如何使用Spring的Acknowledgement.acknowledge()方法进行手动提交
如何使用Spring的Acknowledgement.acknowledge()方法进行手动提交
提问于 2017-09-20 15:01:38
我第一次使用Spring，我无法在我的消费者代码中使用Acknowledgement.acknowledge()方法进行手动提交，这里提到了Reference.html提交-偏移。我的是弹簧引导应用程序。如果我没有使用手动提交过程，那么我的代码就可以正常工作了。但是，当我使用Acknowledgement.acknowledge()进行手动提交时，它会显示与bean相关的错误。另外，如果我没有正确地使用手动提交，请建议我正确的方法。
错误消息：
***************************
APPLICATION FAILED TO START
***************************
Description:
Field ack in Receiver required a bean of type 'org.springframework.kafka.support.Acknowledgment' that could not be found.
Action:
Consider defining a bean of type 'org.springframework.kafka.support.Acknowledgment' in your configuration.我搜索了这个错误，发现我需要添加@Component，但是在我的使用者代码中已经有了。
我的消费者代码如下所示: Receiver.java
import java.util.concurrent.CountDownLatch;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.stereotype.Component;
@Component
public class Receiver {
@Autowired
public Acknowledgment ack;
private CountDownLatch latch = new CountDownLatch(1);
@KafkaListener(topics = "${kafka.topic.TestTopic}")
public void receive(ConsumerRecord<?, ?> consumerRecord){
System.out.println(consumerRecord.value());
latch.countDown();
ack.acknowledge();
}
}我的生产者代码如下所示: Sender.java
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
@Component
public class Sender {
@Autowired
private KafkaTemplate<String, Map<String, Object>> kafkaTemplate;
public void send(Map<String, Object> map){
kafkaTemplate.send("TestTopic", map);
}
}编辑1:
我的新消费者代码如下: Receiver.java
import java.util.concurrent.CountDownLatch;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.support.Acknowledgment;
import org.springframework.stereotype.Component;
@Component
public class Receiver {
private CountDownLatch latch = new CountDownLatch(1);
@KafkaListener(topics = "${kafka.topic.TestTopic}", containerFactory = "kafkaManualAckListenerContainerFactory")
public void receive(ConsumerRecord<?, ?> consumerRecord, Acknowledgment ack){
System.out.println(consumerRecord.value());
latch.countDown();
ack.acknowledge();
}
}我还更改了配置类：
import java.util.HashMap;
import java.util.Map;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.EnableKafka;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.core.ConsumerFactory;
import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
@Configuration
@EnableKafka
public class ReceiverConfig {
@Value("${kafka.bootstrap-servers}")
private String bootstrapServers;
@Value("${spring.kafka.consumer.group-id}")
private String consumerGroupId;
@Bean
public Map<String, Object> consumerConfigs() throws SendGridException {
Map<String, Object> props = new HashMap<>();
props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers);
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
props.put(ConsumerConfig.GROUP_ID_CONFIG, consumerGroupId);
return props;
}
@Bean
public ConsumerFactory<String, String> consumerFactory(){
return new DefaultKafkaConsumerFactory<>(consumerConfigs());
}
/*@Bean
public ConcurrentKafkaListenerContainerFactory<String, String> kafkaListenerContainerFactory(){
ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
factory.setConsumerFactory(consumerFactory());
return factory;
}*/
@Bean
public ConcurrentKafkaListenerContainerFactory<String, String> kafkaManualAckListenerContainerFactory(){
ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory<>();
factory.setConsumerFactory(consumerFactory());
return factory;
}
@Bean
public Receiver receiver() {
return new Receiver();
}
}在将containerFactory = "kafkaManualAckListenerContainerFactory“添加到接收()方法后，我将得到以下错误。
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 1 of method kafkaListenerContainerFactory in org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration required a bean of type 'org.springframework.kafka.core.ConsumerFactory' that could not be found.
- Bean method 'kafkaConsumerFactory' in 'KafkaAutoConfiguration' not loaded because @ConditionalOnMissingBean (types: org.springframework.kafka.core.ConsumerFactory; SearchStrategy: all) found bean 'consumerFactory'
Action:
Consider revisiting the conditions above or defining a bean of type 'org.springframework.kafka.core.ConsumerFactory' in your configuration.Stack Overflow用户
发布于 2021-11-09 14:37:18
那些使用spring引导应用程序的用户，只需在下面简单地添加到application.yml (或特定于环境的文件)中。
spring:
kafka:
listener:
ack-mode: manual以上更改将使Acknowledgment ack参数在内部可用。
receive(ConsumerRecord<?, ?> consumerRecord, Acknowledgment ack)方法自动实现。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/46325540
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