asp.net mvc實現html轉PDF

說明：

1. 當傳遞的參數字符過多時需將其壓縮纔可以進行get的請求；
2. _domain是配置文件中的配置：<add key="Domain" value="http://localhost/hotelSys" /> ；
3. _hqPdfFilePath同樣是配置文件的PDF保存路徑；
4. HtmlToPdf.exe是一個程序，可以前往下載，下載地址：  https://download.csdn.net/download/qq_35481871/12197661
5. 在asp.net mvc中如何用return File實現下載文件時，需要注意的是將下載文件名進行編碼Url.Encode(downName)，否則可能出現錯誤或文件名亂碼

        protected static readonly string _domain = ConfigurationManager.AppSettings["Domain"];

        /// <summary>
        /// 下載Pdf行程單
        /// </summary>
        /// <param name="RouteBase"></param>
        /// <param name="RouteList"></param>
        /// <param name="DownName"></param>
        /// <returns></returns>
        [HttpPost]
        public ActionResult DownSchedulePdf(string RouteBase, string RouteList, string DownName)
        {
            var downName = DownName + ".pdf";//下載名稱
            var pdfname = "hq" + DateTime.Now.ToString("HHmmssffff") + ".pdf";//保存pdf名稱            
            var _pdfFilePath = _hqPdfFilePath + pdfname;//pdf文件路徑
            try
            {
                #region 壓縮字符串
                byte[] b1 = Compress(RouteBase);
                var routeBase = Convert.ToBase64String(b1);

                byte[] b2 = Compress(RouteList);
                var routeList = Convert.ToBase64String(b2);
                #endregion

                var pageUrl = "";
                if (_mvcTest == "Y")
                {
                    pageUrl = "http://localhost" + Url.Action("SchedulePdf", "DownLoad", new { RouteBase = routeBase, RouteList = routeList });
                }
                else
                {
                    pageUrl = _domain + Url.Action("SchedulePdf", "DownLoad", new { RouteBase = routeBase, RouteList = routeList });
                }

                //判斷是否有該路徑 沒有則創建
                if (!Directory.Exists(_hqPdfFilePath))
                {
                    Directory.CreateDirectory(_hqPdfFilePath);
                }
                
                #region 調用html轉pdf接口
                //程序
                string str = Server.MapPath("~/Exes/HtmlToPdf.exe");
                //參數
                var arguments = " \"" + pageUrl + "\" " + _pdfFilePath;
                Process p = Process.Start(str, arguments);
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;
                p.WaitForExit();//等待進程關閉或退出執行以下步驟
                p.Close();
                #endregion
            }
            catch (Exception e)
            {
                Log.InfoFormat("error:{0}", e.Message);
            }
            return File(_pdfFilePath, "text/plain", Url.Encode(downName));
        }