//为什么这个代码没有功能，如果我上传1.chicken.jpg 180kb 2.chicken.pdf但是chicken.pdf跟随插入到数据库
HttpFileCollection hfc = Request.Files;
if (hfc != null)
{
string cekDir = string.Format("{0}\\{1}", ConfigurationManager.AppSettings["docLoc"], id_hazard_report);
string PicDir;
if (Directory.Exists(cekDir)) //check Folder avlalible or not
{
PicDir = cekDir;
}
else
{
DirectoryInfo di = Directory.CreateDirectory(cekDir); // create Folder
PicDir = cekDir;
}
string fullname;
string filename;
FileUpload FileUpload1 = (FileUpload)FormView1.FindControl("FileUpload1");
string fileExt = Path.GetExtension(FileUpload1.FileName); //Get The File Extension
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
if (hpf.ContentLength >0)
{
///full path name to check exist or not
fullname = string.Format("{0}\\{1}", PicDir, Path.GetFileName(hpf.FileName.Replace(" ", "_")));
bool ex = File.Exists(fullname);
if (hpf == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
{
if(FileUpload1.FileBytes.Length > 200000)
{
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Tidak boleh lebih dari 200 kb');</script>");
break;
}
if (ex == true)
{
string f = Path.GetFileName(hpf.FileName.Replace(" ", "_"));
string[] a = new string[1];
a = f.Split('.');
filename = string.Format("{0}_{1}.{2}", a.GetValue(0), DateTime.Now.ToString("yymdHm"), a.GetValue(1));
}
else
{
filename = Path.GetFileName(hpf.FileName.Replace(" ", "_")).ToString();
}
///full path name to store in database with new filename
//string[] aa = new string[1];
//filename = string.Format("{0}_{1}.{2}", aa.GetValue(0), DateTime.Now.ToString("yymdHm"), aa.GetValue(1));
fullname = string.Format("{0}\\{1}", PicDir, filename);
hpf.SaveAs(fullname); //save as
InsertHazardDoc(id_hazard_report, filename);
}
else
{
FileUpload1.Focus();
ClientScript.RegisterStartupScript(Type.GetType("System.String"),"messagebox", "<script type=\"text/javascript\">alert('File Bukan Format Gambar');</script>");
break;
}
}
//}
}
}
#endregion
//Page.DataBind();
myfb._success("Hazard Report Succesfully Inserted");
}
catch (Exception ex)
{
myfb._error(ex.ToString());
}
}
//为什么这个代码没有功能，如果我上传1.chicken.jpg 180kb 2.chicken.pdf但是chicken.pdf跟随插入到数据库
答案 0 :(得分：0)
在此定义：
HttpPostedFile hpf = hfc[i];
然后你问：
if (hpf == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
但是hpf是HttpPostedFile而不是string
将您的代码更改为：
if (fileExt == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
此外，您有一个所有上传文件的循环。
在该循环开始之前，您将获得文件扩展名，然后执行循环：
for (int i = 0; i < hfc.Count; i++)
您需要检查循环内的文件扩展名：
for (int i = 0; i < hfc.Count; i++)
string fileExt = Path.GetExtension(hpf.FileName); //Get The File
否则，如果您的第一个文件具有允许的文件扩展名，则将保存上载中的所有文件。
如果文件名中包含.，例如.，则基于FileName.Something.jgp拆分文件名的方法会导致问题。而是使用Path.GetFileNameWithoutExtension
如果在同一秒内上传多个具有相同名称的文件，则为文件指定唯一名称的时间戳也会导致问题。我一直都会看到这个问题。您可能希望包含毫秒。
如果您想跳过无效文件，请使用continue代替break：
HttpFileCollection hfc = Request.Files;
if (hfc != null)
{
string cekDir = string.Format("{0}\\{1}", ConfigurationManager.AppSettings["docLoc"], id_hazard_report);
string PicDir;
if (Directory.Exists(cekDir)) //check Folder avlalible or not
{
PicDir = cekDir;
}
else
{
DirectoryInfo di = Directory.CreateDirectory(cekDir); // create Folder
PicDir = cekDir;
}
string fullname;
string filename;
//FileUpload FileUpload1 = (FileUpload)FormView1.FindControl("FileUpload1");
for (int i = 0; i < hfc.Count; i++)
{
HttpPostedFile hpf = hfc[i];
if (hpf.ContentLength > 0)
{
///full path name to check exist or not
fullname = string.Format("{0}\\{1}", PicDir, Path.GetFileName(hpf.FileName.Replace(" ", "_")));
// get the file name here.
string fileExt = Path.GetExtension(FileUpload1.FileName); //Get The File Extension
if (FileExt == (".jpg") || fileExt == (".gif") || fileExt == (".bmp") || fileExt == (".png") || fileExt == (".jpeg"))
{
if (hpf.ContentLength.Length > 200000)
{
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Tidak boleh lebih dari 200 kb');</script>");
continue; // break will exit the loop, use continue to go to the next file
}
if (File.Exists(fullname))
{
string f = Path.GetFileNameWithoutExtension(hpf.FileName.Replace(" ", "_"));
string timeStamp = DateTime.Now.ToString("yymdHm"); // this could fail, be more specific with your timestamp;
filename = f + timeStamp + fileExt;
// this will not work correctly if more than one "." in the file name
//string[] a = new string[1];
//a = f.Split('.');
//filename = string.Format("{0}_{1}.{2}", a.GetValue(0), DateTime.Now.ToString("yymdHm"), a.GetValue(1));
}
else
{
filename = Path.GetFileName(hpf.FileName.Replace(" ", "_")).ToString();
}
///full path name to store in database with new filename
//string[] aa = new string[1];
//filename = string.Format("{0}_{1}.{2}", aa.GetValue(0), DateTime.Now.ToString("yymdHm"), aa.GetValue(1));
fullname = string.Format("{0}\\{1}", PicDir, filename);
hpf.SaveAs(fullname); //save as
InsertHazardDoc(id_hazard_report, filename);
}
else
{
FileUpload1.Focus();
ClientScript.RegisterStartupScript(Type.GetType("System.String"), "messagebox", "<script type=\"text/javascript\">alert('File Bukan Format Gambar');</script>");
continue;// break will exit the loop, use continue to go to the next file
}
}
//}
}
}