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                # 組件源碼 ``` /** * <b>方法描述:</b> 執行指定方法 <br/> * <b>創建者:</b> admin <br/> * <b>創建時間:</b> 2020-09-11 16:12:11 <br/> * * @param poolName * 入參|數據源|{@link java.lang.String} * @param className * 入參|執行類名|{@link java.lang.String} * @param method * 入參|方法名稱|{@link java.lang.String} * @param paramList * 入參|參數列表|{@link java.util.List} * @param result * 出參|返回值|{@link Object} * @return -1 異常<br/> * 0 失敗<br/> * 1 成功<br/> */ @Component(label = "執行指定方法", style = "判斷型", type = "同步組件", comment = "執行自定義的數據庫操作方法,傳入參數:執行類、執行方法和方法參數列表。不能存在同名方法", version = "1.0.0", deprecated = false, author = "admin", date = "2020-09-11 04:12:11") @InParams(param = {@Param(name = "poolName", comment = "數據源", type = java.lang.String.class), @Param(name = "className", comment = "執行類名", type = java.lang.String.class), @Param(name = "method", comment = "方法名稱", type = java.lang.String.class), @Param(name = "paramList", comment = "參數列表", type = java.util.List.class)}) @OutParams(param = {@Param(name = "result", comment = "返回值", type = Object.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_customMethod(String poolName, String className, String method, List paramList) { try { AppLog.debug("數據庫 執行指定方法,poolName={},className={},method={},paramList={}", poolName, className, method, paramList); if (StringUtil.isEmpty(className)) { return ResultBase.newFailureResult("TPTD0027", "參數錯誤:執行類參數【className】不能為空"); } if (StringUtil.isEmpty(method)) { return ResultBase.newFailureResult("TPTD0028", "參數錯誤:執行類參數【method】不能為空"); } setDatasource(poolName); Object maper = BundleUtil.getService(className); if (maper == null) { return ResultBase.newFailureResult("TPTD0010", "錯誤:當前環境未找到[" + className + "]的可用數據庫操作Mapper 實例"); } Method m = getMethod(maper.getClass(), className, method); if (m != null) { AppLog.debug("開始執行相應的Mapper 方法:" + method); Object obj = null; if (paramList == null || paramList.isEmpty()) obj = m.invoke(maper); else obj = m.invoke(maper, paramList.toArray()); return ResultBase.newSuccessResult(obj); } } catch (Exception e) { AppLog.error(e); return ResultBase.newExceptionResult("TPTD0029", "執行數據庫方法錯誤,className=" + className + ",method=" + method + AppLog.errorMsg(e)); } return ResultBase.newFailureResult("TPTD0030", "數據庫 執行指定方法 組件 中沒有找到相應的執行方法。"); } ``` # 交易中組件使用方式 ![](https://img.kancloud.cn/eb/c3/ebc3683cd46b00c56427d6705ae03dfe_1870x893.png) # 參數說明及示例 ## 入口參數 數據源名稱:使用的數據源名稱,可以為空 執行操作類名:執行 SQL 語句的類,示例: `"data.test.test.mapper.TUserMapper"` 方法名稱:執行的方法名,示例: `"selectById"` 參數列表:方法需要的參數,示例: `[1]` ## 出口參數 返回值:執行方法后返回的結果,示例: `__INNER__["result"]` > 當交易部署到微服務上時,數據源在微服務界面上配置。
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