从虚拟路径物理路径转换 [英] convert from physical path to virtual path

问题描述

我有这个功能，获取的FILEDATA作为字节数组和一个文件路径。当它试图设置的fileInfo在code bewlo我得到的错误是。它说，'物理路径给出，预计虚拟路径

 公共覆盖无效WriteBinaryStorage（字节[] FILEDATA，字符串文件路径）
    {
        尝试
        {
            //如果不存在，创建目录。
            System.IO.FileInfo的fileInfo =新System.IO.FileInfo（System.Web.HttpContext.Current.Server.MapPath（文件路径））; //当它到达这条线被捕获错误
            如果（！fileInfo.Directory.Exists）
            {
                fileInfo.Directory.Create（）;
            }            //写的二进制内容。
            System.IO.File.WriteAllBytes（System.Web.HttpContext.Current.Server.MapPath（文件路径），FILEDATA）;
        }
        赶上（例外）
        {
            扔;
        }
    }
 

在调试它，将提供的文件路径为E：\\\\ \\\\腹板的webapp \\\\ \\\\默认图像\\\\ \\\\电源myImage.jpg这个参数。和错误消息是

 'E：/WEBS/webapp/default/images/mains/myimage.jpg是物理路径，但预计虚拟路径。
 

此外，它是什么触发这​​种情况发生的以下调用

  properties.ResizeImage（imageName，Configurations.ConfigSettings.MaxImageSize，使用Server.Mappath（Configurations.EnvironmentConfig.LargeImagePath））;
 

解决方案

如果你已经有了一个物理路径，它没有意义调用使用Server.Mappath 。

您正在呼叫的MapPath 两次。

I have this function that gets the fileData as a byte array and a file path. The error I am getting is when it tries to set the fileInfo in the code bewlo. It says 'Physical Path given, Virtual Path expected'

 public override void WriteBinaryStorage(byte[] fileData, string filePath)
    {
        try
        {
            // Create directory if not exists.
            System.IO.FileInfo fileInfo = new System.IO.FileInfo(System.Web.HttpContext.Current.Server.MapPath(filePath)); //when it gets to this line the error is caught
            if (!fileInfo.Directory.Exists)
            {
                fileInfo.Directory.Create();
            }

            // Write the binary content.
            System.IO.File.WriteAllBytes(System.Web.HttpContext.Current.Server.MapPath(filePath), fileData);
        }
        catch (Exception)
        {
            throw;
        }
    }

When debugging it, is providing the filePath as "E:\\WEBS\\webapp\\default\\images\\mains\\myimage.jpg" . And the error message is

'E:/WEBS/webapp/default/images/mains/myimage.jpg' is a physical path, but a virtual path was expected.

Also, what it is triggering this to happen is the following call

properties.ResizeImage(imageName, Configurations.ConfigSettings.MaxImageSize, Server.MapPath(Configurations.EnvironmentConfig.LargeImagePath));

解决方案

If you already have a physical path, it doesn't make sense to call Server.MapPath.

You're calling MapPath twice.

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