springboot整合消息队列——RabbitMQ

RabbitMQ常用的三种Exchange Type：fanout、direct、topic。

1. fanout:把所有发送到该Exchange的消息投递到所有与它绑定的队列中。
2. direct:把消息投递到那些binding key与routing key完全匹配的队列中。
3. topic:将消息路由到binding key与routing key模式匹配的队列中。

这里基于springboot整合​ ​消息队列​ ​，测试这三种Exchange。

• 启动RabbitMQ

双击运行rabbitmq-server.bat

• SpringBoot整合RabbitMQ——Direct模式（默认模式）

创建springboot web项目——发送者 springboot-sender

追加测试和rabbitmq所需的依赖

<!-- 添加springboot对amqp的支持 -->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<!--添加测试包-->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-test</artifactId>
</dependency>
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-test</artifactId>
  <version>5.0.9.RELEASE</version>
</dependency>

修改配置文件 application.yml 或  application.properties：

server:
  port: 7001
spring:
  application:
    name: spirngboot-sender
    rabbitmq:
      host: 127.0.0.1
      port: 5672
      username: guest
      password: guest

发送的信息可以是 基本数据类型 也可以是 对象 ，这里创建一个用户对象

public class User implements Serializable{
    private String username;
    private String password;
 
    public String getUsername() {
        return username;
    }
 
    public void setUsername(String username) {
        this.username = username;
    }
 
    public String getPassword() {
        return password;
    }
 
    public void setPassword(String password) {
        this.password = password;
    }
}

创建一个配置类： SenderConfiguration.java

一个名为 queue1 的​ ​队列​ ​

@Configuration
public class SenderConfiguration {
    @Bean
    public Queue directQueue() {
        return new Queue("queue1");
    }
}

创建一个发送信息类： SenderService.java

发送 user 对象给 queue1 队列

@Component
public class SenderService {
    @Autowired
    private AmqpTemplate template;
 
    public void sendUser() {
        User user=new User();
        user.setUsername("张三");
        user.setPassword("123456");
        template.convertAndSend("queue1",user);
    }
}

创建一个测试类： TestRabbitMQ.java

@SpringBootTest(classes=SpringbootSenderApplication.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class TestRabbitMQ {
    @Autowired
    private SenderService senderService;
 
    @Test
    public void testRabbit() {
        senderService.sendUser();
    }
}

运行 testRabbit 方法：

创建springboot web项目——接收者 springboot-receiver

修改配置文件 application.yml 或  application.properties：

server:
  port: 7002
spring:
  application:
    name: spirngboot-receiver
    rabbitmq:
      host: 127.0.0.1
      port: 5672
      username: guest
      password: guest

添加接收类： ReceiverService.java

@Component
public class ReceiverService {
    @RabbitListener(queues="queue1")
    public void receiveUser(User user) {
        System.out.println("username:"+user.getUsername()+" password:"+user.getPassword());
    }
}

运行启动类：SpringbootApplication.java，结果：

信息成功被接收。

SpringBoot整合RabbitMQ——Topic模式（模糊匹配）

步骤与Direct差不多。

发送者：

修改配置类SenderConfiguration.java：

创建两个队列 topic1,topic2，创建一个topic交换器，绑定交换机和队列以及绑定规则

@Test
public void testRabbit() {
    senderService.sendUser();
}@Bean(name="topic1")
public Queue topicQueue1() {
    return new Queue("topic1");
}
@Bean(name="topic2")
public Queue topicQueue2() {
    return new Queue("topic2");
}
 
@Bean
public TopicExchange exchange() {
    //创建一个topic交换器
    return new TopicExchange("topicExchange");
}
@Bean
Binding bindingExchangeTopic1(@Qualifier("topic1") Queue queueMessage, TopicExchange exchange) {
    //设置topic1绑定规则
    return BindingBuilder.bind(queueMessage).to(exchange).with("topic.queue");
}
@Bean
Binding bindingExchangeTopic2(@Qualifier("topic2") Queue queueMessages, TopicExchange exchange) { 
    //设置topic2绑定规则 *表示一个词,#表示零个或多个词
    return BindingBuilder.bind(queueMessages).to(exchange).with("topic.#");
}

修改发送类 SenderService.java ：

User user=new User();
user.setUsername("张三");
user.setPassword("123456");
//发送给topicExchange的交换机
template.convertAndSend("topicExchange","topic.queue",user);
template.convertAndSend("topicExchange","topic.anyting",user);

运行 testRabbit 方法：

成功广播出去两条信息

接收者：

修改接收类 ReceiverService.java ：

@RabbitListener(queues="fanout1")
public void receiveFanout1(User user) {
    System.out.println("队列：fanout1 username:"+user.getUsername()+" password:"+user.getPassword());
}
@RabbitListener(queues="fanout2")
public void receiveFanout2(User user) {
    System.out.println("队列：fanout2 username:"+user.getUsername()+" password:"+user.getPassword());
}

运行启动类，结果：

消息成功被发送接收