使用SSIS生成数据导出为Excel文件的模板

关键脚本（C#语言）

/// <summary>
        /// This method is called when this script task executes in the control flow.
        /// Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
        /// To open Help, press F1.
        /// </summary>
        public void Main()
        {
            // TODO: Add your code here
            //string ssis_file_folder = @"d:\ssis_demo_workspace";
            
            string ddl_script = Dts.Variables["User::Var_ExcelDDL"].Value.ToString();//创建工作表的脚本
            string excel_Folder = Dts.Variables["User::Var_ExcelFolder"].Value.ToString(); //Excel文件的存放目录
            string excel_fileName_template = Dts.Variables["User::Var_ExcelFileName"].Value.ToString();//Excel文件名称模板
            string ddl_script_file = Dts.Variables["User::Var_ExcelDDL_File"].Value.ToString();//创建工作表的脚本文件
            string Param_ExcelDDL = Dts.Variables["$Package::Param_ExcelDDL"].Value.ToString();

            if (string.IsNullOrWhiteSpace(excel_Folder))
            {
                Dts.TaskResult = (int)ScriptResults.Failure;
                return;
            }

            if (string.IsNullOrWhiteSpace(excel_fileName_template))
            {
                Dts.TaskResult = (int)ScriptResults.Failure;
                return;
            }

            #region if excel folder not exists then create it
            try
            {
                if (!System.IO.Directory.Exists(excel_Folder))
                    System.IO.Directory.CreateDirectory(excel_Folder);
            }
            catch (Exception ex)
            {
                System.IO.File.WriteAllText(excel_Folder + "\\create_excel_log.txt", ex.Message, System.Text.Encoding.UTF8);
                Dts.TaskResult = (int)ScriptResults.Failure;
            }
            #endregion

            if (string.IsNullOrWhiteSpace(ddl_script))
            {
                Dts.TaskResult = (int)ScriptResults.Failure;
                return;
            }
            else
            {
                System.IO.File.WriteAllText(excel_Folder + "\\ddl_log.txt", ddl_script,System.Text.Encoding.UTF8);
            }
            //读取脚本文件中的脚本
            if (System.IO.File.Exists(ddl_script_file))
            {
                ddl_script = System.IO.File.ReadAllText(ddl_script_file, System.Text.Encoding.UTF8);
            }

            string file_name = this.GetFileName(excel_Folder +"\\"+ excel_fileName_template);// 合成Excel文件的绝对路径
            System.IO.File.WriteAllText(excel_Folder + "\\file_name.txt", file_name, System.Text.Encoding.UTF8);

            try
            {
                // TODO: Add your code here
                if (System.IO.File.Exists(file_name))
                    System.IO.File.Delete(file_name);

                this.CreateExcelFile(file_name, ddl_script);
                Dts.TaskResult = (int)ScriptResults.Success;
            }
            catch (Exception ex)
            {
                System.IO.File.WriteAllText(excel_Folder + "\\log.txt", ex.GetType() + Environment.NewLine + ex.Message + Environment.NewLine+ ex.StackTrace, System.Text.Encoding.UTF8);
                Dts.TaskResult = (int)ScriptResults.Failure;
                return;
            }
            Dts.TaskResult = (int)ScriptResults.Success;
            System.IO.File.WriteAllText(excel_Folder + "\\Param_ExcelDDL.txt", Param_ExcelDDL, System.Text.Encoding.UTF8);

        }

创建excel文件和工作表

 /// <summary>
        /// 创建excel文件和工作表
        /// </summary>
        /// <param name="excelFileName">Excel文件存放目录</param>
        /// <param name="sql_script_ddl">ddl建表脚本</param>
        private void CreateExcelFile(string excelFileName,string sql_script_ddl)
        {
            String sConnectionString = string.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 12.0 Xml;HDR=YES'",excelFileName);
            System.IO.File.WriteAllText(System.IO.Path.GetDirectoryName(excelFileName) + "\\sConnectionString.txt", sConnectionString, System.Text.Encoding.UTF8);

            OleDbConnection cn = new OleDbConnection(sConnectionString);
            string sqlCreate = sql_script_ddl;
            OleDbCommand cmd = new OleDbCommand(sqlCreate, cn);
            //创建Excel文件
            cn.Open();
            cmd.ExecuteNonQuery();
            //cmd.CommandText = "INSERT INTO TestSheet VALUES(1,'elmer','password')";
            //cmd.ExecuteNonQuery();
            cn.Close();
            cn.Dispose();
        }

生成新的文件名称：

        /// <summary>
        /// (d:\exportData20170201.xlsx
        /// </summary>
        /// <param name="filePattern">格式化前的文件名称模板</param>
        /// <returns>新的文件名称</returns>
        private string GetFileName(string filePattern)
        {
            return string.Format(filePattern, DateTime.Now.ToString("yyyyMMddHHmm"));
        }