请教一个文件上传的问题！
我想根据客户端提交的地址上传文件请问该怎么做？比如客户端有个地址是："F:\1.txt"这个文件，我点上传后根据这个地址读取客户端1.txt这个文件然后上传到我服务端指定文件夹里面！请问该如何写？谢谢！！！
[解决办法]
- C# code
/// <summary> /// 上传单个文件 /// </summary> /// <param name="File1">文件控件</param> /// <param name="sizes">上传大小限制,KB单位；为小于等于0不限</param> /// <param name="filetype">文件后缀限定，以“|”隔开，不带"."号。为空不限</param> /// <param name="filepath">上传到文件夹路径，为空为当前文件夹</param> /// <param name="returnmessage">上传返回信息</param> /// <returns>返回上传的文件名虚拟路径</returns> public static string UploadFile(System.Web.UI.HtmlControls.HtmlInputFile File1, int sizes, string filetype, string filepath,ref string returnmessage) { returnmessage = ""; try { filepath = filepath.Trim(); if (filepath.LastIndexOf("/") != filepath.Length - 1) { filepath += "/"; } string path = filepath; //保存至的文件夹 if (path == "") { path = "./"; } path = System.Web.HttpContext.Current.Server.MapPath(path); //判断是否有上传的文件 string sourcepath = File1.Value.Trim();//文件的上传的路径 if (sourcepath == "" || sourcepath == null) { returnmessage = "无上传文件"; return ""; } string tfiletype = sourcepath.Substring(sourcepath.LastIndexOf(".") + 1).ToLower(); //如果要求的后缀不为空则判断上传的文件的后缀是否合适 if (filetype != "") { if ((filetype.ToLower() + "|").IndexOf(tfiletype + "|") < 0) { returnmessage = "上传的文件类型不符合设定"; return ""; } } if (sizes > 0) { int sizes2 = sizes * 1024; //获得上传文件的大小 long strLen = File1.PostedFile.ContentLength; //判断上传文件大小 if (strLen > sizes2) { returnmessage = "上传的文件不能大于" + sizes.ToString() + "KB"; return ""; } } System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(path); //判断文件夹否存在,不存在则创建 if (!dir.Exists) { dir.Create(); } string modifyfilename = Tools.GetId(0,12); path = path + modifyfilename + "." + tfiletype; while (System.IO.File.Exists(path)) { modifyfilename = Tools.GetId(0, 12); path = path + modifyfilename + "." + tfiletype; } File1.PostedFile.SaveAs(path); filepath = filepath + modifyfilename + "." + tfiletype; returnmessage = "上传成功"; return filepath; } catch { returnmessage = "上传出现错误"; return ""; } }
[解决办法]
string fileType = this.upSheetFile.PostedFile.ContentType;
if (fileType != "text/xml")
{
this.lblErr.Text = "上传文件类型不正确！";
return;
}
if (this.upSheetFile.PostedFile.ContentLength == 0)
{
this.lblErr.Text = "请选择要上传的试卷";
}
else
{
string sheetName = upSheetFile.PostedFile.FileName;
XmlDocument xd = new XmlDocument();
try
{
xd.Load(upSheetFile.PostedFile.InputStream);
string title = xd.SelectSingleNode("//title").InnerText;
string score = xd.SelectSingleNode("//score").InnerText;
string timing = xd.SelectSingleNode("//timing").InnerText;
string tmcount = xd.SelectSingleNode("//tmcount").InnerText;
string content = xd.SelectSingleNode("//content").InnerText.Replace("\t", "").Replace("\r", "").Replace("\n", "");//.Replace(" ","カ")
content = createimg(content);
if (content == "")
{
this.lblErr.Text = "试卷上传失败,操作无写入权限！";
return;
}
string jsonTiMuScore = xd.SelectSingleNode("//JsonTiMuScore").InnerText;
string jsonAnswer = xd.SelectSingleNode("//JsonAnswer").InnerText;
string GUID = xd.SelectSingleNode("//GUID").InnerText;
string sheetID = new DBSheet().InsertSheetFile(title, score, timing, tmcount, content, jsonTiMuScore, jsonAnswer, TeacherID, GUID);
if (sheetID == "")
{
this.lblErr.Text = "试卷上传失败或试卷已存在！";
}
else
{
Public.CreateTestFile(sheetID, content, Request.PhysicalApplicationPath);
this.lblErr.Text = "试卷上传成功！" + sheetID;
Response.Redirect("SheetEdit.aspx", true);
//Response.Write("<script>window.location.reload()</script>");
//BindSheet();
}
}
catch (Exception ex)
{
this.lblErr.Text = "上传文件格式不正确！" + ex.Message;
}
试着改一下
[解决办法]
当然可以了。。
- C# code
using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class _uploadIT : System.Web.UI.Page{ //protected System.Web.UI.WebControls.Button UploadButton; // protected System.Web.UI.WebControls.Label strStatus; protected void Page_Load(object sender, EventArgs e) { if (Session["adminName"].ToString().Trim() != "") { if((Convert.ToInt32(Session["level"].ToString()) == 3 && Convert.ToInt32(Session["class"].ToString()) == 1)|| (Convert.ToInt32(Session["level"].ToString()) == 5)) //(Convert.ToInt32(Session["level"].ToString()) >= 4) { } else { Response.Redirect("error.html"); } } else { Response.Redirect("login.aspx"); } } private Boolean SaveImages() { HttpFileCollection files = HttpContext.Current.Request.Files; System.Text.StringBuilder strMsg = new System.Text.StringBuilder(); strMsg.Append("上传的文件分别是：<hr color=red>"); try { for (int iFile = 0; iFile < files.Count; iFile++) { HttpPostedFile postedFile = files[iFile]; string fileName, fileExtension, file_id; int year = System.DateTime.Now.Year; int month = System.DateTime.Now.Month; int day = System.DateTime.Now.Day; int hour = System.DateTime.Now.Hour; int minute = System.DateTime.Now.Minute; int second = System.DateTime.Now.Second; int millisecond = System.DateTime.Now.Millisecond; //string my_file_id = year.ToString() + month.ToString() + day.ToString() + hour.ToString() + minute.ToString() + second.ToString() + millisecond.ToString() + iFile.ToString(); fileName = System.IO.Path.GetFileName(postedFile.FileName); fileExtension = System.IO.Path.GetExtension(fileName); file_id = fileName; if (fileName != "") { fileExtension = System.IO.Path.GetExtension(fileName); strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>"); strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>"); strMsg.Append("上传文件的文件名：" + file_id + "<br>"); strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>"); postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("upload/") + file_id); } } strStatus.Text = strMsg.ToString(); return true; } catch (System.Exception Ex) { strStatus.Text = Ex.Message; return false; } } protected void UploadButton_Click(object sender, EventArgs e) { Boolean bl = SaveImages(); if (bl) { adminDataBase db = new adminDataBase(); int l = db.Log(Session["adminName"].ToString(), "上传文件"); Response.Write("<script>alert('上传成功！')</script>"); } else { Response.Write("<script>alert('上传失败！')</script>"); } }}
[解决办法]
- C# code
if ((FileUpload1.HasFile) == true) { ///'''上传文件'''''''''''''' string savepath = Server.MapPath("Data\\"); string filename = null; string filekjm = null; string ip = null; ip = Request.ServerVariables("REMOTE_ADDR"); ip = Strings.Replace(ip, ".", ""); filekjm = System.IO.Path.GetExtension(FileUpload1.FileName); if (filekjm != ".xls") { Response.Write("<script>alert('请导入Excel文件!!!')</script>"); return; } filename = DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Hour + DateTime.Now.Minute + DateTime.Now.Second + ip + filekjm; filename = Strings.Replace(filename, " ", ""); savepath += filename; FileUpload1.SaveAs(savepath); }
[解决办法]
#region 上传文件
/// <summary>
/// 上传文件
/// </summary>
/// <returns></returns>
private ArrayList SaveFiles()
{
///'遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files;
try
{
for (int iFile = 0; iFile < files.Count; iFile++)
{
///'检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName, fileExtension;
fileName = System.IO.Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
fileExtension = System.IO.Path.GetExtension(fileName);
fileName = DateTime.Now.ToString("yyyyMMddHHmmss") + iFile .ToString () + fileExtension ;
///'可根据扩展名字的不同保存到不同的文件夹
///注意：可能要修改你的文件夹的匿名写入权限。
postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("file/") + fileName);
}
}
}
catch
{
}
}
#endregion
这个地方是因为可能别人上传的文件重名，这样就把服务器上的文件覆盖掉了
我用当前时间，就可以避免文件丢失
不过就是服务器文件会一直增加
[解决办法]
我做了个上传整个文件夹的程序可以给你参考下
- C# code
/// <summary> /// 上传当前文件夹下面的所有文件 /// </summary> private void UploadCurrentFolder() { //获取文件夹的路径 int filenameLastindex = filename.LastIndexOf(@"\"); string dirinfo = filename.Substring(0, filenameLastindex); //文件夹的路径 DirectoryInfo dir = new DirectoryInfo(dirinfo); //获取文件夹的名称 int dirinfoLastindex = dirinfo.LastIndexOf(@"\"); string dirname = dirinfo.Substring(0, dirinfoLastindex); dirname = dirinfo.Replace(dirname, ""); //文件夹名称 //上传到服务器的路径 string path = Server.MapPath(@"~/upload/" + dirname + "/"); //将文件夹里的所有数据传输到服务器上 string newFilename; string astractFileType = ".jpg.gif.exe"; foreach (FileInfo files in dir.GetFiles()) { //获取上传文件的类型 string FileExtension = files.Extension; //需要限制上传文件的类型 if (astractFileType.IndexOf(FileExtension) >= 0) { Response.Redirect("Upload.aspx?stateinfo=提示：文件夹中含有JPG,GIF,EXE类型格式的文件！不是允许的格式。部分文件没有被上传"); } else if (files.Length > 1024000 * 150) { Response.Redirect("Upload.aspx?stateinfo=提示：上传的文件超过允许的上限！最大上传文件限制150M！"); } else { //如果服务器上该文件夹不存在的话,创建文件夹 if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } //如果文件存在就改变文件名 if (File.Exists(path + files.Name)) { //加上日期，精确到毫秒 newFilename = DateTime.Now.ToString("yyyyMMddHHmmssff") + files.Name; } //如果文件名超长 else if (files.Name.Length > 50) { newFilename = DateTime.Now.ToString("yyyyMMddHHmmssff") + files.Name.Substring(0, 47) + "……" + files.Extension; } else { newFilename = files.Name; } files.CopyTo(path + newFilename); Response.Redirect("Upload.aspx?stateinfo=上传成功!"); } }