Spring 添加多个KafkalistenerContainerFactory时出现问题

嗨，我目前正在涉猎春季卡夫卡，并成功地为我的听众添加了一个卡夫卡ListenerContainerFactory。现在，我想添加多个KafkalistenerContainerFactory（一个用于将包含json消息的主题，另一个用于字符串）。见下面的代码：

@EnableKafka
@Configuration
public class KafkaConsumersConfig {

    private final KafkaConfiguration kafkaConfiguration;

    @Autowired
    public KafkaConsumersConfig(KafkaConfiguration kafkaConfiguration) {
        this.kafkaConfiguration = kafkaConfiguration;
    }

    @Bean
    public KafkaListenerContainerFactory<?> kafkaJsonListenerContainerFactory(){
        ConcurrentKafkaListenerContainerFactory<String,Record> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(jsonConsumerFactory());
        factory.setConcurrency(3);
        factory.setAutoStartup(true);
        return factory;
    }

    @Bean
    public ConsumerFactory<String,Record> jsonConsumerFactory(){
        JsonDeserializer<Record> jsonDeserializer = new JsonDeserializer<>(Record.class);
        return new DefaultKafkaConsumerFactory<>(jsonConsumerConfigs(),new StringDeserializer(), jsonDeserializer);
    }

    @Bean
    public Map<String,Object> jsonConsumerConfigs(){
        Map<String,Object> propsMap = new HashMap<>();
        propsMap.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,  kafkaConfiguration.getBrokerAddress());
        propsMap.put(ConsumerConfig.GROUP_ID_CONFIG, kafkaConfiguration.getJsonGroupId());
        propsMap.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, kafkaConfiguration.getAutoCommit());
        propsMap.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, kafkaConfiguration.getAutoCommitInterval());
        propsMap.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, kafkaConfiguration.getSessionTimeout());
        return propsMap;
    }
    @Bean
    public KafkaListenerContainerFactory<?> kafkaFileListenerContainerFactory(){
        ConcurrentKafkaListenerContainerFactory<String,String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(fileConsumerFactory());
        factory.setConcurrency(3);
        factory.setAutoStartup(true);
        return factory;
    }

    @Bean
    public ConsumerFactory<String,String> fileConsumerFactory(){
        return new DefaultKafkaConsumerFactory<>(fileConsumerConfigs());
    }

    @Bean
    public Map<String,Object> fileConsumerConfigs(){
        Map<String,Object> propsMap = new HashMap<>();
        propsMap.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,  kafkaConfiguration.getBrokerAddress());
        propsMap.put(ConsumerConfig.GROUP_ID_CONFIG, kafkaConfiguration.getFileGroupId());
        propsMap.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, kafkaConfiguration.getAutoCommit());
        propsMap.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, kafkaConfiguration.getAutoCommitInterval());
        propsMap.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, kafkaConfiguration.getSessionTimeout());
        return propsMap;
    }
}

---

我做错了什么？

看起来你不会依赖于弹簧靴的功能

Spring Boot在KafkaAutoConfiguration中提供：

@Bean
@ConditionalOnMissingBean(ConsumerFactory.class)
public ConsumerFactory<?, ?> kafkaConsumerFactory() {

因为您的

ConsumerFactory

bean不是

ConsumerFactory

类型

因此：

• 只需将以下内容添加到应用程序属性文件中，即可从Spring Boot自动配置中排除

  KafkaAutoConfiguration

  ：

  spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration

• 或者将其中一个

  KafkaListenerContainerFactory

  bean重命名为

  KafkaListenerContainerFactory

  ，以在启动时覆盖它
• 或者将一个

  ConsumerFactory

  bean作为

  ConsumerFactory

  类型

---

您可以在KafkaListener定义中定义每个容器工厂，如下所示：

@KafkaListener(topics = "fileTopic", containerFactory = "kafkaFileListenerContainerFactory")
public void fileConsumer(...) {...}

@KafkaListener(topics = "jsonTopic", containerFactory = "kafkaJsonListenerContainerFactory")
public void jsonConsumer(...) {...}

---

我在代码下面实现了它，它对我来说运行良好。

// LISTENER 1
@Bean
@ConditionalOnMissingBean(name = "yourListenerFactory1")
public ConsumerFactory<String, YourCustomObject1> yourConsumerFactory1() {
   Map<String, Object> props = new HashMap<>();
   props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
   props.put(ConsumerConfig.GROUP_ID_CONFIG, "YOUR-GROUP-1");
   return new DefaultKafkaConsumerFactory<>(props, new StringDeserializer(),
     new JsonDeserializer<>(YourCustomObject1.class));
}


