Question

我正在尝试编写一个NuGet包init.ps1脚本，该脚本将修改.targets文件（XML）的一个值并保存文档。该脚本成功完成所有操作而没有错误，但是当我检查文档时它没有被更改。

这是脚本：

Param($installPath, $toolsPath, $package)

$proj = Get-Project
$pack = $package

# Detect if the project installing the NuGet package is a web application and
# alters an xml element value in the .targets value to prevent duplication
# of application resources when published.

if ($proj.ExtenderNames -contains "WebApplication") {
    # Begin to build neccessary path strings to find the .targets file.
    # The targets file is currently located in
    # \packages\packageName.packageVersion\build\packageName.targets.
    $packageName = [string]$pack.Id

    $packageRootDir = $installPath

    # packageName.Version\build
    $packageBuildFolderPath = Join-Path $packageRootDir "build"

    # packageName.Version\build\packageName
    $targetsFilePath = Join-Path $packageBuildFolderPath ($packageName + ".targets")
    "$targetsFilePath"

    if (Test-Path $targetsFilePath) {
        # If the targets file path has correctly located the file then
        # we edit the targets file to alter the CopyToOutputDirectory element.

        # Load the targets file as an xml object
        $xml = New-Object System.Xml.XmlDocument
        $xml.Load($targetsFilePath)
        "xml loaded"
        # Search each ItemGroup element for the one containing a Content element.
        foreach ($group in $xml.Project.ItemGroup) {
            $nodeExists = $group.Content.CopyToOutputDirectory

            if ($nodeExists) {
                "$nodeExists"
                # Edits the value when we find the correct node
                $nodeExists = "Never"
                "$nodeExists"
            }
        }
        "xml modified"

        # Save the updated document to the correct place.
        $savePath = [string]$targetsFilePath
        "$savePath"
        $xml.Save($savePath)
        "xml Saved to $savePath"
    }
}

以下是脚本块开头到结尾的包管理器输出：

Executing script file 'path to tools/Init.ps1'
'correct path to package/build/package.targets'
xml loaded
Always
Never
xml modified
'correct path to package/build/package.targets'
xml Saved to 'correct path to package/build/package.targets'

Answer 1

您的代码会修改变量$nodeExists的值，但不会修改值来自的XML节点。您可以通过查看循环后的实际XML数据来验证：

$xml.Save([Console]::Out)

要实际修改节点的值，请将代码更改为：

foreach ($group in $xml.Project.ItemGroup) {
    if ($group.Content.CopyToOutputDirectory) {
        $group.Content.CopyToOutputDirectory = 'Never'
    }
}

或者像这样：

$xml.SelectNodes('//Content/CopyToOutputDirectory') | ForEach-Object {
    $_.'#text' = 'Never'
}

请注意，如果您的XML使用名称空间，后者需要namespace manager。

在NuGet init脚本期间保存XML文档不起作用

1 个答案: