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RabbitMQ 与 SpringBoot2.X 整合

  • publisher-confirms ,实现一个监听器用于监听 broker 端给我们返回的确认请求: RabbitTemplate.ConfirmCallback

  • publisher-returns, 保证消息对 broker 端是可达的,如果出现路由键不可达的情况,则使用监听器对不可达的消息进行后续处理,保证消息的路由成功: RabbitTemplate.ReturnCallback

  • 注意一点,在发送消息的时候对 template 进行配置 mandatory = true 保证监听有效。在生产端还可以配置其他属性,比如发送重试、超时时间、次数、间隔等

代码实现:

消费端代码地址:https://github.com/hmilyos/rabbitmqdemo.git rabbitmq-springboot/rabbitmq-springboot-consumer 项目下

生产端代码地址:https://github.com/hmilyos/rabbitmqdemo.git rabbitmq-springboot/rabbitmq-springboot-product 项目下

通用依赖:

    <parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
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        <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>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-amqp</artifactId>
		</dependency>
		<dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.6</version>
        </dependency>
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消费端:

核心配置在配置文件里面

  • 首先配置手工确认签收模式,用于ACK 的手工处理,这样我们可以保证消息的可靠性送达,或者在消费端消费失败的时候可以做到重回队列(不建议重回队列)、根据业务记录日志等处理。

  • 设置消费端的监听个数和最大个数,用于控制消费端的并发情况

spring.rabbitmq.addresses=192.168.0.7:5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.virtual-host=/
spring.rabbitmq.connection-timeout=15000

spring.rabbitmq.listener.simple.acknowledge-mode=manual
spring.rabbitmq.listener.simple.concurrency=5
spring.rabbitmq.listener.simple.max-concurrency=10
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主配置:

@Configuration
@ComponentScan({"com.hmily.*"})
public class MainConfig {

}
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消费端的监听 RabbitListener 这个注解很好用!!!

RabbitListener 是一个组合注解,里面可以注解配置 。 @QueueBinding @Queue @Exchange 直接通过这个组合注解一次性搞定消费端交换机、队列、绑定、路由、并且配置监听功能等。

Message 使用的是  org.springframework.messaging.Message
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@Slf4j
@Component
public class RabbitReceiver {

    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "queue-1",
                    durable="true"),
            exchange = @Exchange(value = "exchange-1",
                    durable="true",
                    type= "topic",
                    ignoreDeclarationExceptions = "true"),
            key = "springboot.*"
    )
    )
    @RabbitHandler
    public void onMessage(Message message, Channel channel) throws Exception {
        log.info("--------------------------------------");
        log.info("消费端Payload: " + message.getPayload());
        Long deliveryTag = (Long)message.getHeaders().get(AmqpHeaders.DELIVERY_TAG);
        //手工ACK
        channel.basicAck(deliveryTag, false);
    }
}
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生产端

生产端的核心配置

配置文件:

spring.rabbitmq.addresses=192.168.0.7:5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.virtual-host=/
spring.rabbitmq.connection-timeout=15000

spring.rabbitmq.publisher-confirms=true
spring.rabbitmq.publisher-returns=true
# return 的时候代表消息不可达,设置 broker 不自动删除该消息,
# 而是返回到生产端,让我们进行一些后续的处理
spring.rabbitmq.template.mandatory=true
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spring.rabbitmq.template.mandatory=true 的意思是: return 的时候代表消息不可达,设置 broker 不自动删除该消息,而是返回到生产端,让我们进行一些后续的处理

主配置类:

@Configuration
@ComponentScan({"com.hmily.*"})
public class MainConfig {

}
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消费端发送代码

@Slf4j
@Component
public class RabbitSender {
	@Autowired
	private RabbitTemplate rabbitTemplate;
	
	//回调函数: confirm确认
	final ConfirmCallback confirmCallback = new RabbitTemplate.ConfirmCallback() {
		@Override
		public void confirm(CorrelationData correlationData, boolean ack, String cause) {
			log.info("correlationData: " + correlationData);
			log.info("ack: " + ack);
			if(!ack){
				log.info("异常处理....");
			}
		}
	};
	
