通过使用Server.Mappath（）和FileUpload.SaveAs（文件上传） [英] File Uploading using Server.MapPath() and FileUpload.SaveAs()
问题描述
我有一个网站管理员节这我忙工作，具有特定用途4的FileUpload控件。我需要知道的是，当我使用使用Server.Mappath（）方法中FileUpload控件的另存为（）方法，将它仍然是在Web服务器上可用的我已经上传网站后？据我所知，另存为（）需要一个绝对路径，这就是为什么我用地图的路径使用Server.Mappath（）
如果（fuLogo.HasFile）//我FileUpload控件：检查文件是否已经被分配给控制
{
INT计数器= 0; //这个计数器用于确保没有文件将被覆盖。
字符串[] = fileBreak fuLogo.FileName.Split（新的char [] {''}）;
LOGO =使用Server.Mappath（../图像/徽标/+ fileBreak [0] + counter.ToString（）+ + fileBreak [1]。）; //这是我想知道有关的部分。这是否会仍然起作用，应该在Web服务器上上传后的方法是什么？
如果（fileBreak [1] .ToUpper（）==GIF|| fileBreak [1] .ToUpper（）==PNG）
{
而（System.IO.File.Exists（标识））
{
反++; //这里计数器付诸行动
LOGO =使用Server.Mappath（../图像/徽标/+ fileBreak [0] + counter.ToString（）+ + fileBreak [1]。）;
}
}
其他
{
cvValidation.ErrorMessage =该网站不支持超过png格式或.gif任何其他图像格式，请保存这些文件格式之一的图片，然后再试一次。
cvValidation.IsValid = FALSE;
}
如果（fuLogo.PostedFile.ContentLength＆GT; 409600）//文件必须是400KB或更小
{
cvValidation.ErrorMessage =请使用图片的尺寸小于400 KB
cvValidation.IsValid = FALSE; }
其他
{ 如果（fuLogo.HasFile＆安培;＆安培; cvValidation.IsValid）
{
fuLogo.SaveAs（标识）; //保存标识文件是否存在，并验证没有失败。徽标的路径是由使用Server.Mappath（）方法创建。
} }
}
其他
{
标志=N / A;
}
-
如果您要保存在文件
您的Web服务器上的目录，然后
在使用Server.Mappath（）将是合适的
解决方案。字符串dirPath = System.Web.HttpContext.Current.Server.MapPath（〜）+/图像/徽标/+ fileBreak [0] + counter.ToString（）+。 + fileBreak [1]; -
如果您要保存文件出来
然后Web服务器使用一个完整路径，如C：\\上传
并确保网络进程
写权限到该文件夹，我建议你保存路径本身，在这种情况下，web.config文件。
I have a website admin section which I'm busy working on, which has 4 FileUpload controls for specific purposes. I need to know that , when I use the Server.MapPath() Method Within the FileUpload control's SaveAs() methods, Will it still be usable on the web server after I have uploaded the website? As far as I know, SaveAs() requires an absolute path, that's why I map a path with Server.MapPath()
if (fuLogo.HasFile) //My FileUpload Control : Checking if a file has been allocated to the control
{
int counter = 0; //This counter Is used to ensure that no files are overwritten.
string[] fileBreak = fuLogo.FileName.Split(new char[] { '.' });
logo = Server.MapPath("../Images/Logos/" + fileBreak[0] + counter.ToString()+ "." + fileBreak[1]); // This is the part Im wondering about. Will this still function the way it should on the webserver after upload?
if (fileBreak[1].ToUpper() == "GIF" || fileBreak[1].ToUpper() == "PNG")
{
while (System.IO.File.Exists(logo))
{
counter++; //Here the counter is put into action
logo = Server.MapPath("../Images/Logos/" + fileBreak[0] + counter.ToString() + "." + fileBreak[1]);
}
}
else
{
cvValidation.ErrorMessage = "This site does not support any other image format than .Png or .Gif . Please save your image in one of these file formats then try again.";
cvValidation.IsValid = false;
}
if (fuLogo.PostedFile.ContentLength > 409600 ) //File must be 400kb or smaller
{
cvValidation.ErrorMessage = "Please use a picture with a size less than 400 kb";
cvValidation.IsValid = false;
}
else
{
if (fuLogo.HasFile && cvValidation.IsValid)
{
fuLogo.SaveAs(logo); //Save the logo if file exists and Validation didn't fail. The path for the logo was created by the Server.MapPath() method.
}
}
}
else
{
logo = "N/A";
}
If you intend to save the files in a directory on your web server , then the
Server.MapPath()will be the suitable solution.string dirPath = System.Web.HttpContext.Current.Server.MapPath("~") + "/Images/Logos/"+ fileBreak[0] + counter.ToString() + "." + fileBreak[1];Look Here
if you intend to save your files out the web server then
Use a full path, like "c:\uploads" and be sure that the web process has permission to write to that folder,I suggest you store the path itself in the web.config file in this case.
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