redis-广播

依赖

<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<version>2.3.12.RELEASE</version>

发布端

stringRedisTemplate.convertAndSend(channel, JSON.toJSONString(event));
# 参数说明 channel  通道key；JSON.toJSONString(event)  发布的内容,json格式解析方便，较为通用

消费端

配置

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Primary;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.listener.ChannelTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.stereotype.Component;

/**
 */
@Component
public class RedisPubSubConfig {

    private static RedisMessageListenerContainer listenerContainer;

    @Primary
    @Bean
    public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        RedisPubSubConfig.listenerContainer = container;
        return container;
    }

    @Component
    public static class RedisListenerConfig{

        @Autowired
        public RedisListenerConfig(RedisMessageListenerContainer redisMessageListenerContainer,
                                   ConfigReadMessageRedisSubListener configReadMessageRedisSubListener,
                                   ConfigWriteMessageRedisSubListener configWriteMessageRedisSubListener,
                                   SerialChangeStatusRedisSubListener serialChangeStatusRedisSubListener,
                                   SerialPortMessageRedisSubListener serialPortMessageRedisSubListener,
                                   VpnMessageRedisSubListener vpnMessageRedisSubListener,
                                   VpnStatusChangeRedisSubListener vpnStatusChangeRedisSubListener) {
            // 监听的通道及对应处理类                       
            redisMessageListenerContainer.addMessageListener(configReadMessageRedisSubListener,
                    new ChannelTopic(RedisKey.DEVICE_CONFIGURE_PANEL_READ_REDIS_CHANNEL));
            redisMessageListenerContainer.addMessageListener(configWriteMessageRedisSubListener,
                    new ChannelTopic(RedisKey.DEVICE_CONFIGURE_PANEL_WRITE_REDIS_CHANNEL));
            redisMessageListenerContainer.addMessageListener(serialChangeStatusRedisSubListener,
                    new ChannelTopic(RedisKey.CLIENT_SERIAL_CHANGE_REDIS_CHANNEL));
            redisMessageListenerContainer.addMessageListener(serialPortMessageRedisSubListener,
                    new ChannelTopic(RedisKey.CLIENT_SERIAL_MESSAGE_REDIS_CHANNEL));
            redisMessageListenerContainer.addMessageListener(vpnMessageRedisSubListener,
                    new ChannelTopic(RedisKey.CLIENT_VPN_MESSAGE_REDIS_CHANNEL));
            redisMessageListenerContainer.addMessageListener(vpnStatusChangeRedisSubListener,
                    new ChannelTopic(RedisKey.CLIENT_VPN_STATUS_CHANGE_REDIS_CHANNEL));
        }

    }

}

处理类

import com.alibaba.fastjson.JSON;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.stereotype.Component;

import java.nio.charset.StandardCharsets;

@Component
public class ConfigReadMessageRedisSubListener implements MessageListener {


    @Override
    public void onMessage(Message message, byte[] pattern) {
        byte[] messageBody = message.getBody();
        // 消息体
        String body = new String(messageBody, StandardCharsets.UTF_8);
        ObjectAAA event = JSON.parseObject(body, ObjectAAA.class);
    }

}