ASP. NET example of uploading files to a shared folder
- 2021-11-29 06:44:13
- OfStack
Directory upload file code
web. config tool method constant specific upload file code
Upload file code
Creating Shared Folder Resources
Upload file code
web. config
<!-- Upload file configuration ,UploadPath Value 1 It must be the server ip Intranet ip Best -->
<add key="UploadPath" value="\\172.21.0.10\File" />
<add key="DownloadPath" value="http://x.x.x.x:80/" />
<add key="UserName" value="ShareUser" />
<add key="Password" value="P@ssw0rd" />
Tool method
public static string GetConfigString(string key, string @default = "")
{
return ConfigurationManager.AppSettings[key] ?? @default;
}
/// <summary>
/// Get the folder name to save according to the file name (including file extension)
/// </summary>
public class FileHelper
{
/// <summary>
/// Get the folder name to save according to the file name (including file extension)
/// </summary>
/// <param name="fileName"> File name (including file extension) </param>
public static string GetSaveFolder(string fileName)
{
var fs = fileName.Split('.');
var ext = fs[fs.Length - 1];
var str = string.Empty;
var t = ext.ToLower();
switch (t)
{
case "jpg":
case "jpeg":
case "png":
case "gif":
str = "images";
break;
case "mp4":
case "mkv":
case "rmvb":
str = "video";
break;
case "apk":
case "wgt":
str = "app";
break;
case "ppt":
case "pptx":
case "doc":
case "docx":
case "xls":
case "xlsx":
case "pdf":
str = "file";
break;
default:
str = "file";
break;
}
return str;
}
}
/// <summary>
/// Logging helper class
/// </summary>
public class WriteHelper
{
public static void WriteFile(object data)
{
try
{
string path = $@"C:\Log\";
var filename = $"Log.txt";
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
TextWriter tw = new StreamWriter(Path.Combine(path, filename), true); //true Add data at the end of the file
tw.WriteLine($"---- Generation time: {DateTime.Now:yyyy-MM-dd HH:mm:ss}---------------------------------------------------------------------");
tw.WriteLine(data.ToJson());
tw.Close();
}
catch (Exception e)
{
}
}
}
Constant
/// <summary>
/// File upload configuration item
/// </summary>
public class FileUploadConst
{
/// <summary>
/// Upload address
/// </summary>
public static string UploadPath => ConfigHelper.GetConfigString("UploadPath");
/// <summary>
/// File access / Download address
/// </summary>
public static string DownloadPath => ConfigHelper.GetConfigString("DownloadPath");
/// <summary>
/// Access shared directory user name
/// </summary>
public static string UserName => ConfigHelper.GetConfigString("UserName");
/// <summary>
/// Access shared directory password
/// </summary>
public static string Password => ConfigHelper.GetConfigString("Password");
}
Specific upload file code
/// <summary>
/// Upload files to shared folders
/// </summary>
[HttpPost, Route("api/Upload/UploadAttachment")]
[AllowAnonymous]
public ServiceResponse<UploadRespModel> UploadAttachment()
{
var viewModel = new UploadRespModel();
var code = 200;
var msg = " Upload failed !";
var path = FileUploadConst.UploadPath; //@"\\172.16.10.130\Resource";
var s = connectState(path, FileUploadConst.UserName, FileUploadConst.Password);
if (s)
{
var filelist = HttpContext.Current.Request.Files;
if (filelist.Count > 0)
{
var file = filelist[0];
var fileName = file.FileName;
var blobName = FileHelper.GetSaveFolder(fileName);
path = $@"{path}\{blobName}\";
fileName = $"{DateTime.Now:yyyyMMddHHmmss}{fileName}";
// Directory of shared folders
var theFolder = new DirectoryInfo(path);
var remotePath = theFolder.ToString();
Transport(file.InputStream, remotePath, fileName);
viewModel.SaveUrl = $"{blobName}/{fileName}";
viewModel.DownloadUrl = PictureHelper.GetFileFullPath(viewModel.SaveUrl);
msg = " Upload succeeded ";
}
}
else
{
code = CommonConst.Code_OprateError;
msg = " Linked Server Failure ";
}
return ServiceResponse<UploadRespModel>.SuccessResponse(msg, viewModel, code);
}
/// <summary>
/// Connect to a remote shared folder
/// </summary>
/// <param name="path"> The path to the remote shared folder </param>
/// <param name="userName"> User name </param>
/// <param name="passWord"> Password </param>
private static bool connectState(string path, string userName, string passWord)
{
bool Flag = false;
Process proc = new Process();
try
{
proc.StartInfo.FileName = "cmd.exe";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardInput = true;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.CreateNoWindow = true;
proc.Start();
string dosLine = "net use " + path + " " + passWord + " /user:" + userName;
WriteHelper.WriteFile($"dosLine:{dosLine}");
proc.StandardInput.WriteLine(dosLine);
proc.StandardInput.WriteLine("exit");
while (!proc.HasExited)
{
proc.WaitForExit(1000);
}
string errormsg = proc.StandardError.ReadToEnd();
proc.StandardError.Close();
WriteHelper.WriteFile($"errormsg:{errormsg}");
if (string.IsNullOrEmpty(errormsg))
{
Flag = true;
}
else
{
throw new Exception(errormsg);
}
}
catch (Exception ex)
{
WriteHelper.WriteFile(ex);
throw ex;
}
finally
{
proc.Close();
proc.Dispose();
}
return Flag;
}
/// <summary>
/// Save local content to a remote folder, or download files from a remote folder to the local
/// </summary>
/// <param name="inFileStream"> The path of the file to be saved. If the file is saved to a shared folder, this path is the local file path such as: @"D:\1.avi"</param>
/// <param name="dst"> Path to save the file, without name and extension </param>
/// <param name="fileName"> Save the name and extension of the file </param>
private static void Transport(Stream inFileStream, string dst, string fileName)
{
WriteHelper.WriteFile($" Directory -Transport : {dst}");
if (!Directory.Exists(dst))
{
Directory.CreateDirectory(dst);
}
dst = dst + fileName;
if (!File.Exists(dst))
{
WriteHelper.WriteFile($" File does not exist, start saving ");
var outFileStream = new FileStream(dst, FileMode.Create, FileAccess.Write);
var buf = new byte[inFileStream.Length];
int byteCount;
while ((byteCount = inFileStream.Read(buf, 0, buf.Length)) > 0)
{
outFileStream.Write(buf, 0, byteCount);
}
WriteHelper.WriteFile($" Save complete ");
inFileStream.Flush();
inFileStream.Close();
outFileStream.Flush();
outFileStream.Close();
}
}
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