IllegalStateException：请考虑在值 and/or 键解串器中配置一个 'ErrorHandlingDeserializer'

Question

我想实现发送和接收 Java 序列化对象的 Kafka 生产者。我试过这个：

制作人：

@Configuration
public class KafkaProducerConfig {

@Value(value = "${kafka.bootstrapAddress}")
private String bootstrapAddress;

@Bean
public ProducerFactory<String, SaleRequestFactory> saleRequestFactoryProducerFactory() {
    Map<String, Object> configProps = new HashMap<>();
    configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
    configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
    configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, SaleRequestFactorySerializer.class);
    return new DefaultKafkaProducerFactory<>(configProps);
}

@Bean
public ProducerFactory<String, String> producerFactory() {
    Map<String, Object> configProps = new HashMap<>();
    configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
    return new DefaultKafkaProducerFactory<>(configProps);
}


@Bean
public KafkaTemplate<String, SaleRequestFactory> saleRequestFactoryKafkaTemplate() {
    return new KafkaTemplate<>(saleRequestFactoryProducerFactory());
}

@Bean
public KafkaTemplate<String, String> kafkaTemplate() {
    return new KafkaTemplate<>(producerFactory());
}

}

发送对象：

@Autowired
private KafkaTemplate<String, SaleRequestFactory> saleRequestFactoryKafkaTemplate;

private static String topic = "tp-sale";

private void perform(){

    SaleRequestFactory obj = new SaleRequestFactory();
    obj.setId(100);

    ListenableFuture<SendResult<String, SaleRequestFactory>> send = saleRequestFactoryKafkaTemplate.send(topic, obj);
}

消费者：

@EnableKafka
@Configuration
public class KafkaConsumerConfig {

    @Value(value = "${kafka.bootstrapAddress}")
    private String bootstrapAddress;

    private String groupId = "test";

    @Bean
    public ConsumerFactory<String, SaleResponseFactory> consumerFactory() {
        Map<String, Object> props = new HashMap<>();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, SaleResponseFactoryDeserializer.class);
        return new DefaultKafkaConsumerFactory<>(props);
    }

    @Bean
    public ConcurrentKafkaListenerContainerFactory<String, SaleResponseFactory> kafkaListenerContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<String, SaleResponseFactory> factory =
                new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        return factory;
    }
}

接收对象

    @KafkaListener(topics = "tp-sale")
public SaleResponseFactory transactionElavonAuthorizeProcess(@Payload SaleRequestFactory tf, @Headers MessageHeaders headers) throws Exception {

    System.out.println(tf.getId());

    SaleResponseFactory resObj = new SaleResponseFactory();
    resObj.setUnique_id("123123");

    return resObj;
}

自定义对象

    @Getter
    @Setter
    @NoArgsConstructor
    @AllArgsConstructor
    @Builder(toBuilder = true)
    public class SaleRequestFactory implements Serializable{
    
        private static final long serialVersionUID = 1744050117179344127L;
        
        private int id;
    }

public class SaleRequestFactorySerializer implements Serializable, Serializer<SaleRequestFactory> {

    @Override
    public byte[] serialize(String topic, SaleRequestFactory data) {
        // convert data to byte[]
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try
        {
            ObjectOutputStream outputStream = new ObjectOutputStream(out);
            outputStream.writeObject(data);
            out.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

        return out.toByteArray();
    }
}


    @Getter
    @Setter
    @NoArgsConstructor
    @AllArgsConstructor
    @Builder(toBuilder = true)
    public class SaleResponseFactory implements Serializable{
    
        private static final long serialVersionUID = 1744050117179344127L;
    
        private String unique_id;
    }

public class SaleResponseFactoryDeserializer implements Serializable, Deserializer<SaleResponseFactory> {

    @Override
    public SaleResponseFactory deserialize(String topic, byte[] data) {
        // convert data to SaleResponseFactory
        SaleResponseFactory saleResponseFactory = null;
        try
        {
            ByteArrayInputStream bis = new ByteArrayInputStream(data);
            ObjectInputStream in = new ObjectInputStream(bis);
            saleResponseFactory = (SaleResponseFactory) in.readObject();
            in.close();
        }
        catch (IOException | ClassNotFoundException e)
        {
            e.printStackTrace();
        }
        return saleResponseFactory;
    }
}

