根据文件名打开文件夹中的所有文件并重新保存在创建的文件夹目录中

请尝试以下操作：

# Input and output (root) directory paths.
$inPath = 'Z:\PDF Archive\2010'
$outPathRoot = 'Z:\PDF Archive'

# The max. number of digits in the input file names.
$maxDigits = 7

Get-ChildItem -LiteralPath $inPath -Filter *.pdf | ForEach-Object {

  # Left-pad the number string that constitutes the base file name
  # with zeros to ensure a length of 7.  
  $paddedNum = $_.BaseName.PadLeft($maxDigits, '0')

  # Construct the name of the subdirectories to copy the files to,
  # replacing the digits after the leading 2 and 3 digits first with "0" and "9",
  # respectively, joining the resulting strings with "-"
  $subDirs = 
    foreach ($leadingDigits in $paddedNum.Substring(0, 2), $paddedNum.Substring(0, 3)) {
      ($leadingDigits + '0' * ($maxDigits - $leadingDigits.Length)),
      ($leadingDigits + '9' * ($maxDigits - $leadingDigits.Length)) -join '-'
    }

  # Create the output subdirectories, if necessary.
  # -Force both creates parent directories on demand and 
  # quietly returns an existing directory, if present.
  $targetDir = New-Item -Type Directory -Force ($outPathRoot + '\' + ($subDirs -join '\'))

  # Copy the PDF file at hand to the target subdirectory.
  $_ | Copy-Item -Destination $targetDir.FullName

}

注意：如果将-WhatIfcommon 参数添加到Copy-Item命令中，您将获得复制操作的预览，其中将包括完整的目标路径。