windows - 在文件名中使用通配符的 Invoke-WebRequest -OutFile

Question

如何在 Invoke-WebRequest 的 -OutFile 参数中引用通配符？

$filename = "Image[1].jpg"
$uri = [System.Uri]"http:/url/to/image.jpg"
Invoke-WebRequest -Uri $uri -OutFile $filename 

这段代码给了我一个异常(exception):

Cannot perform operation because the wildcard path Image[1].jpg did not resolve to a file.

Technet说

Two things to note here. First, we enclosed the path name in single quote marks. That’s not mandatory, but it makes our command a bit easier on the eyes. (As you’ll see in a minute). Second, we needed to preface the square bracket with two back tick characters (``); this tells PowerShell that we want to treat the left square bracket as a regular character and not a wildcard character. Like we said, it looks crazy, but it works:

$filename = 'Image``[1``].jpg'

给我:

Cannot perform operation because the wildcard path Image``[1``].jpg did not resolve to a file.

将文件名更改为

$filename = "Image``[1``].jpg"

不会产生异常，但是保存文件的名字是

Image`[1`].jpg

我很想更改文件名，但要求它们在下载时保持相同的名称。

关于如何使这项工作有任何想法吗？

谢谢

Answer 1

不是优雅的解决方案:

$filename = 'c:\temp\Image(1).jpg'
$uri = [System.Uri]"http://www.google.fr"
Invoke-WebRequest -Uri $uri -OutFile $filename
Rename-Item $filename $filename.Replace('(', '[').Replace(')', ']')