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SpringBoot整合RabbitMQ学习笔记

以下三种类型的消息，生产者和消费者需各自启动一个服务，模拟生产者服务发送消息，消费者服务监听消息，分布式开发。

一 Fanout类型信息

1. . RabbitMQ创建交换机和队列
   在RabbitMQ控制台，新建交换机hmall.fanout，新建两个队列，fanout.queue1和fanout.queue2，并将连个队列和交换机进行绑定即可。
   操作如下图所示：
   一下操作可以通过代码实现，具体参考配置类
   （1）创建队列
   

（2）创建交换机

（3）绑定
2. 代码实现
（1）引入依赖

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

（2）配置MQ配置信息

spring:rabbitmq:host: 192.168.150.101 #主机ipport: 5672 #端口virtual-host: /hmall #虚拟主机username: hmall #用户名password: 123 #密码exchange: hmall.fanoutproducer:queue1: fanout.queue1

（3）声明队列和交换机配置类

@Component
public class FanoutConfg{@Value("${spring.rabbitmq.exchange}")private String exchange@Value("${spring.rabbitmq.producer.queue1}")private String queueName1// 声明fanout交换机@Beanpublic FanoutExchange fanoutExchange(){return new FanoutExchange(exchanage);}// 声明队列@Beanpublic Queue fanoutQueue1(){return new Queue(queueName1);}//绑定队列和交换机@Beanpublic Binding bindingQueue1(Queue fanoutQueue1,FanoutExchange fanoutExchange){return BindingBuilder,build(fanoutQueue1).to(fanoutExchange);}
}

（4）生产者

@Component
public class RabbitMqProduce {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.producer.queue})private String queueName;/*** 入参说明：* 第一个参数：queueName：队列名称* 第二个参数：路由键，fanout类型不需要路由键* 第三个参数：msg 消息题内容*/public void send(String msg){rabbitTemplete.covertAndSend(queueName,null,msg);}}

（4）消费者

@Component
public class RabbitMqListener {@RabbitListener(queues="${spring.rabbitmq.producer.queue}")public void counsume(String msg){System.out.pringln("消费者收到 fanout.queue队列发的消息",msg);}
}

（5）测试类

@SpringBootTest
public class SpringBootTest{@AUtowiredprivate RabbitMqProduce producer;@Testpublic void testSendFanoutMsg(){producer.send("fanout类型发送消息！！！");}
}

二 direct类型发送消息

1. 控制台操作
   （1）交换机和队列的创建参考fanout的操作
   （2）绑定：与fanout不同的是 给交换机绑定队列的同时需要指定路由键，如下图所示：
   
2. 代码实现
   （1）依赖引入参考fanout类型的消息
   （2）mq消息配置

spring:rabbitmq:host: 192.168.150.101 #主机ipport: 5672 #端口virtual-host: /hmall #虚拟主机username: hmall #用户名password: 123 #密码exchange: hmall.directproducer:queue1: direct.queue1queue2: direct.queue2routingKey1: redroutingKey2: red2

（3）MQ配置类
以下配置可以在消费者注解上实现

@Component
public class RabbitMqConfig {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.producer.exchange}")private String exchange;@value("${spring.rabbitmq.producer.queue1}")private String queueName1;@value("${spring.rabbitmq.producer.queue2}")private String queueName2;@value("${spring.rabbitmq.producer.routingKey1}")private String routingKey1;@value("${spring.rabbitmq.producer.routingKey2}")private String routingKey2;// 创建交换机@Bean("directExchange")public Exchange getExchange(){return ExchangeBuilder.topicExchange(exchange) // 交换机类型，交换机名称.durable(true) //ture为持久化，存到磁盘，false存到内存.build();}// 创建队列@Bean("directQueue1")public Queue getDirectQueue1(){retuen new Queue(queueName1);}// 交换机绑定队列@beanpublic Binging bindDirectQueue1(@Qualifier("directExchange") Exchange exchange,@Qualifier("directQueue1") Queue queue){return BindingBuilder.bind(queue).to(exchange).with(routingKey1).noargs();	}// 创建队列@Bean("directQueue2")public Queue getDirectQueue2(){retuen new Queue(queueName2);}// 交换机绑定队列@beanpublic Binging bindDirectQueue2(@Qualifier("directExchange") Exchange exchange,@Qualifier("directQueue2") Queue queue){return BindingBuilder.bind(queue).to(exchange).with(routingKey2).noargs();	}}

