public ImageParameter Fix(ImageParameter parameter)
{
parameter.Guid = Guid.Parse(parameter.Id);
parameter.Year = parameter.YearMonth / 100;
parameter.Month = parameter.YearMonth % 100;
if (parameter.Year < 2014 || parameter.Year > DateTime.Now.Year + 1 || parameter.Month < 1 || parameter.Month > 12)
{
throw new Exception("错误的年月格式");
}
parameter.ImageFormat = ("." + parameter.Format).GetImageFormat();
return(parameter);
}
public ImageParameter Fix(ImageParameter parameter)
{
parameter.Guid = Guid.Parse(parameter.Id);
parameter.Year = parameter.YearMonth / 100;
parameter.Month = parameter.YearMonth % 100;
if (parameter.Year < 2014 || parameter.Year > DateTime.Now.Year + 1 || parameter.Month < 1 || parameter.Month > 12)
{
throw new Exception("错误的年月格式");
}
parameter.ImageFormat = ("." + parameter.Format).GetImageFormat();
return parameter;
}
public FilePathResult Index(ImageParameter parameter)
{
if (parameter == null)
{
return File(Server.MapPath("~/_storage/css/404.png"), "image/png");
}
parameter = parameter.GetFixed(new DefaultImageParameterFixer());
var physicalPath = Server.MapPath(parameter.GetRelativePath());
var contentType = "image/" + parameter.Format;
lock (string.Intern(physicalPath))
{
if (System.IO.File.Exists(physicalPath))
{
Response.AddHeader("ETag", "0");
Response.AddHeader("Last-Modified", "Thu, 01 Oct 2015 12:07:58 GMT");
Response.AddHeader("Cache-Control", "public");
return File(physicalPath, contentType);
}
var physicalFolder = Path.GetDirectoryName(physicalPath);
IoHelper.CreateDirectoryIfNotExists(physicalFolder);
var service = Ioc.Get<IImageService>();
var originalPath = service.GetOriginalPath(parameter.Guid);
if (string.IsNullOrEmpty(originalPath))
{
return null;
}
var originalFile = Server.MapPath(originalPath);
if (!System.IO.File.Exists(originalFile))
{
return null;
}
using (var sysImage = System.Drawing.Image.FromFile(originalFile))
{
if (parameter.ImageFormat == ImageFormat.Gif)
{
sysImage.Save(physicalPath, ImageFormat.Gif);
}
else
{
using (var sizedImage = sysImage.ToSize(parameter.Size.GetSize()))
{
sizedImage.SaveToFileInQuality(physicalPath, parameter.ImageFormat);
}
}
}
}
return File(physicalPath, contentType);
}
