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我有一个用于压缩文件的 powershell 脚本,但遇到了一些问题。我的脚本的简化版本是:

function MyFunction([__ComObject] $zipFile)
{
   if(test-path($zipFile.Self.Path))
   {
      "Zip path found in MyFunction: " + $zipFile.Self.Path
   }
   else
   {
     "Zip path not found in MyFunction: " + $zipFile.Self.Path
   }
   # Check path directly
   if(test-path("C:\zips\july2013.zip"))
   {
      "Direct zip path found in MyFunction: " + $zipFile.Self.Path
   }
   else
   {
     "Direct zip path not found in MyFunction: " + $zipFile.Self.Path
   }
}

$zipfilepath = "C:\zips\july2013.zip"

if(-not (test-path($zipfilepath)))
{
   set-content $zipfilepath ("PK" + [char]5 + [char]6 + ("$([char]0)" * 18))
   (dir $zipfilepath).IsReadOnly = $false               
}

$shellApplication = new-object -com shell.application
$zipPackage = $shellApplication.NameSpace($zipfilepath)

if( (test-path($zipPackage.Self.Path)))
{
   "Zip exists: " + $zipPackage.Self.Path
}
else
{
    "Zip does not exist: " + $zipPackage.Self.Path
}
MyFunction $zipPackage

如果 C:\zips\july2013.zip 在我运行脚本之前存在,或者我通过打开 powershell 进行调试来运行它,我会得到(如我所料):

Zip exists: C:\zips\july2013.zip
Zip path found in MyFunction: C:\zips\july2013.zip
Direct zip path found in MyFunction: C:\zips\july2013.zip

但是,如果文件不存在 C:\zips\july2013.zip 并且我在不打开 powershell 的情况下运行它(即右键单击“使用 powershell 运行”),我会得到:

Zip exists: C:\zips\july2013.zip
Zip path not found in MyFunction: C:\zips\july2013.zip
Direct zip path not found in MyFunction: C:\zips\july2013.zip

我是powershell的新手,有什么想法吗?

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