    //回调函数: return返回
	final ReturnCallback returnCallback = new RabbitTemplate.ReturnCallback() {
		@Override
		public void returnedMessage(org.springframework.amqp.core.Message message, int replyCode,
				String replyText, String exchange, String routingKey) {
			log.info("return exchange: {}, routingKey: {}, replyCode: {}, replyText: {}",
					exchange, routingKey, replyCode, replyText);
		}
	};
	
	//发送消息方法调用: 构建Message消息
	public void send(Object message, Map<String, Object> properties) throws Exception {
		MessageHeaders mhs = new MessageHeaders(properties);
		Message<Object> msg = MessageBuilder.createMessage(message, mhs);
		rabbitTemplate.setConfirmCallback(confirmCallback);
		rabbitTemplate.setReturnCallback(returnCallback);
		//id + 时间戳 全局唯一
        String id = UUID.randomUUID().toString();
        log.info("id: {}", id);
		CorrelationData correlationData = new CorrelationData(id);
		rabbitTemplate.convertAndSend("exchange-1", "springboot.abc", msg, correlationData);
	}
}
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写个单元测试用例

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

	@Test
	public void contextLoads() {
	}

	@Autowired
	private RabbitSender rabbitSender;

	private static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
	
	@Test
	public void testSender1() throws Exception {
		 Map<String, Object> properties = new HashMap<>();
		 properties.put("number", "12345");
		 properties.put("send_time", simpleDateFormat.format(new Date()));
		 rabbitSender.send("Hello RabbitMQ For Spring Boot!", properties);
	}
}
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运行单元测试

看消费端的日志
修改一下发送时的 routingkey ,模拟发送失败
就进入 returnCallback

发送一个 Java 实体

先在消费端 声明一些队列、交换机、routingKey 的配置

spring.rabbitmq.listener.order.queue.name=queue-2
spring.rabbitmq.listener.order.queue.durable=true
spring.rabbitmq.listener.order.exchange.name=exchange-2
spring.rabbitmq.listener.order.exchange.durable=true
spring.rabbitmq.listener.order.exchange.type=topic
spring.rabbitmq.listener.order.exchange.ignoreDeclarationExceptions=true
spring.rabbitmq.listener.order.key=springboot.*
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消费端:

    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "${spring.rabbitmq.listener.order.queue.name}",
                    durable="${spring.rabbitmq.listener.order.queue.durable}"),
            exchange = @Exchange(value = "${spring.rabbitmq.listener.order.exchange.name}",
                    durable="${spring.rabbitmq.listener.order.exchange.durable}",
                    type= "${spring.rabbitmq.listener.order.exchange.type}",
                    ignoreDeclarationExceptions = "${spring.rabbitmq.listener.order.exchange.ignoreDeclarationExceptions}"),
            key = "${spring.rabbitmq.listener.order.key}"
    )
    )
    @RabbitHandler
    public void onOrderMessage(@Payload Order order,
                               Channel channel,
                               @Headers Map<String, Object> headers) throws Exception {
        log.info("--------------------------------------");
        log.info("消费端order: " + order.getId());
        Long deliveryTag = (Long)headers.get(AmqpHeaders.DELIVERY_TAG);
        //手工ACK
        channel.basicAck(deliveryTag, false);
    }
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这里面有个特别需要注意的地方,Payload 里面的路径要跟 生产端的实体路径完全一致,要不然会找到不到这个类的!!!
我这里为了简便就不写一个 common.jar 了,在实际开发里面,这个 java bean 应该放在 common.jar  里面
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注意实体要实现 Serializable 序列化接口,要不然发送消息会失败的!!

@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
public class Order implements Serializable {

    private String id;
    private String name;


}
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生产端 照样跟着写一个发消息的方法

	//发送消息方法调用: 构建自定义对象消息
	public void sendOrder(Order order) throws Exception {
		rabbitTemplate.setConfirmCallback(confirmCallback);
		rabbitTemplate.setReturnCallback(returnCallback);
		//id + 时间戳 全局唯一
        String id = UUID.randomUUID().toString();
        log.info("sendOrder id: {}", id);
		CorrelationData correlationData = new CorrelationData(id);
		rabbitTemplate.convertAndSend("exchange-2", "springboot.def", order, correlationData);
	}
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写单元测试

	@Test
	public void testSender2() throws Exception {
		 Order order = new Order("001", "第一个订单");
		 rabbitSender.sendOrder(order);
	}
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运行单元测试

验证 Java 实体消息发送成功

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