update 增加重试机制及死信队列

src/main/java/com/m2pool/lease/config/RabbitMQConfig.java

@@ -1,12 +1,14 @@
 package com.m2pool.lease.config;
 
 
+import com.m2pool.lease.constant.RabbitmqConstant;
 import org.springframework.amqp.core.*;
 import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.connection.ConnectionFactory;
 import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
 import org.springframework.amqp.support.converter.MessageConverter;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
@@ -18,6 +20,8 @@ import static com.m2pool.lease.constant.RabbitmqConstant.*;
 @Configuration
 public class RabbitMQConfig {
 
+
+
     @Bean
     public MessageConverter jackson2JsonMessageConverter() {
         //自动生成消息唯一id
@@ -54,13 +58,31 @@ public class RabbitMQConfig {
 
 
     @Bean
-    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(ConnectionFactory connectionFactory) {
+    public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(ConnectionFactory connectionFactory,
+                                                                               RabbitTemplate rabbitTemplate) {
         SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
         factory.setConnectionFactory(connectionFactory);
         //消费者序列化
         factory.setMessageConverter(jackson2JsonMessageConverter());
         factory.setConcurrentConsumers(3); // 设置初始消费者数量
         factory.setMaxConcurrentConsumers(5); // 设置最大消费者数量
+
+        // 配置重试机制 - 使用死信队列恢复器
+        factory.setAdviceChain(org.springframework.amqp.rabbit.config.RetryInterceptorBuilder
+                .stateless()
+                .maxAttempts(3) // 最大重试次数
+                .backOffOptions(5000, 2.0, 60000) // 初始间隔5秒，倍率2.0，最大间隔60秒
+                .recoverer(new org.springframework.amqp.rabbit.retry.RepublishMessageRecoverer(rabbitTemplate,
+                        RabbitmqConstant.RETRY_DEAD_LETTER_EXCHANGE,
+                        RabbitmqConstant.RETRY_DEAD_LETTER_ROUTING_KEY)) // 重试失败后发送到死信队列
+                .build());
+
+        // 使用自动确认模式，让重试机制正常工作
+        factory.setAcknowledgeMode(org.springframework.amqp.core.AcknowledgeMode.AUTO);
+
+        // 设置预取数量，防止消息积压
+        factory.setPrefetchCount(1);
+
         return factory;
     }
 
@@ -140,6 +162,34 @@ public class RabbitMQConfig {
 
     //----------------定义订单延迟队列------------------------
 
+    //----------------定义重试死信队列------------------------
+
+    /**
+     * 重试失败死信交换机
+     */
+    @Bean
+    public DirectExchange retryDeadLetterExchange() {
+        return new DirectExchange(RabbitmqConstant.RETRY_DEAD_LETTER_EXCHANGE);
+    }
+
+    /**
+     * 重试失败死信队列
+     */
+    @Bean
+    public Queue retryDeadLetterQueue() {
+        return new Queue(RabbitmqConstant.RETRY_DEAD_LETTER_QUEUE, true);
+    }
+
+    /**
+     * 重试失败死信队列绑定
+     */
+    @Bean
+    public Binding retryDeadLetterBinding() {
+        return BindingBuilder.bind(retryDeadLetterQueue())
+                .to(retryDeadLetterExchange())
+                .with(RabbitmqConstant.RETRY_DEAD_LETTER_ROUTING_KEY);
+    }
+
     //----------------定义支付相关队列------------------------
     /**
      * 声明 Topic 类型的交换机