/// <summary>
/// 生成缩略图
/// </summary>
/// <param name="imagefilePath">图片路径</param>
/// <param name="timming">生成方式</param>
public static void HandleThumbnail(string imagefilePath, ThumbnailTimming timming)
{
FileProperties _fileInfo = FileHelper.GetFileInfo(imagefilePath, @"^(.*)\\upload\\(.+)\\(day_\d+)\\(\d+)(\.[A-Za-z]+)$");
if (_fileInfo == null)
{
return;
}
string _root = _fileInfo.Root,
_folder = _fileInfo.Folder,
_subFolder = _fileInfo.SubFolder,
_fileName = _fileInfo.FileName,
_fileExt = _fileInfo.FileNameExt;
foreach (var pair in UploadConfigContext.ThumbnailConfigDic
.Where(t => t.Key.StartsWith(_fileInfo.Folder.ToLower() + "_", StringComparison.OrdinalIgnoreCase) && t.Value.Timming == timming))
{
ThumbnailSize _size = pair.Value;
string _thumbnailFileFolder = string.Format("{0}\\upload\\{1}\\{2}\\thumb",
_root, _folder, _subFolder);
if (!Directory.Exists(_thumbnailFileFolder))
{
Directory.CreateDirectory(_thumbnailFileFolder);
}
string _thumbnailFilePath = string.Format("{0}\\upload\\{1}\\{2}\\thumb\\{3}_{4}_{5}{6}",
_root, _folder, _subFolder, _fileName, _size.Width, _size.Height, _fileExt);
ThumbnailHelper.BuilderThumbnail(imagefilePath, _thumbnailFilePath, _size);
}
}
/// <summary>
/// 延迟生成图片缩略图
/// </summary>
public static void HandlerLazyThumbnail()
{
foreach (var group in UploadConfigContext.UploadConfig.UploadFolders)
{
string _folder = Path.Combine(UploadConfigContext.UploadPath, group.Path);
if (!Directory.Exists(_folder))
{
continue;
}
foreach (string dayFolder in Directory.GetDirectories(_folder))
{
foreach (string filePath in Directory.GetFiles(dayFolder))
{
FileProperties _fileInfo = FileHelper.GetFileInfo(filePath, @"^(.+\\day_\d+)\\(\d+)(\.[A-Za-z]+)$");
if (_fileInfo == null)
{
continue;
}
string _root = _fileInfo.Root,
_fileName = _fileInfo.FileName,
_fileExt = _fileInfo.FileNameExt,
_thumbnailFileFolder = Path.Combine(dayFolder, "Thumb");
if (!Directory.Exists(_thumbnailFileFolder))
{
Directory.CreateDirectory(_thumbnailFileFolder);
}
foreach (var size in group.ThumbnailSizes)
{
if (size.Timming != ThumbnailTimming.Lazy)
{
continue;
}
string _thumbnailFilePath = string.Format("{0}\\thumb\\{1}_{2}_{3}{4}",
_root, _fileName, size.Width, size.Height, _fileExt);
if (File.Exists(_thumbnailFilePath) && size.IsReplace)
{
File.Delete(_thumbnailFilePath);
}
if (!File.Exists(_thumbnailFilePath))
{
ThumbnailHelper.BuilderThumbnail(filePath, _thumbnailFilePath, size);
}
}
}
}
}
}
/// <summary>
/// 按需生成缩略图
/// </summary>
private void OnDemandCreateThumbnailImage(string filePath, string thumbnailFilePath, string folder, string subFolder, string thumbnailKey)
{
//若缩略图不存在，则生成
if (!File.Exists(thumbnailFilePath))
{
string _thumbnailFileFolder = string.Format(@"{0}\{1}\Thumb", folder, subFolder);
_thumbnailFileFolder = Path.Combine(UploadConfigContext.UploadPath, _thumbnailFileFolder);
if (!Directory.Exists(_thumbnailFileFolder))
{
Directory.CreateDirectory(_thumbnailFileFolder);
}
ThumbnailHelper.BuilderThumbnail(filePath, thumbnailFilePath, UploadConfigContext.ThumbnailConfigDic[thumbnailKey]);
}
}