powershell - 无法将 'System.Object[]' 转换为参数 'System.String' 所需的类型 'Path'。指定错误

Question

运行powershell脚本时出现以下错误

Set-Location : Cannot convert 'System.Object[]' to the type 'System.String' required by parameter 'Path'. Specified error 15-May-2018 08:31:42 method is not supported.

以下是有问题的脚本，请您建议这里有什么问题

cd $lsolutionPath
    Get-ChildItem -Path "$lsolutionPath" -Filter "*Tests" -Recurse -Directory | where {$_.FullName -inotlike "*.sonarqube*"} | ForEach-Object {
    $fullName = $_.FullName
    $projName = $_.BaseName
    write-output $projName
    write-output $fullName

    Write-Output "Starting Build Helper unit test run:3"
    $tests = Get-ChildItem -Path "$fullName" -Recurse -Include *.dll
    Write-Output "Starting Build Helper unit test run:4"
    if($tests -eq $null) {
        Write-Error "Could not find *Tests.dll"
        return 999
        }

    cd $tests.Directory
    Write-Output $tests.Directory
    Write-Output "target args"
    $targetArgs = "\""$tests\"" -nologo -parallel none -noshadow -xml \""$xUnittestResultsPath\$projName.xml\"" -nunit \""$testResultsPath\$projName.xml\"""
    Write-Output "$target args"
     Write-Output "###### Target Args:"**

Answer 1

$tests = Get-ChildItem -Path "$fullName" -Recurse -Include *.dll

cd $tests.Directory

cd是 Set-Location 的别名和 $tests包含多个dll文件，所以 $tests.directory是一个包含多个文件的数组，即显示为 System.Object[] .你不能同时变成所有的。

我不清楚你想改成哪一个，因为你有 -recurse ，所以可能有很多不同的目录。也许您需要 get-childitem ... | Select-Object -First 1或者您可能需要对它们进行循环来处理每一个。