Springboot中使用RabbitMq

代码地址： https://gitee.com/Aes_yt/middleware-demo/tree/master/rabbitmq

安装RabbitMq

1. docker拉取镜像

docker pull rabbitmq:3.9.29-management

2. 创建rabbitmq容器

docker run -d --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:3.9.29-management

3. 访问地址

http://{ip地址}:15672/，可以看到RabbitMq的管理后台界面。账号密码默认 guest

消息生产和消费

rabbitmq-producer

1. 新建module，引入依赖

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

2. yaml配置地址

   spring:
     rabbitmq:
       host: 192.168.67.131
       port: 5672
       username: guest
       password: guest
       virtual-host: /
   

3. 配置交换机

   @Configuration
   public class RabbitMqConfig {
       /*定义交换机名称*/
       public static final String USER_INFO_EXCHANGE_NAME = "user_info_exchange";
   
       @Bean
       public Exchange userInfoExchange() {
           return ExchangeBuilder.topicExchange(USER_INFO_EXCHANGE_NAME).durable(true).build();
       }
   }
   

4. 发送消息

       @Test
       public void sendMessage() {
   
           String registerMsg = "user register..." + new Date();
           // 1. 发送一条注册消息
           rabbitTemplate.convertAndSend(RabbitMqConfig.USER_INFO_EXCHANGE_NAME,
                   "user.register.user1", registerMsg, msg -> {
                       msg.getMessageProperties().setDeliveryMode(MessageDeliveryMode.PERSISTENT);
                       return msg;
                   });
           log.info("消息发送完成:{}", registerMsg);
   
   
           String loginMsg = "user login..." + new Date();
           // 2. 发送一条登录消息
           rabbitTemplate.convertAndSend(RabbitMqConfig.USER_INFO_EXCHANGE_NAME,
                   "user.login.user1", loginMsg, msg -> {
                       msg.getMessageProperties().setDeliveryMode(MessageDeliveryMode.PERSISTENT);
                       return msg;
                   });
           log.info("消息发送完成:{}", loginMsg);
   
       }
   

rabbitmq-consumer

1. 新建module，引入依赖

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

2. yaml配置地址

   spring:
     rabbitmq:
       host: 192.168.67.131
       port: 5672
       username: guest
       password: guest
       virtual-host: /
   

3. 配置队列绑定关系

   @Configuration
   public class RabbitMqConfig {
       @Value("${spring.rabbitmq.host}")
       private String host;
       @Value("${spring.rabbitmq.port}")
       private Integer port;
       @Value("${spring.rabbitmq.username}")
       private String username;
       @Value("${spring.rabbitmq.password}")
       private String password;
   
       /*定义交换机名称*/
       public static final String USER_INFO_EXCHANGE_NAME = "user_info_exchange";
       /*定义队列名称*/
       public static final String USER_REGISTER_QUEUE_NAME = "user_register_queue";
       public static final String USER_LOGIN_QUEUE_NAME = "user_login_queue";
   
       public static final String USER_REGISTER_ROUTING_KEY = "user.register.#";
       public static final String USER_LOGIN_ROUTING_KEY = "user.login.#";
   
       @Bean
       public Exchange userInfoExchange() {
           return ExchangeBuilder.topicExchange(USER_INFO_EXCHANGE_NAME).durable(true).build();
       }
   
       @Bean
       public Queue userRegisterQueue() {
           return QueueBuilder.durable(USER_REGISTER_QUEUE_NAME).build();
       }
   
       @Bean
       public Queue userLoginQueue() {
           return QueueBuilder.durable(USER_LOGIN_QUEUE_NAME).build();
       }
   
       @Bean
       public Binding userRegisterBinding() {
           return BindingBuilder.bind(userRegisterQueue()).to(userInfoExchange()).with(USER_REGISTER_ROUTING_KEY).noargs();
       }
   
       @Bean
       public Binding userLoginBinding() {
           return BindingBuilder.bind(userLoginQueue()).to(userInfoExchange()).with(USER_LOGIN_ROUTING_KEY).noargs();
       }
   
   }
   

4. 监听器

   @Component
   @Slf4j
   public class UserInfoListener {
   
       @RabbitListener(queues = RabbitMqConfig.USER_REGISTER_QUEUE_NAME)
       public void userRegister(String msg){
           log.info(msg);
       }
   
       @RabbitListener(queues = RabbitMqConfig.USER_LOGIN_QUEUE_NAME)
       public void userLogin(String msg){
           log.info(msg);
       }
   }
   

5. 结果

   启动producer项目和consumer项目，producer发送消息，consumer接收到消息:

   producer:

   2023-07-08 10:26:10.660  INFO 7432 --- [main] com.yt.rabbit.RabbitProducerTest: 消息发送完成:user register...Sat Jul 08 10:26:10 CST 2023
   2023-07-08 10:26:10.663  INFO 7432 --- [main] com.yt.rabbit.RabbitProducerTest: 消息发送完成:user login...Sat Jul 08 10:26:10 CST 2023
   

   consumer:

   2023-07-08 10:26:10.661  INFO 25108 --- [ntContainer#1-1] c.yt.rabbitmq.listener.UserInfoListener  : user register...Sat Jul 08 10:26:10 CST 2023
   2023-07-08 10:26:10.665  INFO 25108 --- [ntContainer#0-1] c.yt.rabbitmq.listener.UserInfoListener  : user login...Sat Jul 08 10:26:10 CST 2023
   

交换器类型

交换器类型有四种，fanout，topic，direct，headers。
接下来在代码中创建三种交换器类型，对应的routingKey和queue绑定如表格所示。发送对应消息，看看是否能接收到 [Y/N]。headers类型不演示。

direct 的Routingkey是全匹配，通配符不起作用，所以direct_test_queue2没有接收到消息。
topic 的通配符，*正好匹配一个词，#可以匹配一个或多个词，所以topic_test_queue3没有接收到消息。