Spring Boot集成RabbitMQ的过程之可靠性与性能提升的问题记录

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>

spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest

spring:
  rabbitmq:
    host: localhost
    port: 5672
    username: guest
    password: guest

spring.rabbitmq.listener.simple.concurrency=3
spring.rabbitmq.listener.simple.max-concurrency=10

spring.rabbitmq.publisher-confirms=true

import org.springframework.amqp.core.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class RabbitMQConfig {
    // 定义队列
    @Bean
    public Queue myQueue() {
        return new Queue("myQueue", true); // 第二个参数表示是否持久化
    }
    // 定义交换机
    @Bean
    public DirectExchange myExchange() {
        return new DirectExchange("myExchange", true, false);
    }
    // 绑定队列和交换机
    @Bean
    public Binding myBinding() {
        return BindingBuilder.bind(myQueue()).to(myExchange()).with("myRoutingKey");
    }
}

import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class RabbitMQProducer {
    @Autowired
    private RabbitTemplate rabbitTemplate;
    public void sendMessage(String message) {
        rabbitTemplate.convertAndSend("myExchange", "myRoutingKey", message);
    }
}

import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;
@Component
public class RabbitMQConsumer {
    @RabbitListener(queues = "myQueue")
    public void receiveMessage(String message) {
        System.out.println("Received message: " + message);
    }
}

spring.rabbitmq.listener.simple.acknowledge-mode=manual

import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.stereotype.Component;
import com.rabbitmq.client.Channel;
@Component
public class RabbitMQConsumer {
    @RabbitListener(queues = "myQueue")
    public void receiveMessage(String message, Channel channel, @Header(AmqpHeaders.DELIVERY_TAG) long tag) throws Exception {
        System.out.println("Received message: " + message);
        // 手动确认消息
        channel.basicAck(tag, false);
    }
}

@SpringBootApplication
public class RabbitMQApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(RabbitMQApplication.class, args);
        RabbitMQProducer producer = context.getBean(RabbitMQProducer.class);
        producer.sendMessage("Hello, RabbitMQ!");
    }
}