# 組件源碼 ``` /** * <b>方法描述：</b> 統計字節數 <br/> * <b>創建者：</b> admin <br/> * <b>創建時間：</b> 2018-05-08 18:14:16 <br/> * * @param instr * 入參|輸入字符串|{@link java.lang.String} * @param charset * 入參|編碼方式(UTF-8或GBK)|{@link java.lang.String} * @param length * 出參|字節長度|{@link int} * @return -1 異常<br/> * 0 失敗<br/> * 1 成功<br/> */ @Component(label = "統計字節數", style = "處理型", type = "同步組件", comment = "字符串字節數", version = "1.0.0", deprecated = false, author = "admin", date = "2018-05-08 06:14:16") @InParams(param = { @Param(name = "instr", comment = "輸入字符串", type = java.lang.String.class), @Param(name = "charset", comment = "編碼方式(UTF-8或GBK)", type = java.lang.String.class) }) @OutParams(param = { @Param(name = "length", comment = "字節長度", type = int.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_byteLength(String instr, String charset) { if (charset == null || !Charset.isSupported(charset)) { return ResultBase.newFailureResult("TPTS1006", "編碼方式輸入錯誤,charset=" + charset); } try { return ResultBase.newSuccessResult(instr == null ? 0 : instr .getBytes(charset).length); } catch (Exception ex) { AppLog.error(ex); return ResultBase.newExceptionResult("TPTS1007", "編碼方式轉換錯誤:" + AppLog.errorMsg(ex)); } } ``` # 交易中組件使用方式  # 參數說明及示例 ## 入口參數 輸入字符串：輸入一串字符串，示例： `"qwertyuiop"` 編碼方式(UTF-8或GBK)：設置字符串的編碼格式，示例： `"utf-8"` ## 出口參數 字節長度：返回指定編碼集的字節長度，示例： `__INNER__["result"]`