1

pom.xml

@@ -55,6 +55,11 @@
             <artifactId>rocketmq-spring-boot-starter</artifactId>
             <version>2.2.0</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>33.3.1-jre</version>
+        </dependency>
         <!-- Spring Boot Starter Test，测试依赖 -->
         <dependency>
             <groupId>org.springframework.boot</groupId>

src/main/java/cn/van/business/mq/MessageConsumerService.java

@@ -4,6 +4,7 @@ import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.http.HttpRequest;
 import cn.hutool.json.JSONUtil;
 import com.alibaba.fastjson2.JSONObject;
+import com.google.common.util.concurrent.RateLimiter;
 import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
 import org.apache.rocketmq.spring.core.RocketMQListener;
 import org.slf4j.Logger;
@@ -27,10 +28,13 @@ public class MessageConsumerService implements RocketMQListener<JSONObject> {
 
     private static final Logger logger = LoggerFactory.getLogger(MessageConsumerService.class);
 
+    // create a rate limiter of 1 qps
+    RateLimiter rateLimiter = RateLimiter.create(1.0);
     @Override
     public void onMessage(JSONObject jsonObject) {
         // 处理消息
         try {
+            rateLimiter.acquire(); // 请求许可。如果超过速率，则此方法会阻塞
             logger.info("消费到消息：{}", jsonObject);
             String body = jsonObject.getString("body");
             byte[] decodedBody = Base64.getDecoder().decode(body);