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                # 組件源碼 /** * <b>方法描述:</b> 獲取序列號 <br/> * <b>創建者:</b> admin <br/> * <b>創建時間:</b> 2018-05-08 17:40:31 <br/> * * @param poolName * 入參|數據源|{@link java.lang.String} * @param seqName * 入參|序列名稱|{@link java.lang.String} * @param length * 入參|所需長度,不足時左補零|{@link int} * @param seqNum * 出參|序列號|{@link java.lang.String} * @return -1 異常<br/> * 0 失敗<br/> * 1 成功<br/> */ @Component(label = "獲取序列號", style = "判斷型", type = "同步組件", comment = "獲取序列號,支持Oracle/DB2/Informix三種數據庫.所需長度小于數據庫取出序列號時從左邊截取,返回右邊剩余滿足條件序列號,當所需長度大于數據庫取出序列時,左補零后返回", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-08 05:40:31") @InParams(param = { @Param(name = "poolName", comment = "數據源", type = java.lang.String.class), @Param(name = "seqName", comment = "序列名稱", type = java.lang.String.class), @Param(name = "length", comment = "所需長度,不足時左補零", type = int.class) }) @OutParams(param = { @Param(name = "seqNum", comment = "序列號", type = java.lang.String.class) }) @Returns(returns = { @Return(id = "-1", desp = "異常"), @Return(id = "0", desp = "失敗"), @Return(id = "1", desp = "成功") }) public static ResultBase P_getSeqNum(String poolName, String seqName, int length) { if ("".equals(seqName) || seqName == null) { return ResultBase.newFailureResult("TPTJ0020", "入參序列名稱不能為空"); } String sqlNum = null; try { sqlNum = JdbcUtil.getSequence(poolName, seqName, length); } catch (Exception e) { AppLog.error(e); return ResultBase.newExceptionResult("TPTJ0021", "獲取序號值數據庫異常:" + AppLog.errorMsg(e)); } return ResultBase.newSuccessResult(sqlNum); } 交易中組件使用方式: ![](https://img.kancloud.cn/28/5a/285a17e8222e90aefa6a23240ec15cc6_1657x1167.png) 數據源的來源為項目的配置文件中的數據源,以及前端頁面上的數據源管理列表中添加的數據源 ## 參數說明及示例 序列名稱:Oracle/DB2/Informix三種數據庫中的序列名稱,示例: `"sys_user_index"` 所需長度,不足時左補零:返回的序列值長度,當數據庫給出的結果不夠長度時,程序左補零,示例: `5` 序列號:返回的序列號,示例: `__INNER__["index"]`,如返回結果的值為32,但是入參處填寫的所需長度為5,則會在結果前補上3個0,最終的值則為00032 > 注意:填寫值如果是String字符串,則需要在前后加上英文雙引號"",如果是數字或者boolean值,則不需要
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