Redis发布订阅模式

1、创建发送者

TEST_CHANNEL 为自定义通道，发送者将消息发送到通道中，接受者订阅了这个通道就可以获取到信息

@Component
public class RedisSender {
	public static final String TEST_CHANNEL = "test_channel";

	@Autowired
	private RedisTemplate redisTemplate;

	public void send(String channel, String message) {
		redisTemplate.convertAndSend(channel, message);
	}
}

2、创建订阅者

现在接受到了消息只是简单的打印了出来

@Component
public class RedisRecipient implements MessageListener {
	public static final String TEST_CHANNEL = "test_channel";

	@Override
	public void onMessage(Message message, byte[] pattern) {
		System.out.println("接受到的信息为：" + message.toString());
	}
}

3、配置消息监听

@Configuration
public class RedisConfig {

	/**
	 * 配置消息监听
	 */
	@Bean
	public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory, RedisRecipient redisRecipient) {
		RedisMessageListenerContainer container = new RedisMessageListenerContainer();
		container.setConnectionFactory(connectionFactory);

		// 订阅频道
		Topic topic = new PatternTopic(RedisRecipient.TEST_CHANNEL);

		// 使用监听器监听Redis的消息
		container.addMessageListener(redisRecipient, topic);
		return container;
	}
}

4、测试

@SpringBootTest
public class RedisTest {
	@Resource
	private RedisSender redisSender;

	@Test
	public void test02() {
		redisTemplate.opsForValue().set("cKey", "11");
		Object cKey = redisTemplate.opsForValue().get("cKey");
		System.out.println(cKey);

		redisSender.send(RedisSender.TEST_CHANNEL, "你好");
	}

}