手动确认

此示例说明如何在消费者应用程序中手动确认偏移量。

此示例要求将spring.cloud.stream.kafka.bindings.input.consumer.ackMode设置为MANUAL。请针对您的示例使用相应的输入通道名称。

@SpringBootApplication
public class ManuallyAcknowdledgingConsumer {

 public static void main(String[] args) {
     SpringApplication.run(ManuallyAcknowdledgingConsumer.class, args);
 }

 @Bean
 public Consumer<Message<?>> process() {
    return message -> {
        Acknowledgment acknowledgment = message.getHeaders().get(KafkaHeaders.ACKNOWLEDGMENT, Acknowledgment.class);
        if (acknowledgment != null) {
         System.out.println("Acknowledgment provided");
         acknowledgment.acknowledge();
        }
    };
}