# 組件源碼 ``` /** * <b>方法描述：</b> 獲取系統變量 <br/> * <b>創建者：</b> admin <br/> * <b>創建時間：</b> 2020-12-18 16:08:04 <br/> * * @param varkey * 入參|變量名稱|{@link java.lang.String} * @param def * 入參|默認值|{@link java.lang.String} * @param varValue * 出參|變量值|{@link java.lang.String} * @return 1 成功<br/> */ @Component(label = "獲取系統變量", style = "判斷型", type = "同步組件", comment = "獲得系統變量，調用system.getProperty", version = "1.0.0", deprecated = false, author = "admin", date = "2020-12-18 04:08:04") @InParams(param = {@Param(name = "varkey", comment = "變量名稱", type = java.lang.String.class), @Param(name = "def", comment = "默認值", type = java.lang.String.class)}) @OutParams(param = {@Param(name = "varValue", comment = "變量值", type = java.lang.String.class)}) @Returns(returns = {@Return(id = "1", desp = "成功")}) @Order(value = 2) public static ResultBase P_getSysVar(String varkey, String def) { if (!StringUtil.isEmpty(def)) return ResultBase.newSuccessResult(System.getProperty(varkey, def)); else return ResultBase.newSuccessResult(System.getProperty(varkey)); } ``` # 交易中組件使用方式  # 參數說明及示例 ## 入口參數 變量名稱：輸入想要獲取的變量名稱，示例： `"user.home"` 默認值：可以填，也可以不填 ## 出口參數 變量值：根據輸入參數，返回的變量值，示例： `__INNER__["result"]`