.net core BS生成文件并下载到客户端

           这里是具体的调用var codeModelStr = new CreateModel().Create(db_table);WriteFiles(codeModelStr, "" + tableName, dataStr); string path = AppDomain.CurrentDomain.BaseDirectory + @"\\CreateCode\\"; //生成压缩文件（http不允许同个请求多个文件下载）ZipFile.CreateFromDirectory(path + dataStr, path + @"\\" + dataStr + ".zip");下方是具体方法实现/// <summary>/// 文件流写入文件/// </summary>/// <param name="codeStr"></param>public void WriteFiles(string codeStr, string className, string dataStr){string path = AppDomain.CurrentDomain.BaseDirectory;string filePath = path + @"\\CreateCode\\" + dataStr;string fileName = className + ".cs";string fullFilePath = filePath + @"\\" + fileName;//如果文件夹不存在就创建if (!Directory.Exists(filePath))Directory.CreateDirectory(filePath);if (!System.IO.File.Exists(filePath)){StreamWriter sw;sw = System.IO.File.CreateText(fullFilePath);sw.WriteLine(codeStr.ToString());sw.Close();}}/// <summary>/// 删除文件(包括压缩包和文件夹，客户端延时30秒调用此方法)/// </summary>/// <param name="fileName"></param>/// <returns></returns>public ActionResult DeleteFiles(string fileName){string filePath = AppDomain.CurrentDomain.BaseDirectory + @"CreateCode\\" + fileName;string zipPath = AppDomain.CurrentDomain.BaseDirectory + @"CreateCode\\" + fileName + ".zip";//删除压缩文件if (System.IO.File.Exists(zipPath))System.IO.File.Delete(zipPath);//删除文件夹if (Directory.Exists(filePath)){//循环删除文件夹中文件foreach (string d in Directory.GetFileSystemEntries(filePath)){if (System.IO.File.Exists(d)){System.IO.File.Delete(d);}}//删除文件夹Directory.Delete(filePath);}return Json(null);}/// <summary>/// 文件下载/// </summary>/// <param name="filePath"></param>/// <param name="fileName"></param>/// <returns></returns>public ActionResult Download(string fileName){string filePath = AppDomain.CurrentDomain.BaseDirectory + @"\\CreateCode\\" + fileName + ".zip";fileName = fileName + ".zip";Encoding encoding;string outputFileName = null;fileName = fileName.Replace("'", "");string browser = Request.UserAgent.ToUpper();if (browser.Contains("MS") == true && browser.Contains("IE") == true){outputFileName = HttpUtility.UrlEncode(fileName);encoding = Encoding.Default;}else if (browser.Contains("FIREFOX") == true){outputFileName = fileName;encoding = Encoding.GetEncoding("GB2312");}else{outputFileName = HttpUtility.UrlEncode(fileName);encoding = Encoding.Default;}FileStream fs = new FileStream(filePath, FileMode.Open);byte[] bytes = new byte[(int)fs.Length];fs.Read(bytes, 0, bytes.Length);fs.Close();Response.Charset = "UTF-8";Response.ContentType = "application/octet-stream";Response.ContentEncoding = encoding;Response.AddHeader("Content-Disposition", "attachment; filename=" + outputFileName);Response.BinaryWrite(bytes);Response.Flush();Response.End();return new EmptyResult();}前端部分：<a id="btn_download" href="" style="display:none">下载</a>$.ajax({url: '/Home/CreateGenerator',async: false,data: subData,dataType: "json",type: "post",success: function (resData) {//重新刷新所有样式form.render();layer.msg(resData.msg, { icon: resData.icon, time: 2000 });if (resData.code == 200) {$("#btn_download").attr("href", "/Home/Download?fileName=" + resData.data)//启动下载setTimeout(function () {$("#btn_download")[0].click();}, 500)//启动删除,延时30秒执行，避免出现删除时文件没下载完成setTimeout(function () {$.ajax({url: '/Home/DeleteFiles',async: false,data: { fileName: resData.data },dataType: "json",type: "post",success: function (resData) {}});}, 10000)}}});