企业级 SpringBoot 教程 （十四）在springboot中用redis实现消息队列

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，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);
    } 

资料和源码来源地址
Spring Cloud大型企业分布式微服务云架构源码请加企鹅求求：yuncode.net