java版spring cloud+spring boot+redis社交电子商务平台(十四)在springboot中用redis实现消息队列

电子商务社交平台源码请加企鹅求求:叁五叁六贰四柒贰五九

准备阶段

  • 安装redis,可参考个人另外一篇文章
  • java 1.8
  • maven 3.0
  • idea

环境依赖

建立一个新的springboot工程,在其pom文件,加入spring-boot-starter-data-redis依赖:java

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>复制代码

建立一个消息接收者

REcevier类,它是一个普通的类,须要注入到springboot中。redis

复制代码
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();
    }
}复制代码
复制代码

注入消息接收者

复制代码
@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);
    }复制代码
复制代码

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,须要三样东西:spring

  • 一个链接工厂
  • 一个消息监听容器
  • Redis template

上述一、3步已经完成,因此只需注入消息监听容器便可:springboot

复制代码
@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");
    }复制代码
复制代码

测试

在springboot入口的main方法:bash

复制代码
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);
    }复制代码
复制代码

电子商务社交平台源码请加企鹅求求:叁五叁六贰四柒贰五九
maven

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