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                # 組件源碼 /** * <b>方法描述:</b> 獲取字段值 <br/> * <b>創建者:</b> admin <br/> * <b>創建時間:</b> 2018-05-09 09:41:51 <br/> * * @param key * 入參|key|{@link java.lang.String} * @param field * 入參|字段|{@link java.lang.String} * @param value * 出參|value|{@link java.lang.String} * @return -1 異常<br/> * 0 字段不存在<br/> * 1 成功<br/> */ @Component(label = "獲取字段值", style = "判斷型", type = "同步組件", comment = "如果該key對應的值是一個Hash表,則返回對應字段的值。 如果不存在該字段,或者key不存在,則返回一個'nil'值", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-09 09:41:51") @InParams(param = { @Param(name = "key", comment = "key", type = java.lang.String.class), @Param(name = "field", comment = "字段", type = java.lang.String.class) }) @OutParams(param = { @Param(name = "value", comment = "value", type = java.lang.String.class) }) @Returns(returns = { @Return(id = "-1", desp = "異常"), @Return(id = "0", desp = "字段不存在"), @Return(id = "1", desp = "成功") }) public static ResultBase P_hget(String key, String field) { try { String obj = (String) redisTemplate.opsForHash().get(key, field); if (!obj.equalsIgnoreCase("null")) return ResultBase.newSuccessResult(obj); } catch (Exception e) { AppLog.error(e); return ResultBase.newExceptionResult("TPTR1002", "獲取字段值 異常:" + AppLog.errorMsg(e)); } return ResultBase.newFailureResult("TPTR1003", "key或字段field不存在"); } 交易中組件使用方式: ![](https://img.kancloud.cn/f3/3f/f33ff4b3e5cd1af2922d195629590a9f_1427x1140.jpg) ## 參數說明及示例 key:redis中的key,示例: `"test"` 字段:需要獲取值的字段名,示例: `"label"` value:redis中獲取到的值,示例: `__INNER__["result"]` > 如果該key對應的值是一個Hash表,則返回對應字段的值。 如果不存在該字段,或者key不存在,則返回一個'null'值
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