安装Chocolatey软件包时，请在PowerShell中尝试/catch

Question

我一直在尝试创建一个脚本，用于在PowerShell中安装Chocolatey包。这很好，但我想解析Chocolatey的输出。我想的是类似的东西

$package = "something I want"
try         
{
    $installCommand = "choco install $package"
    iex $installCommand -ErrorAction Stop -WarningAction Stop
}
catch
{
    #Print error messages, i.e. $_.Exception.Message
}

我是PowerShell的新手，我已经尝试过如何使用try/catch。我试过

try {
    $command = "choco install asdasdasdasdasdad"
    iex $command -ErrorAction Stop -WarningAction Stop
}
catch  {
    $message = $_.Exception.Message
    Write-Host $message
}

但这给了我

Installing the following packages: asdasdasdasdasdad
By installing you accept licenses for the packages.
asdasdasdasdasdad not installed. The package was not found with the source(s) listed. 
If you specified a particular version and are receiving this message, it is possible that the package name exists but the version does not.
Version: ""  Source(s): "https://chocolatey.org/api/v2/"
Chocolatey installed 0/1 package(s). 1 package(s) failed. 
See the log for details (C:ProgramDatachocolateylogschocolatey.log).
Failures:
  - asdasdasdasdasdad

有什么建议吗？提前，谢谢！

---

我发现了一个代码示例，它帮助我前进：

function testInstall
{
    Param (
        [string] $package
    )
    Begin
    {
        Write-Host "Now in Begin.. Going on!"
    }
    Process
    {
        Write-Host "Starting Process"
        Write-Host ""
        $chocoCommand = "choco install $package"
        iex $chocoCommand
        Write-Host ""
        Write-Host "Ending Process"
    }
    End
    {
        Write-Host "Now in End"
    }

}
Function Test-Demo
{
    Param ($Param1)
    Begin {
        write-host "Starting"
    }
    Process {
        if($_ -eq " Use --force to reinstall, specify a version to install, or try upgrade.")
        {
         $forceDetected = $true;
        }
        write-host $_
    }
    End {
        if($forceDetected -eq $true)
        {
            Write-Warning "Force detected"
            Write-Warning "Do you want to re-run the installer with --force?"
            # Promt the user Y/N option and re-run testInstall -package $package --force
        }
        write-host "Ending"
    }
}
testInstall -package ruby | Test-Demo Sample

这将使我有机会询问用户是否希望重新运行带有--force参数的脚本。唯一的问题是choco的输出失去了颜色。有什么建议吗？

Answer 1

需要Windows管理框架5:

register-packagesource -Name chocolatey -Provider PSModule -Trusted -Location http://chocolatey.org/api/v2/ -Verbose

我在这里找到了这个：https://serverfault.com/questions/633576/how-do-you-manually-set-powershells-oneget-repository-source-to-chocolatey

然后，您应该能够运行这样的程序并获得详细的输出：

Get-Package Nodejs | Install-Package -Verbose

Answer 2

经过一些测试，我做了这个。它正在开发中，但它解析输出，我可以在最后打印安装摘要（或者我最终要做的任何事情）。

欢迎发表评论。

https://github.com/bpjohannessen/ChocoPower

（我明天会把它标记为答案）