/// <summary> /// 文件拷贝 /// </summary> /// <param name="src">来源文件物理路径</param> /// <param name="tar">目标文件地址物理路径</param> /// <returns></returns> public static CommonReturn File_Copy(string src, string tar) { try { if (!File.Exists(src)) { return(CommonReturn.Failed("[" + src + "]文件不存在")); } //---safe check if (SafeSC.FileNameCheck(src)) { return(CommonReturn.Failed("[" + src + "]文件名异常")); } if (SafeSC.FileNameCheck(tar)) { return(CommonReturn.Failed("[" + tar + "]文件名异常")); } if (!Directory.Exists(Path.GetDirectoryName(tar))) { Directory.CreateDirectory(Path.GetDirectoryName(tar)); } if (File.Exists(tar)) { File.Delete(tar); } File.Copy(src, tar); } catch (Exception ex) { return(CommonReturn.Failed(ex.Message)); } return(CommonReturn.Success()); }
protected void BtnUpload_Click(object sender, EventArgs e) { long size = FupFile.FileContent.Length; if (size > 10 * 1024 * 1024) { function.Script(this, "alert('文件不能大于10mb');"); return; } M_ModelField fieldmod = fieldBll.GetModelByFieldName(ModelID, FieldName); if (fieldmod == null) { return; } if (SafeSC.FileNameCheck(FupFile.FileName)) { function.Script(this, "alert('此文件格式不允许上传!');"); return; } if (fieldmod.FieldType.Equals("SqlType") && !SafeSC.IsImage(FupFile.FileName)) { function.Script(this, "alert('只能上传图片!');"); return; } string content = fieldmod.Content; Stream filedata = FupFile.FileContent; byte[] filebyte = new byte[filedata.Length]; filedata.Read(filebyte, 0, filebyte.Length); function.Script(this, "parent.DealwithUploadPic('" + FupFile.FileName + "|" + Convert.ToBase64String(filebyte) + "','FIT_" + FieldName + "');"); function.Script(this, "parent.DealwithUploadPic('" + FupFile.FileName + "','txt_" + FieldName + "');"); LblMessage.Text = "文件上传成功"; }
//移入ZIP类 /// <summary> /// 从指定站点下载文件,并保存在指定位置,开始位置,完成度(用于ProgressBar使用) /// </summary> /// <param name="strFileName">本地物理路径</param> /// <param name="strUrl">目标Url</param> public static void DownloadFile(string strFileName, string strUrl, int begin, string flag) { if (SafeSC.FileNameCheck(strFileName)) { throw new Exception(strFileName + "取消保存"); } //已完成的,1%长度 int CompletedLength = 0; long percent = 0; progStatus = "0"; string temp = "0"; long sPosstion = 0; //磁盘现盘文件的长度 //long count = 0;// count += sPosstion,从指定位置开始写入字节 FileStream FStream; if (File.Exists(strFileName)) //如果文件存在 { FStream = File.OpenWrite(strFileName); //打开继续写入,并从尾部开始,用于断点续传 sPosstion = FStream.Length; FStream.Seek(sPosstion, SeekOrigin.Current); //移动文件流中的当前指针 } else { FStream = new FileStream(strFileName, FileMode.Create); sPosstion = 0; } //打开网络连接 try { HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(strUrl); //if (CompletedLength > 0) // myRequest.AddRange((int)CompletedLength);//设置Range值,即头,从指定位置开始接收文件.. //向服务器请求,获得服务器的回应数据流 HttpWebResponse webResponse = (HttpWebResponse)myRequest.GetResponse(); long FileLength = webResponse.ContentLength;//文件大小 percent = FileLength / 100; Stream myStream = webResponse.GetResponseStream(); byte[] btContent = new byte[1024]; //if (count <= 0) count += sPosstion;// //开始写入 int count = 0; while ((count = myStream.Read(btContent, 0, 1024)) > 0) //返回读了多少字节,为0表示全部读完 { FStream.Write(btContent, 0, count); //知道有多少个数字节后再写入 CompletedLength += count; if (!(CompletedLength / percent).ToString().Equals(temp)) { temp = (CompletedLength / percent).ToString(); progStatus = temp; } } myStream.Close(); } finally { FStream.Close(); } }
