SpringBoot 集成RabbitMQ集群及简单操作

RabbitMQ集群搭建参考：https://blog.csdn.net/weixin_42465125/article/details/88368784

在Spring官网的生成器，生成两个Maven工程：

rabbit-producer-demo：

Pom文件生成者和消费者一致

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.3.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>cn.cuit.rabbit</groupId>
	<artifactId>rabbit-producer-demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>rabbit-producer-demo</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

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

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

properties文件也是一致的：

spring.application.name=spirng-boot-rabbitmq-producer

# 配置集群的VIP # 192.168.174.150:5672
spring.rabbitmq.addresses=192.168.174.150:5672
# 配置真实IP也可以
#spring.rabbitmq.addresses=192.168.174.140:5672,192.168.174.141:5672     

spring.rabbitmq.username=cuit
spring.rabbitmq.password=cuit

spring.rabbitmq.connection-timeout=15000

# confirm模式
spring.rabbitmq.publisher-confirms=true
# return机制
spring.rabbitmq.publisher-returns=true
# 与return机制结合配置次属性
spring.rabbitmq.template.mandatory=true

配置一个队列： 

package cn.cuit.rabbit.one2one.producer;

import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class RabbitConfig {
	@Bean
	public Queue queue() {
		return new Queue("q_hello");
	}
}

消息生成者：

package cn.cuit.rabbit.one2one.producer;

import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.amqp.core.AmqpTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 简单队列
 *
 * 更多例子参考
 * https://blog.csdn.net/hellozpc/article/details/81436980#8SpringbootRabbitMQ_1267
 * https://blog.csdn.net/aa1215018028/article/details/81325082
 */
@Component
public class HelloSender {
	@Autowired
	private AmqpTemplate rabbitTemplate;

	public void send() {
		String date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());// 24小时制
		String context = "hello " + date;
		System.out.println("Sender : " + context);
		// 简单对列的情况下routingKey即为Q名
		this.rabbitTemplate.convertAndSend("q_hello", context);
	}
}

生产者发送消息测试:

package cn.cuit.rabbit.one2one.producer;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class RabbitMqHelloTest {

	@Autowired
	private HelloSender helloSender;

	@Test
	public void hello() throws Exception {
		helloSender.send();
	}
}

运行测试，然后观察在RabbitMQ的web界面去看看：

可以看到我们刚刚代码中创建的q_hello队列 

查看消息：

下面来消费端是否可以在RabbitMQ中获取到这个消息

消费端：

package cn.cuit.rabbit.one2one.consumer;

import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Component
@RabbitListener(queues = "q_hello")
public class HelloReceiver {

	@RabbitHandler
	public void process(String hello) {
		System.out.println("Receiver  : " + hello);
	}
}

启动类：

package cn.cuit.rabbit;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class RabbitConsumerDemoApplication {

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

}

启动消费端SpringBoot程序，观察控制台输出：

OK的，消费者从RabbitMQ中获取到刚刚的消息了，RabbitMQ有好几种发送消息的模式和消费消息的模式，更多例子参考代码中的链接

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