Java ApacheKafka-基于RESTAPI的消费者?
随后,我构建了一个简单的JavaSpring启动应用程序来与ApacheKafka一起工作 定义了如下所述的生产者控制器Java ApacheKafka-基于RESTAPI的消费者?,java,spring-boot,apache-kafka,spring-kafka,Java,Spring Boot,Apache Kafka,Spring Kafka,随后,我构建了一个简单的JavaSpring启动应用程序来与ApacheKafka一起工作 定义了如下所述的生产者控制器 @RestController @RequestMapping(value = "/kafka") public class KafkaController { private final Producer producer; @Autowired KafkaController(Producer producer) {
@RestController
@RequestMapping(value = "/kafka")
public class KafkaController {
private final Producer producer;
@Autowired
KafkaController(Producer producer) {
this.producer = producer;
}
@PostMapping(value = "/publish")
public void sendMessageToKafkaTopic(@RequestParam("message") String message) {
this.producer.sendMessage(message);
}
}
@Service
public class Consumer {
private final Logger logger = LoggerFactory.getLogger(Producer.class);
@KafkaListener(topics = "users", groupId = "group_id")
public void consume(String message) throws IOException {
logger.info(String.format("#### -> Consumed message -> %s", message));
}
}
和生产者服务业如下
@Service
public class Producer {
private static final Logger logger = LoggerFactory.getLogger(Producer.class);
private static final String TOPIC = "users";
@Autowired
private KafkaTemplate<String, String> kafkaTemplate;
public void sendMessage(String message) {
logger.info(String.format("#### -> Producing message -> %s", message));
this.kafkaTemplate.send(TOPIC, message);
}
}
以及如下所示的配置
server:
port: 9000
spring:
kafka:
consumer:
bootstrap-servers: localhost:9092
group-id: group_id
auto-offset-reset: earliest
key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
producer:
bootstrap-servers: localhost:9092
key-serializer: org.apache.kafka.common.serialization.StringSerializer
value-serializer: org.apache.kafka.common.serialization.StringSerializer
它按预期工作
并在控制台上打印消息
我希望有一个基于RESTAPI的消费者,而不仅仅是在控制台上打印消息。我该怎么做?请参见
只需将代码(从
try
开始)放在@GetMapping
方法中。不清楚“基于REST API的消费者”是什么意思。如果您的意思是要使用REST请求中的一些记录,请参阅。是的,我需要一个端点,用于从主题中检索最新的记录/消息。我确实浏览了提供的链接。您能告诉我如何转换代码,以便我有一个Rest端点来检索消息/记录吗。我是java的新手。