public IActionResult Index() { string fileVPath = ""; if (!string.IsNullOrEmpty(VPath)) { fileVPath = SafeSC.PathDeal(VPath); if (!fileVPath.ToLower().StartsWith("/uploadfiles/")) { return(WriteErr("该目录下的文件不支持预览")); } } else if (!string.IsNullOrEmpty(FileId)) { B_User_Cloud cloudBll = new B_User_Cloud(); M_User_Cloud cloudMod = cloudBll.SelReturnModel(FileId); if (cloudMod == null) { return(WriteErr("文件不存在!")); } fileVPath = cloudMod.VPath + cloudMod.SFileName; } else { return(WriteErr("未指定文件")); } string filePath = function.VToP(fileVPath); string exName = System.IO.Path.GetExtension(fileVPath).ToLower().Replace(".", "");//doc if (string.IsNullOrEmpty(exName)) { return(WriteErr("文件无后缀名")); } if (!System.IO.File.Exists(filePath)) { return(WriteErr("文件[" + fileVPath + "]不存在")); } if (SafeSC.FileNameCheck(fileVPath)) { return(WriteErr("文件名异常,请去除特殊符号,或更换后缀名")); } else if (exName.Equals("config")) { return(WriteErr("该类型文件不提供预览服务!!")); } /*---------------------------------------------------------------------------------------------------*/ ViewBag.filePath = filePath; ViewBag.fileVPath = fileVPath; ViewBag.exName = exName; return(View()); }
/// <summary> /// 下载文件至服务器,建议异步调用 /// </summary> /// <param name="url">http文件路径</param> /// <param name="vpath">保存,虚拟路径,带文件名</param> /// <param name="flag">标记,用于记录状态(Session)</param> public static void DownFile(string url, string vpath, ProgMod model) { string ppath = function.VToP(vpath); if (SafeSC.FileNameCheck(ppath)) { throw new Exception(vpath + "文件不允许下载"); } //已下载字节,每一进度是多少字节,每次下载多少字节,进度条状态, int byteLen = 2048; FileStream FStream; if (File.Exists(ppath)) { File.Delete(ppath); } FStream = new FileStream(ppath, FileMode.Create); //打开网络连接 try { HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(url); HttpWebResponse webResponse = (HttpWebResponse)myRequest.GetResponse(); model.Percent = webResponse.ContentLength / 100; Stream myStream = webResponse.GetResponseStream(); byte[] btContent = new byte[byteLen]; //开始写入 int count = 0; while ((count = myStream.Read(btContent, 0, byteLen)) > 0) //返回读了多少字节,为0表示全部读完 { FStream.Write(btContent, 0, count); //知道有多少个数字节后再写入 model.CompleteLen += count; model.UpdateProg(); } myStream.Close(); } finally { FStream.Close(); } }
public IActionResult TemplateEdit_Submit() { if (string.IsNullOrEmpty(GetParam("FileName_T"))) { return(WriteErr("未指定文件名称")); } string oldfname = Path.GetFileNameWithoutExtension(RealVPath); string newfname = GetParam("FileName_T"); if (SafeSC.FileNameCheck(newfname)) { return(WriteErr("文件名或后缀名不符合规范,不可包含特殊字符")); } if (string.IsNullOrEmpty(Path.GetExtension(RealVPath))) { SafeSC.WriteFile(FileDir + newfname + ".html", GetParam("textContent")); } else { SafeSC.WriteFile(RealVPath, GetParam("textContent")); } return(WriteOK("保存成功")); }
protected void Page_Load(object sender, EventArgs e) { if (!string.IsNullOrEmpty(Request["vpath"])) { vpath = Server.UrlDecode(Request["vpath"]); while (vpath.Contains("//")) { vpath = vpath.Replace("//", "/"); } } else if (!string.IsNullOrEmpty(Request["File"]))//Guid,Plat_Doc { //检测公司等信息 M_User_Plat upMod = B_User_Plat.GetLogin(); B_Plat_File fileBll = new B_Plat_File(); M_Plat_File fileMod = fileBll.SelReturnModel(Request["File"]); if (upMod == null || upMod.UserID == 0) { function.WriteErrMsg("你尚未登录能力中心,请先登录!"); } if (fileMod == null) { function.WriteErrMsg("文件不存在!"); } if (upMod.CompID != fileMod.CompID) { function.WriteErrMsg("你没有该文档的访问权限!"); } vpath = fileMod.VPath + fileMod.SFileName; } else if (!string.IsNullOrEmpty(Request["CloudFile"])) { B_User_Cloud cloudBll = new B_User_Cloud(); M_User_Cloud cloudMod = cloudBll.SelReturnModel(Request["CloudFile"]); if (cloudMod == null) { function.WriteErrMsg("云端文件不存在!"); } if (cloudMod.UserID != buser.GetLogin().UserID) { function.WriteErrMsg("你无权访问该文件!"); } vpath = cloudMod.VPath + cloudMod.SFileName; } else { function.WriteErrMsg("你没有指定文件"); } vpath = vpath.ToLower().Replace("/uploadfiles/", ""); vpath = "/uploadfiles/" + SafeSC.PathDeal(vpath); string ppath = Server.MapPath(vpath); string exName = Path.GetExtension(vpath).ToLower().Replace(".", "");//doc if (!File.Exists(function.VToP(vpath))) { function.WriteErrMsg(Path.GetFileName(Request.QueryString["vpath"]) + "文件不存在!"); } if (!badmin.CheckLogin() && !buser.CheckLogin()) { function.WriteErrMsg("请先登录,再使用该页面!!!"); } else if (SafeSC.FileNameCheck(vpath)) { function.WriteErrMsg("文件名异常,请去除特殊符号,或更换后缀名"); } else if (Path.GetExtension(vpath).Equals(".config")) { function.WriteErrMsg("为安全考虑,该类型文件不提供预览服务!!"); } /*------------*/ if (!string.IsNullOrEmpty(Request.QueryString["width"])) { viewWidth = Convert.ToInt32(Request.QueryString["width"]); } if (!string.IsNullOrEmpty(Request.QueryString["height"])) { viewHeight = Convert.ToInt32(Request.QueryString["height"]); } /*------------------------------------------------------------------*/ if (WordEx.Contains(exName))//Office类预览 { generalDiv.Visible = true; string pdfPath = vpath + ".pdf"; if (!File.Exists(Server.MapPath(pdfPath))) { Document doc = new Document(ppath); doc.Save(Server.MapPath(pdfPath), SaveFormat.Pdf); } pdfDiv.Visible = true; pdfUrl = VpathToUrl(pdfPath); //if (DeviceHelper.GetBrower() == DeviceHelper.Brower.IE) //{ // function.WriteErrMsg("IE不支持Word预览,请使用Chrome,Edge或其他浏览器"); //} } else if (ExcelEx.Contains(exName)) { //generalDiv.Visible = true; //string pdfPath = vpath + ".pdf"; //if (!File.Exists(Server.MapPath(pdfPath))) //{ // Aspose.Cells.Workbook excel = new Aspose.Cells.Workbook(Server.MapPath(vpath)); // excel.Save(Server.MapPath(pdfPath), Aspose.Cells.SaveFormat.Pdf); //} //pdfDiv.Visible = true; //pdfUrl = VpathToUrl(pdfPath); function.WriteErrMsg("暂未开放Excel预览,请联系官方技术支持!"); } else if (exName.Equals("pdf")) { //if (DeviceHelper.GetBrower() == DeviceHelper.Brower.IE) //{ // function.WriteErrMsg("IE不支持PDF预览,请使用Chrome,Edge或其他浏览器"); //} pdfDiv.Visible = true; pdfUrl = VpathToUrl(vpath); } else if (ImgEx.Contains(exName)) { imgDiv.Visible = true; imgUrl = vpath; } else if (exName.Equals("html") || exName.Equals("htm")) { Server.Transfer(vpath); } else if (exName.Equals("txt")) { ViewTxt.Visible = true; ViewTxt.Text = SafeSC.ReadFileStr(vpath); ViewTxt.Width = viewWidth; ViewTxt.Height = viewHeight; } else if (VideoEx.Contains(exName)) { videoDiv.Visible = true; function.Script(this, "PlayVideo();"); } else { function.WriteErrMsg("暂不支持<span style='color:#0066cc;'>[" + exName + "]</span>格式文件预览,请联系管理员提供支持!!"); } }
