仅当部署在服务器上时，GDI + / ASP.Net中才会发生一般错误

Question

我们的代码中有这个方法。它将图像（png，gif等）转换为jpeg。

  public static byte[] ImageToJpeg(byte[] content, long quality)
    {
        try
        {
            byte[] fileContent = null;
            using (System.IO.MemoryStream readMemoryStream = new System.IO.MemoryStream(content))
            {
                using (System.Drawing.Bitmap image = (System.Drawing.Bitmap)System.Drawing.Bitmap.FromStream(readMemoryStream, true))
                {
                    System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.Quality;
                    System.Drawing.Imaging.ImageCodecInfo jpgCodecInfo = GetEncoder(System.Drawing.Imaging.ImageFormat.Jpeg);
                    System.Drawing.Imaging.EncoderParameters encoderParameters = new System.Drawing.Imaging.EncoderParameters(1);
                    System.Drawing.Imaging.EncoderParameter encoderParameter = new System.Drawing.Imaging.EncoderParameter(encoder, quality);
                    encoderParameters.Param[0] = encoderParameter;

                    using (System.IO.MemoryStream writeMemoryStream = new System.IO.MemoryStream())
                    {
                        image.Save(writeMemoryStream, jpgCodecInfo, encoderParameters);
                        fileContent = writeMemoryStream.ToArray();
                    }
                }
            }

            return fileContent;
        }
        catch (System.Exception exception)
        {
            System.InvalidCastException invalidCastException = new System.InvalidCastException("Invalid conversion", exception);
            throw invalidCastException;
        }
    }

它适用于我们的语言环境机器上的所有图像。部署在服务器上时，我们在此方法中获得了一些“GDI +中发生了一般错误”错误。

有什么想法吗？谢谢！