轉(zhuǎn)載請標明出處:
http://blog.csdn.net/forezp/article/details/71023652
本文出自方志朋的博客
這篇文章主要講述如何在springboot中用reids實現(xiàn)消息隊列瞬沦。
準備階段
- 安裝redis,可參考我的另一篇文章浮声,5分鐘帶你入門Redis禁荒。
- java 1.8
- maven 3.0
- idea
環(huán)境依賴
創(chuàng)建一個新的springboot工程湿弦,在其pom文件,加入spring-boot-starter-data-redis依賴:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
創(chuàng)建一個消息接收者
REcevier類鸽疾,它是一個普通的類裁赠,需要注入到springboot中蹈集。
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();
}
}
注入消息接收者
@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);
}
注入消息監(jiān)聽容器
在spring data redis中闺兢,利用redis發(fā)送一條消息和接受一條消息桥状,需要三樣東西:
- 一個連接工廠
- 一個消息監(jiān)聽容器
- Redis template
上述1帽揪、3步已經(jīng)完成,所以只需注入消息監(jiān)聽容器即可:
@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");
}
測試
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發(fā)送一條消息辅斟,接收者接收到后转晰,打印出來。啟動springboot程序士飒,控制臺打硬樾稀:
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 <Hello from Redis!>
測試通過,接收者確實接收到了發(fā)送者的消息酵幕。
源碼下載:
https://github.com/forezp/SpringBootLearning
參考資料
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