/// <summary> /// 从指定服务器上下载文件,支持断点续传 /// </summary> /// <param name="url">目标Url</param> /// <param name="vpath">本地虚拟路径</param> /// <param name="begin">开始位置,默认为0</param> public void DownFile(string url, string vpath, int begin = 0) { vpath = SafeSC.PathDeal(vpath); if (SafeSC.FileNameCheck(vpath)) { throw new Exception("不支持下载[" + Path.GetFileName(vpath) + "]文件"); } string ppath = function.VToP(vpath); //已完成的,1%长度 int CompletedLength = 0; long percent = 0; string temp = "0"; long sPosstion = 0;//磁盘现盘文件的长度 //long count = 0;// count += sPosstion,从指定位置开始写入字节 FileStream FStream; if (File.Exists(ppath)) { FStream = File.OpenWrite(ppath); //打开继续写入,并从尾部开始,用于断点续传(如果不需要,则应该删除其) sPosstion = FStream.Length; FStream.Seek(sPosstion, SeekOrigin.Current); //移动文件流中的当前指针 } else { string dir = Path.GetDirectoryName(ppath); if (!Directory.Exists(dir)) { Directory.CreateDirectory(dir); } FStream = new FileStream(ppath, FileMode.Create); sPosstion = 0; } //打开网络连接 try { HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(url); //if (CompletedLength > 0) // myRequest.AddRange((int)CompletedLength);//设置Range值,即头,从指定位置开始接收文件.. //向服务器请求,获得服务器的回应数据流 HttpWebResponse webResponse = (HttpWebResponse)myRequest.GetResponse(); long FileLength = webResponse.ContentLength;//文件大小 percent = FileLength / 100; Stream myStream = webResponse.GetResponseStream(); byte[] btContent = new byte[1024]; //if (count <= 0) count += sPosstion;// //开始写入 int count = 0; while ((count = myStream.Read(btContent, 0, 1024)) > 0) //返回读了多少字节,为0表示全部读完 { FStream.Write(btContent, 0, count); //知道有多少个数字节后再写入 CompletedLength += count; if (!(CompletedLength / percent).ToString().Equals(temp)) { temp = (CompletedLength / percent).ToString(); //progStatus = temp; } } myStream.Close(); } finally { FStream.Close(); } }
public IActionResult UploadFileHandler() { //HttpRequest Request = context.Request; //context.Response.ContentType = "text/plain"; //context.Request.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); var file = Request.Form.Files["Filedata"]; if (file == null) { file = Request.Form.Files["file"];//接受Uploadify或WebUploader传参,优先Uploadify } if (file == null || file.Length < 1) { return(Content(Failed.ToString())); } if (SafeSC.FileNameCheck(file.FileName)) { throw new Exception("不允许上传该后缀名的文件"); } M_UserInfo mu = buser.GetLogin(); if (adminMod == null && mu.IsNull) { throw new Exception("未登录"); } /*-------------------------------------------------------------------------------------------*/ M_User_Plat upMod = new B_User_Plat().SelReturnModel(mu.UserID); string uploadPath = SiteConfig.SiteOption.UploadDir.TrimEnd('/') + "/", filename = "", ppath = "", result = "0";//上传根目录,文件名,上物理路径,结果 string action = GetParam("action"), value = GetParam("value"); try { switch (action) { #region OA与能力中心 case "OAattach": //OA--公文||事务--附件 //uploadPath += "OA/" + mu.UserName + mu.UserID + "/" + DateTime.Now.ToString("yyyyMMdd") + "/"; uploadPath = ZLHelper.GetUploadDir_User(mu, "OA"); ppath = function.VToP(uploadPath); //判断是否有同名文件的存在 break; case "Blog": //能力中心--博客 uploadPath = B_Plat_Common.GetDirPath(upMod, B_Plat_Common.SaveType.Blog); ppath = function.VToP(uploadPath); break; case "Plat_Doc": //能力中心--我的文档 uploadPath = B_Plat_Common.GetDirPath(upMod, B_Plat_Common.SaveType.Person) + SafeSC.PathDeal(GetParam("Dir")); ppath = function.VToP(uploadPath); break; case "Plat_Doc_Common": //能力中心--公司文档 uploadPath = B_Plat_Common.GetDirPath(upMod, B_Plat_Common.SaveType.Company) + SafeSC.PathDeal(GetParam("Dir")); ppath = function.VToP(uploadPath); break; case "Plat_Task": //能力中心--任务中心附件 int tid = Convert.ToInt32(value); ZoomLa.Model.Plat.M_Plat_Task taskMod = new B_Plat_Task().SelReturnModel(tid); uploadPath = B_Plat_Common.GetDirPath(upMod, B_Plat_Common.SaveType.Plat_Task) + taskMod.TaskName + "/"; break; case "Plat_Project": //能力中心--项目 int pid = Convert.ToInt32(value); ZoomLa.Model.Plat.M_Plat_Pro proMod = new B_Plat_Pro().SelReturnModel(pid); uploadPath = B_Plat_Common.GetDirPath(upMod, B_Plat_Common.SaveType.Plat_Task) + proMod.Name + "/"; break; #endregion case "ModelFile": //组图,多图等 { int nodeid = Convert.ToInt32(value); //M_Node nodeMod = new B_Node().GetNodeXML(nodeid); string exname = Path.GetExtension(file.FileName).Replace(".", ""); //string fpath = nodeMod.NodeDir + "/" + exname + "/" + DateTime.Now.ToString("yyyy/MM/"); uploadPath = ZLHelper.GetUploadDir_System("field", "images", "yyyyMMdd"); filename = DateTime.Now.ToString("HHmmss") + function.GetRandomString(6, 2) + "." + exname; } break; case "admin_custom": //管理员上传,自定义路径 { if (adminMod == null || adminMod.AdminId < 1) { throw new Exception("管理员未登录"); } uploadPath = GetParam("save"); //BannerAdd } break; default: //通常格式,不需做特殊处理的格式但必须登录 if (mu.UserID > 0) { //uploadPath = context.Server.UrlDecode(uploadPath + "User/" + mu.UserName + mu.UserID + "/"); uploadPath = ZLHelper.GetUploadDir_User(mu, "User", "", ""); } else if (adminMod != null) { //uploadPath = context.Server.UrlDecode(uploadPath + "Admin/" + adminMod.AdminName + adminMod.AdminId + "/"); uploadPath = ZLHelper.GetUploadDir_Admin(adminMod, "", "", "yyyyMMdd"); } else { //注册等页面用户未登录 uploadPath = ZLHelper.GetUploadDir_System("user", "register", DateTime.Now.ToString("yyyyMMdd")); } break; } string uploadDir = Path.GetDirectoryName(function.VToP(uploadPath)); if (!Directory.Exists(uploadDir)) { SafeSC.CreateDir(function.PToV(uploadDir)); } if (action.Equals("Plat_Doc") || action.Equals("Plat_Doc_Common")) { #region 能力中心文档 M_Plat_File fileMod = new M_Plat_File(); B_Plat_File fileBll = new B_Plat_File(); fileMod.FileName = file.FileName; fileMod.SFileName = function.GetRandomString(12) + Path.GetExtension(file.FileName); fileMod.VPath = uploadPath.Replace("//", "/"); fileMod.UserID = upMod.UserID.ToString(); fileMod.CompID = upMod.CompID; //SafeSC.SaveFile(uploadPath, file, fileMod.SFileName); fileMod.FileSize = new FileInfo(ppath + fileMod.SFileName).Length.ToString(); fileBll.Insert(fileMod); #endregion } else if (action.Equals("Cloud_Doc")) { #region 用户中心云盘 if (!buser.CheckLogin()) { throw new Exception("云盘,用户未登录"); } M_User_Cloud cloudMod = new M_User_Cloud(); B_User_Cloud cloudBll = new B_User_Cloud(); uploadPath = HttpUtility.UrlDecode(cloudBll.H_GetFolderByFType(GetParam("type"), mu)) + GetParam("value"); cloudMod.FileName = file.FileName; cloudMod.SFileName = function.GetRandomString(12) + Path.GetExtension(file.FileName); cloudMod.VPath = (uploadPath + "/").Replace("//", "/"); cloudMod.UserID = mu.UserID; cloudMod.FileType = 1; //result = SafeSC.SaveFile(cloudMod.VPath, file, cloudMod.SFileName); //if (SafeSC.IsImage(cloudMod.SFileName)) //{ // string icourl = SiteConfig.SiteOption.UploadDir + "YunPan/" + mu.UserName + mu.UserID + "/ico" + value + "/"; // if (!Directory.Exists(function.VToP(icourl))) { SafeSC.CreateDir(icourl); } // ImgHelper imghelp = new ImgHelper(); // imghelp.CompressImg(file, 100, icourl + cloudMod.SFileName); //} cloudMod.FileSize = new FileInfo(function.VToP(cloudMod.VPath) + cloudMod.SFileName).Length.ToString(); cloudBll.Insert(cloudMod); #endregion } else { //string fname = CreateFName(file.FileName); //if (SafeC.IsImageFile(file.FileName) && file.Length > (5 * 1024 * 1024))//图片超过5M则压缩 //{ // result = uploadPath + function.GetRandomString(6) + fname; // new ImgHelper().CompressImg(file, 5 * 1024, result); //} //else //{ result = SafeC.SaveFile(uploadPath, filename, file.OpenReadStream(), (int)file.Length); //} //添加水印 //if (WaterModuleConfig.WaterConfig.EnableUserWater) //{ // //未以管理员身份登录,并有会员身份登录记录 // if (adminMod == null && !mu.IsNull) // { // Image img = WaterImages.DrawFont(ImgHelper.ReadImgToMS(result), mu.UserName + " " + DateTime.Now.ToString("yyyy/MM/dd"), 9); // ImgHelper.SaveImage(result, img); // } //} //else if (DataConverter.CStr(context.Request["IsWater"]).Equals("1")) //{ // //前台主动标识需要使用水印 // result = ImgHelper.AddWater(result); //} } ZLLog.L(ZLEnum.Log.fileup, new M_Log() { UName = mu.UserName, Source = Request.RawUrl(), Message = "上传成功|文件名:" + file.FileName + "|" + "保存路径:" + uploadPath }); } catch (Exception ex) { ZLLog.L(ZLEnum.Log.fileup, new M_Log() { UName = mu.UserName, Source = Request.RawUrl(), Message = "上传失败|文件名:" + file.FileName + "|" + "原因:" + ex.Message }); } return(Content(result)); }
//Html必须编码后再传输,html默认的是将其UrlEncode后传递,服务端再编辑,直接传是不能的 //public M_Http_Result UploadParam(string url, Dictionary<string, object> postParameters) //{ // HttpMultipartFormRequest req = new HttpMultipartFormRequest(); // //req.config = config; // M_Http_Result result = new M_Http_Result(); // result = req.AsyncHttpRequest(url, postParameters, null); // return result; //} #endregion #region 文件下载 /// <summary> /// 从指定服务器上下载文件,支持断点续传 /// </summary> /// <param name="url">目标Url</param> /// <param name="vpath">本地虚拟路径</param> /// <param name="begin">开始位置,默认为0</param> public static void DownFile(string url, string vpath, int begin = 0) { //尝试除以0,原因:下载的文字过小,占用字节为0 vpath = SafeSC.PathDeal(vpath); if (SafeSC.FileNameCheck(vpath)) { throw new Exception("不支持下载[" + Path.GetFileName(vpath) + "]文件"); } string ppath = function.VToP(vpath); //long percent = 0; long sPosstion = 0;//磁盘现盘文件的长度 //long count = 0;// count += sPosstion,从指定位置开始写入字节 FileStream FStream; if (File.Exists(ppath)) { FStream = File.OpenWrite(ppath); //打开继续写入,并从尾部开始,用于断点续传(如果不需要,则应该删除其) sPosstion = FStream.Length; FStream.Seek(sPosstion, SeekOrigin.Current); //移动文件流中的当前指针 } else { string dir = Path.GetDirectoryName(ppath); if (!Directory.Exists(dir)) { Directory.CreateDirectory(dir); } try { FStream = new FileStream(ppath, FileMode.Create); } catch (Exception ex) { throw new Exception(ex.Message + "||" + ppath); } sPosstion = 0; } //打开网络连接 Stream myStream = null; try { HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(url); //if (CompletedLength > 0) // myRequest.AddRange((int)CompletedLength);//设置Range值,即头,从指定位置开始接收文件.. //向服务器请求,获得服务器的回应数据流 HttpWebResponse webResponse = (HttpWebResponse)myRequest.GetResponse(); //long FileLength = webResponse.ContentLength;//文件大小 //percent = FileLength / 100; myStream = webResponse.GetResponseStream(); byte[] btContent = new byte[1024]; //开始写入 int count = 0; while ((count = myStream.Read(btContent, 0, 1024)) > 0) //返回读了多少字节,为0表示全部读完 { FStream.Write(btContent, 0, count); //知道有多少个数字节后再写入 } } catch (Exception ex) { if (!ex.Message.Contains("基础连接已经关闭")) { throw new Exception("DownFile:" + ex.Message + "|" + url); } } finally { if (myStream != null) { myStream.Close(); } if (FStream != null) { FStream.Close(); } } }