public static string UploadFile(string fieldName)
{
if (HttpContext.Current.Request.Method != "POST")
{
return(null);
}
var fileField = new FileField(fieldName);
var files = HttpContext.Current.Request.Form.Files.GetFiles(fileField.Name);
if (files.Count == 0)
{
throw new InvalidException("请选择文件！");
}
var fileName = files[0].FileName;
if (IsImage(fileName))
{
fileField.Type = FieldType.Image;
}
else if (IsVideo(fileName))
{
fileField.Type = FieldType.Video;
}
else if (IsAudio(fileName))
{
fileField.Type = FieldType.Audio;
}
else if (IsDoc(fileName))
{
fileField.Type = FieldType.DocFile;
}
else if (IsZip(fileName))
{
fileField.Type = FieldType.ZipFile;
}
var list = new List <string>();
foreach (var file in files)
{
list.Add(UploadFile(fileField, file));
}
return(string.Join(",", list));
}
/// <summary>
/// 自动创建目录并还回文件名
/// </summary>
/// <param name="fileField"></param>
/// <param name="sourceFileName"></param>
/// <returns></returns>
public static string GetFileName(FileField fileField, string sourceFileName)
{
string savePath = fileField.SavePath;
if (string.IsNullOrEmpty(savePath))
{
switch (fileField.Type)
{
case FieldType.File:
savePath = "/upFiles/files";
break;
case FieldType.Image:
savePath = "/upFiles/photo";
break;
case FieldType.Video:
savePath = "/upFiles/video";
break;
case FieldType.DocFile:
savePath = "/upFiles/doc";
break;
}
savePath += "/" + DateTime.Now.ToString("yyyyMMdd");
}
if (!savePath.EndsWith("/") && !Path.HasExtension(savePath))
{
savePath += "/";
}
var folder = System.IO.Path.GetDirectoryName(MapPath(savePath));
CreateDirectory(folder);
string fileName;
var ext = Path.GetExtension(sourceFileName);
if (savePath.Contains("."))
{
if (ext == ".webp")
{
fileName = savePath.Replace(Path.GetExtension(savePath), ext);
}
else
{
fileName = savePath;
}
}
else
{
if (ext == ".webp")
{
ext = ".jpg";
}
fileName = string.Format("{0}{1}{2}", savePath, Path.GetRandomFileName(), ext);
}
if (!fileName.StartsWith("/upFiles"))
{
throw new InvalidException("无效目录！");
}
return(fileName);
}
public static string UploadFile(FileField fileField, Microsoft.AspNetCore.Http.IFormFile formFile = null, string lang = "CN")
{
if (HttpContext.Current.Request.Method != "POST")
{
return(null);
}
if (formFile == null)
{
if (HttpContext.Current.Request.Form.Files.Count == 0)
{
return(null);
}
if (!string.IsNullOrEmpty(fileField.Name))
{
formFile = HttpContext.Current.Request.Form.Files[fileField.Name];
}
else
{
formFile = HttpContext.Current.Request.Form.Files[0];
}
}
if (formFile.Length == 0)
{
return(null);
}
if (fileField.MaxLength > 0 && formFile.Length > (fileField.MaxLength * 1024))
{
throw new InvalidException(lang == "CN" ? $"{fileField.Text}({formFile.FileName})大小不能超过{GetSize(fileField.MaxLength * 1024)}！"
: $"{fileField.Text} ({formFile.FileName}) limit in {GetSize(fileField.MaxLength * 1024)}!");
}
#region 检查文件名是否正常
if (Path.GetInvalidFileNameChars().Any(a => formFile.FileName.Contains(a.ToString())))
{
throw new InvalidException(lang == "CN" ? $"无效的文件！" : "Invalid file!");
}
#endregion
#region 检查文件扩展名
switch (fileField.Type)
{
case FieldType.File:
if (!IsSecurityFile(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】不被允许的文件！" : $"Attachments ({fileField.Text}) extensions that are not allowed!");
}
break;
case FieldType.DocFile:
if (!IsDoc(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】必需为文档格式！" : $"Attachments \"{fileField.Text}\" must be in docment format!");
}
break;
case FieldType.Image:
if (!IsImage(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】必需为图片格式！" : $"Attachments \"{fileField.Text}\" must be in image format!");
}
break;
case FieldType.Video:
if (!IsVideo(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】必需为视频格式！" : $"Attachments \"{fileField.Text}\" must be in video format!");
}
break;
case FieldType.Audio:
if (!IsVideo(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】必需为音频格式！" : $"Attachments \"{fileField.Text}\" must be in audio format!");
}
break;
case FieldType.ZipFile:
if (!IsVideo(formFile.FileName))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】必需为压缩文件！" : $"Attachments \"{fileField.Text}\" must be in zip format!");
}
break;
}
if (fileField.AllowExtensions != null && fileField.AllowExtensions.Length > 0)
{
var ext = Path.GetExtension(formFile.FileName).ToLower();
if (!fileField.AllowExtensions.Contains(ext))
{
throw new InvalidException(lang == "CN" ? $"附件【{fileField.Text}】的扩展名必需为：{string.Join("、", fileField.AllowExtensions)}格式！"
: $"The extension of the attachment \"{fileField.Text}\" must be: {string.Join("、", fileField.AllowExtensions)} format!");
}
}
#endregion
var fileName = GetFileName(fileField, formFile.FileName);
var savePath = fileName.Substring(0, fileName.LastIndexOf("/"));
var filePath = MapPath(fileName);
formFile.SaveAs(filePath);
var imageField = fileField as ImageField;
#region 图片处理
if (imageField != null)
{
#region 生成缩略图
if (!imageField.ThumbSize.IsEmpty)
{
string path;
try
{
if (!string.IsNullOrEmpty(imageField.ThumbPath))
{
path = fileField.Data.ThumbPath;
}
else
{
path = savePath + "/thumb";
}
}
catch
{
path = savePath + "/thumb";
}
var saveFolder = MapPath(path);
CreateDirectory(saveFolder);
var thumbPath = Path.Combine(saveFolder, Path.GetFileName(filePath));
CompressImage(filePath, imageField.ThumbSize, imageField.CompressQuality, thumbPath);
}
#endregion
#region 压缩图片
if (imageField.Compress)
{
var fName = Path.GetFileNameWithoutExtension(filePath);
string compressSavePath;
if (imageField.KeepSourceFile)
{
compressSavePath = filePath.Replace(fName, $"{fName}-compress");
fileName = fileName.Replace(fName, $"{fName}-compress");
}
else
{
compressSavePath = filePath;
}
CompressImage(filePath, imageField.CompressSize, 80, compressSavePath);
}
#endregion
}
#endregion
return(fileName);
}
