从Base64字符串创建图像时，在GDI+中发生了一个通用错误。

Question

这是我的asp.net mvc项目中的操作方法-

[HttpPost]
public ActionResult UploadSignatureTwo(String imageString)
{      
    byte[] bytes = Convert.FromBase64String(imageString);

    Image img;
    using (MemoryStream ms = new MemoryStream(bytes))
    {
       img = Image.FromStream(ms);
    }
    img.Save(path,ImageFormat.Jpeg); //in app_data folder, has write permission.
}

imageString的示例内容：

  /9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wB .....

为什么会出现“A generic error occurred in GDI+”这个异常？

- s.k.paul

---

你的应用程序数据保存在appdata文件夹中吗？ - Mir Gulam Sarwar

@Mir 是的，它在 app_data 目录中。 - s.k.paul

Answer 1

var bytes = Convert.FromBase64String(image);
using (var imageFile = new FileStream(Path.Combine(path,"test.jpeg"), FileMode.Create))
{
    imageFile.Write(bytes, 0, bytes.Length);
    imageFile.Flush();
}

- decoder