当我尝试发送消息时出现错误：

Caused by: org.apache.kafka.common.errors.SerializationException: Error deserializing key/value for partition tp-sale-0 at offset 0. If needed, please seek past the record to continue consumption.
Caused by: java.lang.ClassCastException: null
21:27:51.152 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] DEBUG KafkaMessageListenerContainer$ListenerConsumer[debug:296] - Commit list: {}
21:27:51.153 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] ERROR KafkaMessageListenerContainer$ListenerConsumer[error:149] - Consumer exception
java.lang.IllegalStateException: This error handler cannot process 'SerializationException's directly; please consider configuring an 'ErrorHandlingDeserializer' in the value and/or key deserializer
        at org.springframework.kafka.listener.SeekUtils.seekOrRecover(SeekUtils.java:145)
        at org.springframework.kafka.listener.SeekToCurrentErrorHandler.handle(SeekToCurrentErrorHandler.java:103)
        at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.handleConsumerException(KafkaMessageListenerContainer.java:1265)
        at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:1022)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.lang.Thread.run(Thread.java:835)
Caused by: org.apache.kafka.common.errors.SerializationException: Error deserializing key/value for partition tp-sale-0 at offset 0. If needed, please seek past the record to continue consumption.
Caused by: java.lang.ClassCastException: null

你知道我该如何解决这个问题吗？

编辑： 我设法实现了这些改进：

制作人：

@Configuration
public class KafkaProducerConfig {

@Value(value = "${kafka.bootstrapAddress}")
private String bootstrapAddress;

@Bean
public ProducerFactory<String, SaleRequestFactory> saleRequestFactoryProducerFactory() {
    Map<String, Object> configProps = new HashMap<>();
    configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
    configProps.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
    configProps.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, SaleRequestFactorySerializer.class);
    return new DefaultKafkaProducerFactory<>(configProps);
}

@Bean
public ProducerFactory<String, String> producerFactory() {
    Map<String, Object> configProps = new HashMap<>();
    configProps.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
    return new DefaultKafkaProducerFactory<>(configProps);
}


@Bean
public KafkaTemplate<String, SaleRequestFactory> saleRequestFactoryKafkaTemplate() {
    return new KafkaTemplate<>(saleRequestFactoryProducerFactory());
}

@Bean
public KafkaTemplate<String, String> kafkaTemplate() {
    return new KafkaTemplate<>(producerFactory());
}

}

发送对象：

@Autowired
private KafkaTemplate<String, SaleRequestFactory> saleRequestFactoryKafkaTemplate;

private static String topic = "tp-sale";

private void perform(){

    SaleRequestFactory obj = new SaleRequestFactory();
    obj.setId(100);

    ListenableFuture<SendResult<String, SaleRequestFactory>> send = saleRequestFactoryKafkaTemplate.send(topic, obj);
}

消费者：

@EnableKafka
@Configuration
public class KafkaConsumerConfig {

    @Value(value = "${kafka.bootstrapAddress}")
    private String bootstrapAddress;

    private String groupId = "test";

    @Bean
    public ConsumerFactory<String, SaleResponseFactory> consumerFactory() {
        Map<String, Object> props = new HashMap<>();
        props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapAddress);
        props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId);
        props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, SaleResponseFactoryDeserializer.class);
        return new DefaultKafkaConsumerFactory<>(props);
    }

    @Bean
    public ConcurrentKafkaListenerContainerFactory<String, SaleResponseFactory> kafkaListenerContainerFactory() {
        ConcurrentKafkaListenerContainerFactory<String, SaleResponseFactory> factory =
                new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        return factory;
    }
}

接收对象

    @KafkaListener(topics = "tp-sale")
public SaleResponseFactory transactionElavonAuthorizeProcess(@Payload SaleRequestFactory tf, @Headers MessageHeaders headers) throws Exception {

    System.out.println(tf.getId());

    SaleResponseFactory resObj = new SaleResponseFactory();
    resObj.setUnique_id("123123");

    return resObj;
}

自定义对象

    @Getter
    @Setter
    @NoArgsConstructor
    @AllArgsConstructor
    @Builder(toBuilder = true)
    public class SaleRequestFactory implements Serializable{
    
        private static final long serialVersionUID = 1744050117179344127L;
        
        private int id;
    }

public class SaleRequestFactorySerializer implements Serializable, Serializer<SaleRequestFactory> {

