
+                "local time = tonumber(ARGV[2])\n" +
+                "local current = redis.call('get', key);\n" +
+                "if current and tonumber(current) > count then\n" +
+                "    return current;\n" +
+                "end\n" +
+                "current = redis.call('incr', key)\n" +
+                "if tonumber(current) == 1 then\n" +
+                "    redis.call('expire', key, time)\n" +
+                "end\n" +
+                "return current;";
+    }
 }
diff --git a/ruoyi-ui/src/utils/request.js b/ruoyi-ui/src/utils/request.js
index e95d01d..e4418b1 100644
--- a/ruoyi-ui/src/utils/request.js
+++ b/ruoyi-ui/src/utils/request.js
@@ -29,9 +29,9 @@
         if (typeof value === 'object') {
           for (const key of Object.keys(value)) {
             if (value[key] !== null && typeof (value[key]) !== 'undefined') {
-              let params = propName + '[' + key + ']'
-              let subPart = encodeURIComponent(params) + '='
-              url += subPart + encodeURIComponent(value[key]) + '&'
+              let params = propName + '[' + key + ']';
+              let subPart = encodeURIComponent(params) + '=';
+              url += subPart + encodeURIComponent(value[key]) + '&';
             }
           }
         } else {
diff --git a/ruoyi-ui/src/utils/ruoyi.js b/ruoyi-ui/src/utils/ruoyi.js
index db42885..f2765f0 100644
--- a/ruoyi-ui/src/utils/ruoyi.js
+++ b/ruoyi-ui/src/utils/ruoyi.js
@@ -55,17 +55,17 @@
 
 // 娣诲姞鏃ユ湡鑼冨洿
 export function addDateRange(params, dateRange, propName) {
-  let search = params
-  search.params = typeof (search.params) === 'object' && search.params !== null && !Array.isArray(search.params) ? search.params : {}
-  dateRange = Array.isArray(dateRange) ? dateRange : []
-  if (typeof (propName) === 'undefined') {
-    search.params['beginTime'] = dateRange[0]
-    search.params['endTime'] = dateRange[1]
-  } else {
-    search.params['begin' + propName] = dateRange[0]
-    search.params['end' + propName] = dateRange[1]
-  }
-  return search
+	let search = params;
+	search.params = typeof (search.params) === 'object' && search.params !== null && !Array.isArray(search.params) ? search.params : {};
+	dateRange = Array.isArray(dateRange) ? dateRange : [];
+	if (typeof (propName) === 'undefined') {
+		search.params['beginTime'] = dateRange[0];
+		search.params['endTime'] = dateRange[1];
+	} else {
+		search.params['begin' + propName] = dateRange[0];
+		search.params['end' + propName] = dateRange[1];
+	}
+	return search;
 }
 
 // 鍥炴樉鏁版嵁瀛楀吀

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