（4）生产者发送消息

@Component
public class RabbitMqProduce {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.producer.queue1})private String queueName1;@value("${spring.rabbitmq.producer.queue2})private String queueName2;@value("${spring.rabbitmq.producer.routingKey2})private String routingKey1;@value("${spring.rabbitmq.producer.routingKey1})private String routingKey2;/*** 入参说明：* 第一个参数：queueName：队列名称* 第二个参数：路由键，fanout类型不需要路由键* 第三个参数：msg 消息题内容*/public void sendQueue1(String msg){rabbitTemplete.covertAndSend(queueName1,routingKey1,msg);}public void sendQueue2(String msg){rabbitTemplete.covertAndSend(queueName2,routingKey2,msg);}}

（5）消费者监听消息
第一种：已经编写了配置类

@Component
public class RabbitMqListener {@RabbitListener(queues="${spring.rabbitmq.producer.queue1}")public void counsume(String msg){System.out.pringln("消费者收到 direct.queue1队列发的消息",msg);}@RabbitListener(queues="${spring.rabbitmq.producer.queue2}")public void counsume(String msg){System.out.pringln("消费者收到 direct.queue2队列发的消息",msg);}
}

第二种：在注解上配置交换机和队列以及路由键

@Component
public class RabbitMqListener {@RabbitListener(bindings = @QueueBinding(value = Queue(name="${spring.rabbitmq.producer.queue1}",durable="true"),exchange = @Exchange(name="${spring.rabbitmq.producer.exchange)",type=ExchangeType.DIRECT),key = {"${spring.rabbitmq.producer.routingKey1}","${spring.rabbitmq.producer.routingKey2}"}	))public void counsume(String msg){System.out.pringln("消费者收到 direct.queue1队列发的消息",msg);}@RabbitListener(bindings = @QueueBinding(value = Queue(name="${spring.rabbitmq.producer.queue2}",durable="true"),exchange = @Exchange(name="${spring.rabbitmq.producer.exchange)",type=ExchangeType.DIRECT),key = {"${spring.rabbitmq.producer.routingKey1}","${spring.rabbitmq.producer.routingKey2}"}	))public void counsume(String msg){System.out.pringln("消费者收到 direct.queue2队列发的消息",msg);}
}

（6）测试类

@SpringBootTest
public class SpringBootTest{@AUtowiredprivate RabbitMqProduce producer;@Testpublic void testSendDirectMsg(){producer.send("direct类型发送消息！！！");}
}

三 Topic类型消息

1. 控制台操作
   参考前面的创建交换机，队列，以及绑定关系操作
2. 代码实现
   （1）依赖引入参考fanout类型的消息
   （2）mq消息配置
   路由键使用通配符进行匹配,#代表多个，*代表一个

spring:rabbitmq:host: 192.168.150.101 #主机ipport: 5672 #端口virtual-host: /hmall #虚拟主机username: hmall #用户名password: 123 #密码exchange: hmall.topicproducer:queue1: topic.queue1queue2: topic.queue2routingKey1: china.#routingKey2: #.news

（3）MQ配置类

@Component
public class RabbitMqConfig {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.producer.exchange}")private String exchange;@value("${spring.rabbitmq.producer.queue1}")private String queueName1;@value("${spring.rabbitmq.producer.queue2}")private String queueName2;@value("${spring.rabbitmq.producer.routingKey1}")private String routingKey1;@value("${spring.rabbitmq.producer.routingKey2}")private String routingKey2;// 创建交换机@Bean("topicExchange")public Exchange getExchange(){return ExchangeBuilder.topicExchange(exchange) // 交换机类型，交换机名称.durable(true) //ture为持久化，存到磁盘，false存到内存.build();}// 创建队列@Bean("topicQueue1")public Queue getDirectQueue1(){retuen new Queue(queueName1);}// 交换机绑定队列@beanpublic Binging bindDirectQueue1(@Qualifier("topicExchange") Exchange exchange,@Qualifier("topicQueue1") Queue queue){return BindingBuilder.bind(queue).to(exchange).with(routingKey1).noargs();	}// 创建队列@Bean("topicQueue2")public Queue getDirectQueue2(){retuen new Queue(queueName2);}// 交换机绑定队列@beanpublic Binging bindDirectQueue2(@Qualifier("topicExchange") Exchange exchange,@Qualifier("topicQueue2") Queue queue){return BindingBuilder.bind(queue).to(exchange).with(routingKey2).noargs();	}}

