我在生产项目里是如何使用Redis发布订阅的？（二）Java版代码实现（含源码）

public interface ICacheUpdate {
    public void update();
}

public class InfoService implements ICacheUpdate {
	private static Logger logger = LoggerFactory.getLogger(InfoService.class);
	@Autowired
	private RedisCache redisCache;
	@Autowired
	private InfoMapper infoMapper;
	/**
	 * 按信息类型分类查询信息
	 * @return
	 */
	public Map<String, List<Map<String, Object>>> selectAllInfo(){
		Map<String, List<Map<String, Object>>> resultMap = new HashMap<String, List<Map<String, Object>>>();
		List<String> infoTypeList = infoMapper.selectInfoType();//信息表中所有涉及的信息类型
		logger.info("-------按信息类型查找公共信息开始----"+infoTypeList);
		if(infoTypeList!=null && infoTypeList.size()>0) {
			for (String infoType : infoTypeList) {
				List<Map<String, Object>> result = infoMapper.selectByInfoType(infoType);
				resultMap.put(infoType, result);
			}
		}
		return resultMap;
	}
	@Override
	public void update() {
		//缓存首页信息
		logger.info("InfoService selectAllInfo 刷新缓存");
		Map<String, List<Map<String, Object>>> resultMap = this.selectAllInfo();
		Set<String> keySet = resultMap.keySet();
		for(String key:keySet){
			List<Map<String, Object>> value = resultMap.get(key);
			redisCache.putObject(GlobalSt.PUBLIC_INFO_ALL+key, value);
		}
	}
}

/**
 * Redis发布订阅的扩展类
 * 作用：1、统一管理ICacheUpdate，把所有实现ICacheUpdate接口的类添加到updates容器
 * 2、重写onMessage方法，订阅到消息后进行刷新缓存的操作
 */
public class RedisMsgPubSub extends JedisPubSub {
    private static Logger logger = LoggerFactory.getLogger(RedisMsgPubSub.class);
    private Map<String , ICacheUpdate> updates = new HashMap<String , ICacheUpdate>();
    //1、由updates统一管理ICacheUpdate
    public boolean addListener(String key , ICacheUpdate update) {
        if(update == null) 
            return false;
	updates.put(key, update);
	return true;
    }
    /**
     * 2、重写onMessage方法，订阅到消息后进行刷新缓存的操作
     * 订阅频道收到的消息
     */
    @Override  
    public void onMessage(String channel, String message) {
        logger.info("RedisMsgPubSub onMessage channel:{},message :{}" ,channel, message);
        ICacheUpdate updater = null;
        if(StringUtil.isNotEmpty(message)) 
            updater = updates.get(message);
        if(updater!=null)
            updater.update();
    }
    //other code...
}

public class PubSubManager extends Thread{
    private static Logger logger = LoggerFactory.getLogger(PubSubManager.class);

    public static Jedis jedis;
    RedisMsgPubSub msgPubSub = new RedisMsgPubSub();
    //频道
    public static final String PUNSUB_CONFIG = "pubsub_config";
    //1.将所有需要刷新加载的Service类（实现ICacheUpdate接口）添加到RedisMsgPubSub的updates中
    public boolean addListener(String key, ICacheUpdate listener){
        return msgPubSub.addListener(key,listener);
    }
    @Override
    public void run(){
        while (true){
            try {
                JedisPool jedisPool = SpringTools.getBean("jedisPool", JedisPool.class);
                if(jedisPool!=null){
                    jedis = jedisPool.getResource();
                    if(jedis!=null){
                        //2.启动线程订阅pubsub_config频道 阻塞
                        jedis.subscribe(msgPubSub,PUNSUB_CONFIG);
                    }
                }
            } catch (Exception e) {
                logger.error("redis connect error!");
            } finally {
                if(jedis!=null)
                    jedis.close();
            }
            try {
                //3.收到消息后的五秒后再次订阅（避免订阅到一次消息后结束订阅）
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                logger.error("InterruptedException in redis sleep!");
            }
        }
    }
}

/**
 * 加载系统参数
 */
public class CacheInitListener implements ServletContextListener{
    private static Logger logger = LoggerFactory.getLogger(CacheInitListener.class);
    @Override
    public void contextDestroyed(ServletContextEvent arg0) {
    }
    @Override
    public void contextInitialized(ServletContextEvent arg0) {
        logger.info("---CacheListener初始化开始---");
        init();
        logger.info("---CacheListener初始化结束---");
    }
    public void init() {
        try {
            //获得管理器
            PubSubManager pubSubManager = SpringTools.getBean("pubSubManager", PubSubManager.class);

            InfoService infoService = SpringTools.getBean("infoService", InfoService.class);
            //添加到管理器
            pubSubManager.addListener("infoService", infoService);
            //other service...

            //启动线程执行订阅操作
            pubSubManager.start();
            //初始化加载
            loadParamToRedis();
        } catch (Exception e) {
            logger.info(e.getMessage(), e);
        }
    }
    private void loadParamToRedis() {
        InfoService infoService = SpringTools.getBean("infoService", InfoService.class);
        infoService.update();
        //other service...
    }
}

<listener>
	<listener-class>com.xxx.listener.CacheInitListener</listener-class>
</listener>