Question

我正在开发一个用C＃下载网站的软件，但我在将文件夹从服务器复制到本地目录时遇到了一些麻烦。我正在为此目的实现以下代码;

  public static void CopyFilesRecursively(DirectoryInfo source, DirectoryInfo target)
  {
      try
      {
          foreach (DirectoryInfo dir in source.GetDirectories())
                CopyFilesRecursively(dir, target.CreateSubdirectory(dir.Name));
          foreach (FileInfo file in source.GetFiles())
                file.CopyTo(Path.Combine(target.FullName, file.Name));
      }
      catch (Exception ex)
      {
          MessageBox.Show(ex.Message, "Form2", MessageBoxButtons.OK, MessageBoxIcon.Error);
      }
  }

函数调用是

private void button4_Click(object sender, EventArgs e)
{                
    try
    {
         CopyFilesRecursively(new DirectoryInfo(@"https:facebook.com"), new DirectoryInfo(@"G:\Projects\"));
    }
    catch (Exception ex)
    {
         MessageBox.Show(ex.Message, "Form2", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}

消息框显示“不支持给定的路径格式。”

Answer 1

我们知道，互联网上托管的所有网站都使用虚拟路径（更易读，更安全）来保存文件和文件夹。实际文件和文件夹位于这些虚拟路径后面的服务器上。因此，要从远程服务器复制文件或文件夹，我们需要资源的实际路径。

我提供以下代码片段，用于从我自己部署的服务器下载文件（我当然知道它的目录结构）

string filename = "MyPage.xml";
string filesource = Server.MapPath("~/MyFiles/") + filename; // server file "MyPage.xml" available in server directory "files"
System.IO.FileInfo fi = new System.IO.FileInfo(filesource);
string filedest = System.IO.Path.GetTempPath()+"MyFile.xml";
fi.CopyTo(filedest);

这些是你可以寻找的其他SO帖子;

How to download a file from a URL in C#?
Copy image file from web url to local folder?
how to copy contents of a website using a .net desktop application
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将文件夹从服务器复制到本地目录

1 个答案: