为什么没人看文档?每个人都引用的. net 4.5库允许您做任何想做的事情，包括创建空ZIP并向其中添加单个文件。

请看下面的代码示例:

# Load the .NET assembly
Add-Type -Assembly 'System.IO.Compression'
Add-Type -Assembly 'System.IO.Compression.FileSystem'

# Must be used for relative file locations with .NET functions instead of Set-Location:
[System.IO.Directory]::SetCurrentDirectory('.\Desktop')

# Create the zip file and open it:
$z = [System.IO.Compression.ZipFile]::Open('z.zip', [System.IO.Compression.ZipArchiveMode]::Create)

# Add a compressed file to the zip file:
[System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($z, 't.txt', 't.txt')

# Close the file
$z.Dispose()

下面是一个关于如何操作zip存档的概述(只是记得之后关闭文件):

You can compress files by specifying a fourth parameter for CreateEntryFromFile(...). Creating an entry returns a ZipArchiveEntry. This object lets you inspect the zipped file afterwards including letting you report the .CompressedLength, view or change the .LastWriteTime (needs Update mode), and more below. If you need to inspect the ZIP archive later, you can access its .Entries property, and use the methods above as well as view the filename, the full path, the decompressed size, or delete the file (needs Update mode). You can extract an archive two ways later. First open it, then extract either the entire archive or an individual entry (from .Entries or .GetEntry(...)). You can also extract an archive by its filename alone. If you need to work with streams, you can create an empty entry and open its stream for writing afterwards. You can also modify an existing zip entry (from .Entries or .GetEntry(...)), which would let you do everything in-memory.

我鼓励您浏览文档，因为这是我找到所有这些的方法。

编辑二——这段代码是一个非常丑陋的旧代码。你不会想要的。

这将使用system . io . package . zippackage将。\in文件的内容压缩为。\out.zip

$zipArchive = $pwd.path + "\out.zip"
[System.Reflection.Assembly]::Load("WindowsBase,Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")
$ZipPackage=[System.IO.Packaging.ZipPackage]::Open($zipArchive,
  [System.IO.FileMode]"OpenOrCreate", [System.IO.FileAccess]"ReadWrite")
$in = gci .\in | select -expand fullName
[array]$files = $in -replace "C:","" -replace "\\","/"
ForEach ($file In $files)
{
   $partName=New-Object System.Uri($file, [System.UriKind]"Relative")
   $part=$ZipPackage.CreatePart($partName, "application/zip",
      [System.IO.Packaging.CompressionOption]"Maximum")
   $bytes=[System.IO.File]::ReadAllBytes($file)
   $stream=$part.GetStream()
   $stream.Write($bytes, 0, $bytes.Length)
   $stream.Close()
}
$ZipPackage.Close()

编辑:不可靠的大文件，可能>10mb, YMMV。与appdomain证据和隔离存储有关。更友好的。net 4.5方法在PS v3上工作得很好，但在我的情况下需要更多的内存。要从PS v2使用. net 4，配置文件需要一个不受支持的调整。

如果您前往CodePlex并获取PowerShell社区扩展，您可以使用他们的write-zip cmdlet。

自

CodePlex处于只读模式，准备关闭

你可以去PowerShell画廊。

这很晦涩，但很有效。7za.exe是7zip的独立版本，可通过安装包获得。

# get files to be send
$logFiles = Get-ChildItem C:\Logging\*.* -Include *.log | where {$_.Name -match $yesterday} 

foreach ($logFile in $logFiles)
{
    Write-Host ("Processing " + $logFile.FullName)

    # compress file
    & ./7za.exe a -mmt=off ($logFile.FullName + ".7z") $logFile.FullName

}

加载[System.IO.]类，并使用它的方法是抑制不必要错误的重要步骤，因为它不是PowerShell的原生类，所以如果没有它，将会出现各种错误上下文。

我错误地控制了我的脚本到T，但在使用[System.IO.Compression]时得到了很多额外的红色“文件存在”输出。ZipFile)类

function zipFiles(
    [Parameter(Position=0, Mandatory=$true]
    [string] $sourceFolder,
    [Parameter(Position=1, Mandatory=$true]
    [string]$zipFileName,
    [Parameter(Position=2, Mandatory=$false]
    [bool]$overwrite)

{   
Add-Type -Assembly System.IO
Add-Type -Assembly System.IO.Compression.FileSystem

$compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal

$directoryTest = (Test-Path $dailyBackupDestFolder)
$fileTest = (Test-Path $zipFileName)

if ( $directoryTest -eq $false) 
{ 
    New-Item -ItemType Directory -Force -Path $dailyBackupDestFolder 
}

     if ( $fileTest -eq $true)
     {
           if ($overwrite -eq $true ){Remove-Item $zipFileName}
     }   


    try
    {
         [System.IO.Compression.ZipFile]::CreateFromDirectory($sourceFolder,$zipFileName,$compressionLevel)       

    }
    catch [System.IO.IOException] 
    {
       Write-Output ($dateTime + ' | ' + $_.Exception.Message ) | Out-File $logFile -append -force 
    }
} 

我在这里所做的是捕获这些IO错误，例如访问已经存在的文件，捕获该错误并将其指向我正在使用更大的程序维护的日志文件。

为什么没人看文档?每个人都引用的. net 4.5库允许您做任何想做的事情，包括创建空ZIP并向其中添加单个文件。

请看下面的代码示例:

# Load the .NET assembly
Add-Type -Assembly 'System.IO.Compression'
Add-Type -Assembly 'System.IO.Compression.FileSystem'

# Must be used for relative file locations with .NET functions instead of Set-Location:
[System.IO.Directory]::SetCurrentDirectory('.\Desktop')

# Create the zip file and open it:
$z = [System.IO.Compression.ZipFile]::Open('z.zip', [System.IO.Compression.ZipArchiveMode]::Create)

# Add a compressed file to the zip file:
[System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($z, 't.txt', 't.txt')

# Close the file
$z.Dispose()

下面是一个关于如何操作zip存档的概述(只是记得之后关闭文件):

You can compress files by specifying a fourth parameter for CreateEntryFromFile(...). Creating an entry returns a ZipArchiveEntry. This object lets you inspect the zipped file afterwards including letting you report the .CompressedLength, view or change the .LastWriteTime (needs Update mode), and more below. If you need to inspect the ZIP archive later, you can access its .Entries property, and use the methods above as well as view the filename, the full path, the decompressed size, or delete the file (needs Update mode). You can extract an archive two ways later. First open it, then extract either the entire archive or an individual entry (from .Entries or .GetEntry(...)). You can also extract an archive by its filename alone. If you need to work with streams, you can create an empty entry and open its stream for writing afterwards. You can also modify an existing zip entry (from .Entries or .GetEntry(...)), which would let you do everything in-memory.

我鼓励您浏览文档，因为这是我找到所有这些的方法。