@Bean(name = "yourListenerFactory1")
public ConcurrentKafkaListenerContainerFactory<String, YourCustomObject1> 
  yourListenerFactory1() {
   ConcurrentKafkaListenerContainerFactory<String, YourCustomObject1> factory =
       new ConcurrentKafkaListenerContainerFactory<>();
   factory.setConsumerFactory(yourConsumerFactory1());
   ContainerProperties containerProperties = factory.getContainerProperties();
   containerProperties.setPollTimeout(...);
   containerProperties.setAckMode(AckMode...);
   return factory;
}


// LISTENER 2
@Bean
@ConditionalOnMissingBean(name = "yourListenerFactory2")
public ConsumerFactory<String, YourCustomObject2> yourConsumerFactory2() {
   Map<String, Object> props = new HashMap<>();
   props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
   props.put(ConsumerConfig.GROUP_ID_CONFIG, "YOUR-GROUP-2");
   return new DefaultKafkaConsumerFactory<>(props, new StringDeserializer(),
      new JsonDeserializer<>(YourCustomObject2.class));
}


@Bean(name = "yourListenerFactory2")
public ConcurrentKafkaListenerContainerFactory<String, YourCustomObject2> 
   yourListenerFactory2() {
    ConcurrentKafkaListenerContainerFactory<String, YourCustomObject2> factory 
         =  new ConcurrentKafkaListenerContainerFactory<>();
    factory.setConsumerFactory(yourConsumerFactory2());
    ContainerProperties containerProperties = factory.getContainerProperties();
    containerProperties.setPollTimeout(...);
    containerProperties.setAckMode(AckMode...);
    return factory;
 }

消费者2

  @KafkaListener(id = "your-cousumer-2",
                 topicPattern = "your-topic-2",
                 containerFactory = "yourListenerFactory2")
  public void consumer2(YourCustomObject2 data,
                        Acknowledgment acknowledgment,
      @Header(KafkaHeaders.RECEIVED_PARTITION_ID) List<Integer> partitions,
      @Header(KafkaHeaders.RECEIVED_TOPIC) List<String> topics,
      @Header(KafkaHeaders.OFFSET) List<Long> offsets) throws Exception { ...  }

@KafkaListener（id=“your-cousumer-2”，
topicPattern=“your-topic-2”，
containerFactory=“yourListenerFactory2”）
public void consumer2（您的CustomObject2数据，
致谢致谢致谢，
@标题（KafkaHeaders.RECEIVED_PARTITION_ID）列出分区，
@标题（KafkaHeaders.RECEIVED_主题）列出主题，
@标头（KafkaHeaders.OFFSET）列表偏移量）引发异常{…}

另外，我的卡夫卡模板是

@Autowired
KafkaTemplate<String, Object> kafkaTemplate;

@Autowired
卡夫卡坦普尔卡夫卡坦普尔；

如果您对不同的主题使用相同的组id，这是否有效？我没有尝试过。我在同一组中使用过多个主题。它可以工作。我想这只是因为你关闭了

KafkaAutoConfiguration

？您使用

@ConditionalOnMissingBean（name=“yourListenerFactory1”）

所做的事情似乎没有多大意义，因为只有当您的

ConcurrentKafkListenerContainerFactory

不存在时，您才启用ConsumerFactory。您不应该在那里通过KafkListenerContainerFactory而不是ConsumerFactory吗？别这么想works@Rodrigo你是对的。我写错了。我已经编辑了我的答案。谢谢

@KafkaListener(id = "your-cousumer-1",
  topicPattern = "your-topic-1",
  containerFactory = "yourListenerFactory1")
 public void consumer1(YourCustomObject1 data,
                       Acknowledgment acknowledgment,
      @Header(KafkaHeaders.RECEIVED_PARTITION_ID) List<Integer> partitions,
      @Header(KafkaHeaders.RECEIVED_TOPIC) List<String> topics,
      @Header(KafkaHeaders.OFFSET) List<Long> offsets) throws Exception { ... }

  @KafkaListener(id = "your-cousumer-2",
                 topicPattern = "your-topic-2",
                 containerFactory = "yourListenerFactory2")
  public void consumer2(YourCustomObject2 data,
                        Acknowledgment acknowledgment,
      @Header(KafkaHeaders.RECEIVED_PARTITION_ID) List<Integer> partitions,
      @Header(KafkaHeaders.RECEIVED_TOPIC) List<String> topics,
      @Header(KafkaHeaders.OFFSET) List<Long> offsets) throws Exception { ...  }

@Autowired
KafkaTemplate<String, Object> kafkaTemplate;