kafka

springboot kafka怎样实现消息死信队列

小樊
105
2024-12-18 23:29:45
栏目: 大数据

在Spring Boot中配置Kafka消息死信队列,可以通过以下步骤实现:

  1. 添加依赖: 首先,确保你的pom.xml文件中包含了Kafka和Spring Kafka的依赖。

    <dependency>
        <groupId>org.springframework.kafka</groupId>
        <artifactId>spring-kafka</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.kafka</groupId>
        <artifactId>kafka-clients</artifactId>
    </dependency>
    
  2. 配置Kafka: 在application.ymlapplication.properties文件中配置Kafka的连接信息。

    spring:
      kafka:
        bootstrap-servers: localhost:9092
        consumer:
          group-id: my-group
          auto-offset-reset: earliest
          key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
        producer:
          key-serializer: org.apache.kafka.common.serialization.StringSerializer
          value-serializer: org.apache.kafka.common.serialization.StringSerializer
    
  3. 定义死信队列: 在Kafka的配置文件中定义死信队列。例如,在application.yml中添加以下配置:

    kafka:
      consumer:
        properties:
          max.poll.records: 500
          enable.auto.commit: false
          auto.offset.reset: earliest
          group.id: my-group
          value.deserializer: org.apache.kafka.common.serialization.StringDeserializer
          key.deserializer: org.apache.kafka.common.serialization.StringDeserializer
          security.protocol: SSL
          ssl.truststore.location: classpath:truststore.jks
          ssl.truststore.password: password
          ssl.key.store.location: classpath:keystore.jks
          ssl.key.store.password: password
          ssl.key.password: password
          ssl.enabled: true
          properties.security.protocol: SSL
          properties.ssl.truststore.location: classpath:truststore.jks
          properties.ssl.truststore.password: password
          properties.ssl.key.store.location: classpath:keystore.jks
          properties.ssl.key.store.password: password
          properties.ssl.key.password: password
          properties.ssl.enabled: true
      listener:
        simple:
          consumer:
            max-poll-records: 500
            enable-auto-commit: false
            auto-offset-reset: earliest
            group-id: my-group
            value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
            key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
            security-protocol: SSL
            ssl-truststore-location: classpath:truststore.jks
            ssl-truststore-password: password
            ssl-key-store-location: classpath:keystore.jks
            ssl-key-store-password: password
            ssl-key-password: password
            ssl-enabled: true
          topics:
            - my-topic
          group-id: my-group
          auto-offset-reset: earliest
          key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          security-protocol: SSL
          ssl-truststore-location: classpath:truststore.jks
          ssl-truststore-password: password
          ssl-key-store-location: classpath:keystore.jks
          ssl-key-store-password: password
          ssl-key-password: password
          ssl-enabled: true
    
  4. 定义死信队列的消费者: 创建一个消费者来处理死信队列中的消息。

    import org.apache.kafka.clients.consumer.ConsumerRecord;
    import org.apache.kafka.clients.consumer.ConsumerRecords;
    import org.apache.kafka.clients.consumer.KafkaConsumer;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.kafka.annotation.KafkaListener;
    import org.springframework.stereotype.Service;
    
    @Service
    public class DeadLetterQueueConsumer {
    
        @Autowired
        private KafkaConsumer<String, String> kafkaConsumer;
    
        @KafkaListener(topics = "${kafka.consumer.topics.dead-letter-topic}", groupId = "${kafka.consumer.group-id}")
        public void listen(ConsumerRecord<String, String> record) {
            System.out.printf("Received record: key = %s, value = %s, partition = %d, offset = %d%n",
                    record.key(), record.value(), record.partition(), record.offset());
            // 处理死信队列中的消息
        }
    }
    
  5. 定义死信队列的生产者: 创建一个生产者来发送消息到死信队列。

    import org.apache.kafka.clients.producer.KafkaProducer;
    import org.apache.kafka.clients.producer.ProducerRecord;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    @Service
    public class DeadLetterQueueProducer {
    
        @Autowired
        private KafkaProducer<String, String> kafkaProducer;
    
        public void sendToDeadLetterQueue(String topic, String message) {
            kafkaProducer.send(new ProducerRecord<>(topic, message));
        }
    }
    
  6. 配置死信队列: 在Kafka的配置文件中定义死信队列。例如,在application.yml中添加以下配置:

    kafka:
      consumer:
        properties:
          max-poll-records: 500
          enable-auto-commit: false
          auto-offset-reset: earliest
          group-id: my-group
          value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          security-protocol: SSL
          ssl-truststore-location: classpath:truststore.jks
          ssl-truststore-password: password
          ssl-key-store-location: classpath:keystore.jks
          ssl-key-store-password: password
          ssl-key-password: password
          ssl-enabled: true
      listener:
        simple:
          consumer:
            max-poll-records: 500
            enable-auto-commit: false
            auto-offset-reset: earliest
            group-id: my-group
            value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
            key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
            security-protocol: SSL
            ssl-truststore-location: classpath:truststore.jks
            ssl-truststore-password: password
            ssl-key-store-location: classpath:keystore.jks
            ssl-key-store-password: password
            ssl-key-password: password
            ssl-enabled: true
          topics:
            - my-topic
          group-id: my-group
          auto-offset-reset: earliest
          key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
          security-protocol: SSL
          ssl-truststore-location: classpath:truststore.jks
          ssl-truststore-password: password
          ssl-key-store-location: classpath:keystore.jks
          ssl-key-store-password: password
          ssl-key-password: password
          ssl-enabled: true
    

通过以上步骤,你就可以在Spring Boot中配置Kafka消息死信队列了。

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