    @Override
    public byte[] serialize(String topic, SaleRequestFactory data) {
        // convert data to byte[]
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try
        {
            ObjectOutputStream outputStream = new ObjectOutputStream(out);
            outputStream.writeObject(data);
            out.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

        return out.toByteArray();
    }
}


    @Getter
    @Setter
    @NoArgsConstructor
    @AllArgsConstructor
    @Builder(toBuilder = true)
    public class SaleResponseFactory implements Serializable{
    
        private static final long serialVersionUID = 1744050117179344127L;
    
        private String unique_id;
    }

public class SaleResponseFactoryDeserializer implements Serializable, Deserializer<SaleResponseFactory> {

    @Override
    public SaleResponseFactory deserialize(String topic, byte[] data) {
        // convert data to SaleResponseFactory
        SaleResponseFactory saleResponseFactory = null;
        try
        {
            ByteArrayInputStream bis = new ByteArrayInputStream(data);
            ObjectInputStream in = new ObjectInputStream(bis);
            saleResponseFactory = (SaleResponseFactory) in.readObject();
            in.close();
        }
        catch (IOException | ClassNotFoundException e)
        {
            e.printStackTrace();
        }
        return saleResponseFactory;
    }
}

当我发送消息时出现错误：

13:03:53.675 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] DEBUG RecordMessagingMessageListenerAdapter[debug:296] - Listener method returned result [org.factory.SaleResponseFactory@69c400ab] - generating response message for it
13:03:53.675 [org.springframework.kafka.KafkaListenerEndpointContainer#0-0-C-1] DEBUG RecordMessagingMessageListenerAdapter[debug:296] - No replyTopic to handle the reply: org.factory.SaleResponseFactory@69c400ab

你知道我怎样才能returnSaleResponseFactory回到原来的Producerclass吗？

编辑 2：我得到这个例外：

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.kafka.listener.KafkaMessageListenerContainer<java.lang.String, org.engine.plugin.transactions.factory.SaleResponseFactory>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1717)

Answer 1

参见 the documentation。

Using ErrorHandlingDeserializer

When a deserializer fails to deserialize a message, Spring has no way to handle the problem, because it occurs before the poll() returns. To solve this problem, the ErrorHandlingDeserializer has been introduced. This deserializer delegates to a real deserializer (key or value). If the delegate fails to deserialize the record content, the ErrorHandlingDeserializer returns a null value and a DeserializationException in a header that contains the cause and the raw bytes. When you use a record-level MessageListener, if the ConsumerRecord contains a DeserializationException header for either the key or value, the container’s ErrorHandler is called with the failed ConsumerRecord. The record is not passed to the listener.

...

Answer 2

假设您已经为请求回复正确配置了服务器端，您可以使用 ReplyingKafkaTemplate 在客户端接收回复消息。

类似

回复生产者配置

@Configuration
@Import({KafkaProducerConfig.class, KafkaConsumerConfig.class})
public class ReplyingKafkaProducerConfig {

  @Bean
  public ReplyingKafkaTemplate<String, SaleRequestFactory, SaleResponseFactory> replyKafkaTemplate(ProducerFactory<String, SaleRequestFactory> producerFactory, ConcurrentKafkaListenerContainerFactory<String, SaleResponseFactory> factory) {
     ConcurrentMessageListenerContainer<String, SaleResponseFactory> container = factory.createContainer("tp-sale");       
     container.getContainerProperties().setGroupId("tp-sale.reply");
     return new ReplyingKafkaTemplate<>(producerFactory, container);
  }   

}

回复模板

@Autowired
private ReplyingKafkaTemplate<String, SaleRequestFactory, SaleResponseFactory> requestReplyKafkaTemplate;

private static String topic = "tp-sale";

private void perform(){

  SaleRequestFactory obj = new SaleRequestFactory();
  obj.setId(100);   
  ProducerRecord<String, SaleRequestFactory> record = new ProducerRecord<>("tp-sale", obj);
  RequestReplyFuture<String, SaleRequestFactory, SaleResponseFactory> replyFuture = requestReplyKafkaTemplate.sendAndReceive(record);
  SendResult<String, SaleRequestFactory> sendResult = replyFuture.getSendFuture().get(10, TimeUnit.SECONDS);
  ConsumerRecord<String, SaleResponseFactory> consumerRecord = replyFuture.get(10, TimeUnit.SECONDS);

}

例子借自https://docs.spring.io/spring-kafka/reference/html/#replying-template

IllegalStateException：请考虑在值 and/or 键解串器中配置一个 'ErrorHandlingDeserializer'

IllegalStateException: please consider configuring an 'ErrorHandlingDeserializer' in the value and/or key deserializer

java

spring

apache-kafka

spring-kafka