Springboot kafka 集成过程中的问题

Q1:Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'

A1:是因为没有在注入时未对其进行配置导致，注册参照如下

/**
 * Created by wolf   2018/12/1
 */
@Configuration
@EnableKafka
public class kafkatemplateConfig {
 
    @Value("${spring.kafka.bootstrap-servers}")
    private String bootstrapServers;
 
    @Bean
    public KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<String,String>> kafkaListenerContainerFactory(){
        ConcurrentKafkaListenerContainerFactory<String,String> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(consumerFactory());
        factory.setConcurrency(3);
        factory.getContainerProperties().setPollTimeout(5000);
        return factory;
    }
 
    @Bean
    public ConsumerFactory<String,String> consumerFactory(){
        return new DefaultKafkaConsumerFactory<>(consumerConfigs());
    }
 
    @Bean
    public Map<String,Object> consumerConfigs(){
        Map<String,Object> propsMap = new HashMap<>();
        propsMap.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,this.bootstrapServers);
        propsMap.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG,false);//自行控制提交offset
        propsMap.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG,"100");//提交延迟毫秒数
        propsMap.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG,"15000");//执行超时时间
        propsMap.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        propsMap.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        propsMap.put(ConsumerConfig.GROUP_ID_CONFIG,"dsafas");
        propsMap.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG,"latest");//开始消费位置
        return propsMap;
    }
 
    @Bean
    public Consumer listener(){
        return new Consumer();
    }
}

Q2:a:Could not instantiate class org.springframework.kafka.support.serializer.JsonDeserializer

　　b:org.springframework.kafka.support.serializer.JsonDeserializer with modifiers "protected"

　　c:If the serializationyou can also enable trust all (*)

A2:看下是因为要为监听者得到的对象在进行序列化与反序列化要进行设置在上述配置类中如下两列针对该问题

参考1 参考2

1 2	`propsMap.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);` `propsMap.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);`

Q3:java.lang.IllegalArgumentException: Magic v1 does not support record headers

　　A3:版本问题我其实遇到时是用的 springboot.version: 2.1.0.RELEASE 部署的kafka组件版本为较新版kafka_2.11-2.1.0 与旧版kafka_2.12-0.10.2.1 最终将springboot.version换成1.5.10.RELEASE