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Kafka-在使用者中反序列化对象

spring-kafka apache-kafka java

Thiru · 技术社区 · 8 年前

生产者将消息作为hashmap对象放入队列。我们有JSON序列化程序,我们假设映射将被序列化并放入队列中。这里是生产者配置。

spring:
  kafka:
    bootstrap-servers: localhost:9092
    producer:
        key-serializer: org.springframework.kafka.support.serializer.JsonSerializer
        value-serializer: org.springframework.kafka.support.serializer.JsonSerializer

spring:
   kafka:
       consumer:
            group-id: xyz
            key-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
            value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer

我们的听众方法:

  public void listener(SomeClass abx)

我们看了几篇文章,建议做如下的事情:

 @Bean
  public ConsumerFactory<String, Car> consumerFactory() {
    return new DefaultKafkaConsumerFactory<>(consumerConfigs(), new StringDeserializer(),
        new JsonDeserializer<>(Car.class));
  }

2 回复 | 直到 8 年前

Gary Russell 8 年前

the boot documentation

spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer

spring.kafka.consumer.properties.spring.json.value.default.type=com.example.Invoice

spring.kafka.consumer.properties.spring.json.trusted.packages=com.example,org.acme

-1

Cristian Batista 8 年前

你可以看看合流: https://www.confluent.io/

import io.confluent.kafka.serializers.KafkaAvroDeserializerConfig;
import org.apache.kafka.clients.producer.ProducerConfig;

    @Bean
    public Map<String, Object> producerConfigs() {
        Map<String, Object> props = new HashMap<>();

        props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
        props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, io.confluent.kafka.serializers.KafkaAvroSerializer.class);

        props.put(KafkaAvroDeserializerConfig.SCHEMA_REGISTRY_URL_CONFIG, schemaRegistry);
        props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, io.confluent.kafka.serializers.KafkaAvroSerializer.class);

        (...)

        return props;
    }