本篇内容主要讲解“怎么在springboot中用redis实现消息队列”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“怎么在springboot中用redis实现消息队列”吧!
安装redis
java 1.8
maven 3.0
idea
创建一个新的springboot工程,在其pom文件,加入spring-boot-starter-data-redis依赖:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
REcevier类,它是一个普通的类,需要注入到springboot中。
public class Receiver {
private static final Logger LOGGER = LoggerFactory.getLogger(Receiver.class);
private CountDownLatch latch;
@Autowired
public Receiver(CountDownLatch latch) {
this.latch = latch;
}
public void receiveMessage(String message) {
LOGGER.info("Received <" + message + ">");
latch.countDown();
}
}
@Bean
Receiver receiver(CountDownLatch latch) {
return new Receiver(latch);
}
@Bean
CountDownLatch latch() {
return new CountDownLatch(1);
}
@Bean
StringRedisTemplate template(RedisConnectionFactory connectionFactory) {
return new StringRedisTemplate(connectionFactory);
}
在spring data redis中,利用redis发送一条消息和接受一条消息,需要三样东西:
一个连接工厂
一个消息监听容器
Redis template
上述1、3步已经完成,所以只需注入消息监听容器即可:
@Bean
RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
MessageListenerAdapter listenerAdapter) {
RedisMessageListenerContainer container = new RedisMessageListenerContainer();
container.setConnectionFactory(connectionFactory);
container.addMessageListener(listenerAdapter, new PatternTopic("chat"));
return container;
}
@Bean
MessageListenerAdapter listenerAdapter(Receiver receiver) {
return new MessageListenerAdapter(receiver, "receiveMessage");
}
在springboot入口的main方法:
public static void main(String[] args) throws Exception{
ApplicationContext ctx = SpringApplication.run(SpringbootRedisApplication.class, args);
StringRedisTemplate template = ctx.getBean(StringRedisTemplate.class);
CountDownLatch latch = ctx.getBean(CountDownLatch.class);
LOGGER.info("Sending message...");
template.convertAndSend("chat", "Hello from Redis!");
latch.await();
System.exit(0);
}
先用redisTemplate发送一条消息,接收者接收到后,打印出来。启动springboot程序,控制台打印:
2017-04-20 17:25:15.536 INFO 39148 —- [ main] com.forezp.SpringbootRedisApplication : Sending message…
2017-04-20 17:25:15.544 INFO 39148 —- [ container-2] com.forezp.message.Receiver : 》Received
测试通过,接收者确实接收到了发送者的消息。
到此,相信大家对“怎么在springboot中用redis实现消息队列”有了更深的了解,不妨来实际操作一番吧!这里是亿速云网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!
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原文链接:https://my.oschina.net/u/4588934/blog/4592630