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:吃透前端工程化,大厂级实战我的项目以战带练
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:https://www.97yrbl.com/t-1383.html
@Componentpublic class RedisUtil { public static RedisUtil util; public RedisUtil(@Autowired JedisPool jedisPool) { this.jedisPool = jedisPool; RedisUtil.util = this; } public static RedisUtil getInstance(){ return util; } @Autowired private JedisPool jedisPool; /** * 向Redis中存值,永恒无效 */ public String set(String key, String value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.set(key, value); } catch (Exception e) { return "0"; } finally { jedis.close(); } } /** * 依据传入Key获取指定Value */ public String get(String key) { Jedis jedis = null; String value; try { jedis = jedisPool.getResource(); value = jedis.get(key); } catch (Exception e) { return "0"; } finally { jedis.close(); } return value; } /** * 校验Key值是否存在 */ public Boolean exists(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.exists(key); } catch (Exception e) { return false; } finally { jedis.close(); } } /** * 删除指定Key-Value */ public Long del(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.del(key); } catch (Exception e) { return 0L; } finally { jedis.close(); } } /** * 分布式锁 * @param key * @param value * @param time 锁的超时工夫,单位:秒 * * @return 获取锁胜利返回"OK",失败返回null */ public String getDistributedLock(String key,String value,int time){ Jedis jedis = null; String ret = ""; try { jedis = jedisPool.getResource(); ret = jedis.set(key, value, new SetParams().nx().ex(time)); return ret; } catch (Exception e) { return null; } finally { jedis.close(); } } public void pub(){ jedisPool.getResource().publish("test","msg"); } }