internal static string BringUrl(string fileName, byte[] fileData)
{
string folderPath = FileExporterConfig.GetSetting().BaseFolder;
const string TmpFileFolder = "TempFiles";
if (folderPath == null || folderPath.Trim().Length <= 0)
{
folderPath = Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, TmpFileFolder);
}
else
{
string p = Path.GetPathRoot(folderPath);
if (p == null || p.Trim().Length <= 0) // 说明是相对路径
{
folderPath = Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, folderPath);
}
}
if (!Directory.Exists(folderPath))
{
Directory.CreateDirectory(folderPath);
}
else
{
CleanOldFiles(folderPath);
}
string filePath = Path.Combine(folderPath, fileName);
using (FileStream stream = new FileStream(filePath, FileMode.Create, FileAccess.Write))
{
stream.Write(fileData, 0, fileData.Length);
}
string vp = FileExporterConfig.GetSetting().VirtualPath;
if (vp == null || vp.Trim().Length <= 0)
{
vp = TmpFileFolder;
}
else
{
vp = vp.Trim().Trim('/', '\\');
}
return(vp + "/" + HttpUtility.UrlEncode(fileName));
}
private static void CleanOldFiles(string folderPath)
{
try
{
TimeSpan time = FileExporterConfig.GetSetting().GetExpiryTime();
DirectoryInfo directory = new DirectoryInfo(folderPath);
FileInfo[] files = directory.GetFiles();
foreach (FileInfo file in files)
{
if (file.LastWriteTime.Date.Add(time) < DateTime.Now)
{
file.Delete();
}
}
}
catch (Exception ex)
{
ExceptionHelper.HandleException(ex);
}
}
public static IFileExport CreateExporter(string exporterName)
{
ExporterSetting setting = FileExporterConfig.GetSetting();
if (setting != null && exporterName != null && exporterName.Trim().Length > 0)
{
if (setting.FileExporterList.ContainsKey(exporterName))
{
string typeName = setting.FileExporterList[exporterName];
if (typeName != null && typeName.Length > 0)
{
Type type = Type.GetType(typeName, true);
return((IFileExport)Activator.CreateInstance(type));
}
}
if (setting.Default != null && setting.Default.Length > 0 && setting.FileExporterList.ContainsKey(setting.Default))
{
CreateExporter(setting.Default);
}
}
return(new ExcelFileExporter());
}