/// <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();
}
}
}