Spring Boot对 Apache Pulsar的支持
Spring Boot对Apache Pulsar的支持主要体现在以下几个方面:
- Spring Boot应用可以作为Pulsar的生产者发送消息。
- Spring Boot应用可以作为Pulsar的消费者接收并处理消息。
- Spring Boot可以与Pulsar集成,实现分布式追踪和日志记录。
以下是一个使用Spring Boot与Apache Pulsar集成的简单例子:
1. 添加依赖
在pom.xml
中添加Spring Boot和Pulsar客户端的依赖:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.pulsar</groupId>
<artifactId>pulsar-client</artifactId>
<version>2.9.0</version> <!-- Use the appropriate version -->
</dependency>
</dependencies>
2. 配置Pulsar生产者和消费者
在application.properties
中配置Pulsar的连接信息:
spring.pulsar.service-url=pulsar://localhost:6650
spring.pulsar.producer.topic=my-topic
spring.pulsar.consumer.topic=my-topic
spring.pulsar.consumer.subscription-name=my-subscription
3. 发送消息
创建一个服务来发送消息:
@Service
public class PulsarProducerService {
@Autowired
private PulsarClient pulsarClient;
public void sendMessage(String message) throws PulsarClientException {
Producer<String> producer = pulsarClient.newProducer(Schema.STRING)
.topic("my-topic")
.create();
producer.send(message);
}
}
4. 接收消息
创建一个消费者服务来接收并处理消息:
@Service
public class PulsarConsumerService {
@Autowired
private PulsarClient pulsarClient;
public void subscribeAndConsume() throws PulsarClientException {
Consumer<String> consumer = pulsarClient.newConsumer(Schema.STRING)
.topic("my-topic")
.subscriptionName("my-subscription")
.subscribe();
while (true) {
Message<String> message = consumer.receive();
// Handle the message
System.out.println("Received message: " + message.getValue());
consumer.acknowledge(message);
}
}
}
5. 启动类
在Spring Boot的启动类中启动Pulsar客户端:
@SpringBootApplication
public class PulsarApplication {
public static void main(String[] args) {
SpringApplication.run(PulsarApplication.class, args);
}
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