/// <summary>
/// 初始化
/// </summary>
public UploadHelper()
{
HttpRequest request = _Context.Request;
if (request.Files.Count <= 0)
{
throw new HttpException(500, "服务器没有获取到上传的文件");
}
_PostedFile = request.Files[0];
_fileInfo = new UploadFileInfo(_PostedFile);
}
/// <summary>
/// 移动临时文件夹文件，到上传文件的子文件夹
/// </summary>
/// <param name="filename">文件名</param>
/// <param name="subFolder">要移动的子文件夹</param>
/// <returns>返回格式"subFolder/filename"</returns>
public static string Move(string filename, string subFolder, UploadSuccess onSuccess = null)
{
UploadFileInfo _fileInfo = new UploadFileInfo();
//1.判断文件是否在临时文件夹存在
if (_fileInfo.ExitsFromTempFile(filename) == false)
{
throw new Exception("获取临时文件夹中的文件失败，您可以尝试重新上传");
}
//2.从临时文件夹中移动到上传文件夹的子文件夹
string newFullName = _fileInfo.GetUploadFiles_Sub(subFolder) + "\\" + filename;
if (File.Exists(newFullName))
{
File.Delete(newFullName);
}
//3.移动文件
File.Move(_fileInfo.TempFile + filename, newFullName);
//4.移动成功，委托处理
if (onSuccess != null)
{
onSuccess();
}
//返回路径需要反斜杠
return subFolder + "/" + filename;
}