准备阶段
安装redis,可参考我的另一篇文章
java 1.8
maven 3.0
idea
环境依赖
创建一个新的springboot工程，了解springcloud架构可以加求求：三五三六二四七二五九。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>创建一个消息接收者
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(); }}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); }注入消息监听容器
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"); }测试
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); }
