Question

我有以下XML，我正在尝试获取Name属性为ComponentVersion的值。

<Component .......>
  <Settings>
    <Setting Name="ComponentVersion" Value="12345" />
    <Setting Name="Host" Value="false" />
  </Settings>
  <Jobs>
    <Job Name="Platform" />
  </Jobs>
</Component>

我读了这样的XML文件：

$fullPathXML = "$env:PackagesPath\Platform\Components\SystemPlatform.Comp.xml"
[xml]$xmlSystemPlatform = Get-Content $fullPathXML

然后尝试了以下内容：

$xmlSystemPlatform.selectNodes('//Settings/Setting') | select Name
Select-Xml '//Settings/Setting[contains(@Name, "ComponentVersion")]' $xmlSystemPlatform |%{$_.Node.Value}
$xmlSystemPlatform.Settings.Setting[0].Name $xmlSystemPlatform.Settings.Setting[0].Value

Answer 1

$xmlSystemPlatform.Component.Settings.Setting | ? Name -eq "ComponentVersion" | select Value

Answer 2

使用这样的XPath expression应该有效：

$filename = "$env:PackagesPath\Platform\Components\SystemPlatform.Comp.xml"

[xml]$xml = Get-Content $filename

$xml.SelectNodes('//Settings/Setting[@Name = "ComponentVersion"]').Value

请注意，XPath表达式区分大小写。

Answer 3

另一个单行：

([Xml] (Get-Content "$env:PackagesPath\Platform\Components\SystemPlatform.Comp.xml")).SelectNodes("//Settings/Setting[@Name='ComponentVersion']").Value

或者如果您喜欢变量：

$xmlSystemPlatform.SelectNodes("//Settings/Setting[@Name='ComponentVersion']").Value

Powershell读取XML值

3 个答案: