# 组件源码 /** * <b>方法描述：</b> 列表长度 <br/> * <b>创建者：</b> admin <br/> * <b>创建时间：</b> 2018-05-09 09:53:34 <br/> * * @param key * 入参|key|{@link java.lang.String} * @param length * 出参|列表长度|{@link long} * @return -1 异常<br/> * 1 成功<br/> */ @Component(label = "列表长度", style = "判断型", type = "同步组件", comment = "list的长度,key不存在 0", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-09 09:53:34") @InParams(param = { @Param(name = "key", comment = "key", type = java.lang.String.class) }) @OutParams(param = { @Param(name = "length", comment = "列表长度", type = long.class) }) @Returns(returns = { @Return(id = "-1", desp = "异常"), @Return(id = "1", desp = "成功") }) public static ResultBase P_length(String key) { try { long obj = redisTemplate.opsForList().size(key); return ResultBase.newSuccessResult(obj); } catch (Exception e) { AppLog.error(e); return ResultBase.newExceptionResult("TPTR2003", "列表长度 异常：" + AppLog.errorMsg(e)); } } 交易中组件使用方式：  ## 参数说明及示例 key：redis中的key，示例： `"qwer"` 列表长度：返回redis对应key值长度，示例： `__INNER__["size"]` > list的长度,key不存在 0