（4）生产者发送消息

@Component
public class RabbitMqProduce {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.producer.queue1})private String queueName1;@value("${spring.rabbitmq.producer.queue2})private String queueName2;@value("${spring.rabbitmq.producer.routingKey2})private String routingKey1;@value("${spring.rabbitmq.producer.routingKey1})private String routingKey2;/*** 入参说明：* 第一个参数：queueName：队列名称* 第二个参数：路由键，fanout类型不需要路由键* 第三个参数：msg 消息题内容*/public void sendQueue1(String msg){rabbitTemplete.covertAndSend(queueName1,routingKey1,msg);}public void sendQueue2(String msg){rabbitTemplete.covertAndSend(queueName2,routingKey2,msg);}}

（5）消费者监听消息

@Component
public class RabbitMqListener {@RabbitListener(queues="${spring.rabbitmq.producer.queue1}")public void counsume(String msg){System.out.pringln("消费者收到 topic.queue1队列发的消息",msg);}@RabbitListener(queues="${spring.rabbitmq.producer.queue2}")public void counsume(String msg){System.out.pringln("消费者收到 topic.queue2队列发的消息",msg);}
}

（6）测试类

@SpringBootTest
public class SpringBootTest{@AUtowiredprivate RabbitMqProduce producer;@Testpublic void testSendDirectMsg(){producer.send("direct类型发送消息！！！");}
}

四 消息转换器

MQ会把消息体变成字节码

解决办法：使用消息转换器，实现如下：

1. 在生产者和消费者两个服务引入依赖

<dependency><groupId>com.fasterxml.jackson</groupId><artifactId>jasckson-databind</artifactId>
</dependency>

2. 在生产者和消费者两个服务编写消息转换器配置

@Component
public class JacksonMessageConvertor{@Beanpublic MessageCoverter jacksonMessageConvertor(){return new Jackson2JsonMessageConverter();}
}

3. 消息体
   对于生产者来说，是map类型的，则生成者接收的时候也是map类型
   例如：

@Component
public class RabbitMqListener {@RabbitListener(queues="${spring.rabbitmq.producer.queue1}")public void counsume(Map<String,Objecct> msg){System.out.pringln("消费者收到 topic.queue1队列发的消息",msg);}}

五 案例演示

支付服务支付成功后通知交易服务进行后续操作

生产者和消费者两个服务都需要进行1,2，3步骤

1. 添加依赖

<!--mq依赖-->
<dependency><groupId>org.springframework.book</groupId><artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<!--消息转换器依赖-->
<dependency><groupId>com.fasterxml.jackson</groupId><artifactId>jasckson-databind</artifactId>
</dependency>

2. 添加MQ配置信息

spring:rabbitmq:host: 192.168.150.101 #主机ipport: 5672 #端口virtual-host: /hmall #虚拟主机username: hmall #用户名password: 123 #密码exchange: pay.topicqueue: mark.order.pay.queueroutKingKey: pay.success

3. 消息转换器配置类

@Component
public class JacksonMessageConvertor{@Beanpublic MessageCoverter jacksonMessageConvertor(){return new Jackson2JsonMessageConverter();}
}

4. 生产者
   （1）生产者的配置

@Component
public class Rabbitroducer {@Autowiredprivate RabbitTemplate rabbitTemplete;@value("${spring.rabbitmq.queue})private String queueName;@value("${spring.rabbitmq.routingKey})private String routingKey;/*** 入参说明：* 第一个参数：queueName：队列名称* 第二个参数：路由键，fanout类型不需要路由键* 第三个参数：msg 消息题内容*/public void sendMsg(String msg){// 发送消息rabbitTemplete.covertAndSend(queueName,routingKey, msg);}
}

（2）业务代码支付成功发送消息

public class payOrderServiceImpl impletement PayOrderService{@Autowridprivate RabbitProducer payProducer;@Overirid@Transactional(rollback = Exception.class)public void payOrder(PayOrderDto payOrder){// 一些列操作最终交易成功// 发送消息通知try{payProducer.send(payOrder.getId());}catch(AmqpException e){log.error("交易成功，发送消息异常：{}",e.getMessages(););}}
}

5. 消费者

@Component
public class PaySatusListener {@Autowiredprivate OrderService orderService;@RabbitListener(bindings = @QueueBinding(value = Queue(name="${spring.rabbitmq.queue}",durable="true"),exchange = @Exchange(name="${spring.rabbitmq.exchange)",type=ExchangeType.TOPIC),key = {"${spring.rabbitmq.routingKey}"}	))public void listenOrderPay(Long orderId){//标记订单为已支付orderService.markOrderPaySuccess(orderId);}}