Springboot项目中,如何使用rabbitmq 实现,点赞、评论、关注系统通知
时间: 2023-11-27 16:51:35 浏览: 117
在Spring Boot项目中使用RabbitMQ实现点赞、评论、关注系统通知,可以按照以下步骤进行:
1. 安装RabbitMQ,并启动RabbitMQ服务。
2. 在项目中引入RabbitMQ相关依赖,可以通过Maven或Gradle等构建工具来实现,例如:
```
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit</artifactId>
<version>2.2.10.RELEASE</version>
</dependency>
```
3. 创建RabbitMQ配置类,配置RabbitMQ连接信息和交换机、队列等信息。例如:
```
@Configuration
public class RabbitMQConfig {
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
connectionFactory.setHost("localhost");
connectionFactory.setUsername("guest");
connectionFactory.setPassword("guest");
connectionFactory.setVirtualHost("/");
connectionFactory.setPort(5672);
return connectionFactory;
}
@Bean
public RabbitTemplate rabbitTemplate() {
return new RabbitTemplate(connectionFactory());
}
@Bean
public DirectExchange directExchange() {
return new DirectExchange("exchange");
}
@Bean
public Queue likeQueue() {
return new Queue("like.queue");
}
@Bean
public Queue commentQueue() {
return new Queue("comment.queue");
}
@Bean
public Queue followQueue() {
return new Queue("follow.queue");
}
@Bean
public Binding likeBinding() {
return BindingBuilder.bind(likeQueue()).to(directExchange()).with("like");
}
@Bean
public Binding commentBinding() {
return BindingBuilder.bind(commentQueue()).to(directExchange()).with("comment");
}
@Bean
public Binding followBinding() {
return BindingBuilder.bind(followQueue()).to(directExchange()).with("follow");
}
}
```
4. 在需要发送消息的地方,使用RabbitTemplate来发送消息。例如:
```
@Autowired
private RabbitTemplate rabbitTemplate;
public void sendLikeMessage(String message) {
rabbitTemplate.convertAndSend("exchange", "like", message);
}
public void sendCommentMessage(String message) {
rabbitTemplate.convertAndSend("exchange", "comment", message);
}
public void sendFollowMessage(String message) {
rabbitTemplate.convertAndSend("exchange", "follow", message);
}
```
5. 在需要接收消息的地方,创建对应的消息监听器,并使用@RabbitListener注解来监听队列。例如:
```
@Component
public class LikeMessageListener {
@RabbitListener(queues = "like.queue")
public void receiveLikeMessage(String message) {
System.out.println("收到点赞消息:" + message);
// 处理点赞消息
}
}
@Component
public class CommentMessageListener {
@RabbitListener(queues = "comment.queue")
public void receiveCommentMessage(String message) {
System.out.println("收到评论消息:" + message);
// 处理评论消息
}
}
@Component
public class FollowMessageListener {
@RabbitListener(queues = "follow.queue")
public void receiveFollowMessage(String message) {
System.out.println("收到关注消息:" + message);
// 处理关注消息
}
}
```
通过以上步骤,就可以在Spring Boot项目中使用RabbitMQ实现点赞、评论、关注系统通知了。