Bitmap.Save 上的 ASP.NET 错误“异常 (0x80004005):GDI+ 中发生一般错误".

问题描述

我有一个函数，它首先从磁盘读取图像，调整其大小，然后保存到另一个目录.

I have a function which first reads an image from disk, resizes it and then saves to another directory.

当我使用 Bitmap.Save(directory + theimagename) 时，它会返回我在问题标题中所述的错误.

when i use the Bitmap.Save(directory + theimagename) it returns the error as i stated in the question title.

我检查了目录是否正确，该目录中不存在给定的图像名称.

i checked the directory is right, and the given image name doesn't exist in that dir.

奇怪的是，相同的代码在本地机器上运行良好.但是当我将它上传到我的共享托管空间时，它就不起作用了.

what is weird, is that the same code works great on the local machine. but when i upload it to my shared hosting space, it just doesn't work.

代码如下.

bmpOut = new Bitmap(Size, Size);
Graphics g = Graphics.FromImage(bmpOut);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.FillRectangle(Brushes.White, 0, 0, Size, Size);
int topBottomPadding = 0; int leftRightPadding = 0;
if (Size > lnNewWidth + 1)
    leftRightPadding = Convert.ToInt32((Size - lnNewWidth) / 2);
else if (Size > lnNewHeight + 1)
    topBottomPadding = Convert.ToInt32((Size - lnNewHeight) / 2);
g.DrawImage(loBMP, leftRightPadding, topBottomPadding, lnNewWidth, lnNewHeight);
Bitmap bmp = new Bitmap(bmpOut);
if (bmp != null)
    bmp.Save(ResizedOutput); // C:InetpubvhostsDomainNamehttpdocsProductImages500pxgigabyte_ga_ep45_ds4_profilelarge[1].jpg
bmp.Dispose();
bmpOut.Dispose();
g.Dispose();
loBMP.Dispose();

堆栈跟踪:

[ExternalException (0x80004005): A generic error occurred in GDI+.]
   System.Drawing.Image.Save(String filename, ImageCodecInfo encoder, EncoderParameters encoderParams) +377630
   System.Drawing.Image.Save(String filename, ImageFormat format) +69
   System.Drawing.Image.Save(String filename) +25
   Utilities.ResizeImage(String fileName, String mode) in c:inetpubvhostsatuhanakcay.comhttpdocsApp_CodeUtilities.cs:181
   Link.ToProductImage(String fileName) in c:inetpubvhostsatuhanakcay.comhttpdocsApp_CodeLink.cs:79
   Product.PopulateControls(ProductDetails pd) in c:inetpubvhostsatuhanakcay.comhttpdocsProduct.aspx.cs:37
   Product.Page_Load(Object sender, EventArgs e) in c:inetpubvhostsatuhanakcay.comhttpdocsProduct.aspx.cs:20

推荐答案

来自 ASP Net - GDI+ 并在服务器上保存 JPG 或 BMP

99.9% 的情况下，在使用 GDI 时，发生一般错误"意味着您要保存到的目录没有适当的权限.通常，您需要确保目录允许 ASP.NET修改文件.

99.9% of the time, when using GDI, 'a generic error occured' means that the directory you are trying to save to doesn't have the proper permissions. Typically, you need to make sure that the directory is allowing ASP.NET to modify files.

你检查权限了吗?