Xml 使用Powershell删除节点

您好，您在XML文档上定义了名称空间，但没有限定XPath。执行以下操作：

[xml]$xml = gc C:\Users\username\Downloads\Test.xml

$supervisor = $xml.SelectSingleNode('//People/Person/EmploymentInformation/Supervisor')
$employmentInformation = $xml.SelectSingleNode('//People/Person/EmploymentInformation')
[void]$employmentInformation.RemoveChild($supervisor)
$xml.Save('C:\Users\username\Downloads\Result.xml')

如果您希望与多人一起执行此操作，则应执行以下操作：

[xml]$xml = gc C:\Users\username\Downloads\Test.xml

$mgr = New-Object -TypeName System.Xml.XmlNamespaceManager -ArgumentList $xml.NameTable
$mgr.AddNamespace("bob","TestData")

$supervisor = $xml.SelectSingleNode('//bob:People/bob:Person/bob:EmploymentInformation/bob:Supervisor', $mgr)
$employmentInformation = $xml.SelectSingleNode('//bob:People/bob:Person/bob:EmploymentInformation', $mgr)
[void]$employmentInformation.RemoveChild($supervisor)
$xml.Save('C:\Users\username\Downloads\Result.xml')

也可以使用Powershell对XML的内置支持：

[xml]$xml = gc .\Test.xml

$mgr = New-Object -TypeName System.Xml.XmlNamespaceManager -ArgumentList $xml.NameTable
$mgr.AddNamespace("bob","TestData")

$supervisors = $xml.SelectNodes('//bob:People/bob:Person/bob:EmploymentInformation/bob:Supervisor', $mgr)

foreach ($supervisor in $supervisors)
{
        $supervisor.ParentNode.RemoveChild($supervisor)
}

$xml.Save('.\Result.xml')

---

当Xml文档名称空间从xmlns=“tnw:grc:import:people”更新到xmlns=“TestData”时，我更新了上面的代码。谢谢Dan！这很有效，但我注意到这只是从第一人称中删除了主管。。。我没有将其包含在上面的XML文档中，但我有多个人希望删除此节点。

[xml]$xml = gc .\Test.xml

$mgr = New-Object -TypeName System.Xml.XmlNamespaceManager -ArgumentList $xml.NameTable
$mgr.AddNamespace("bob","TestData")

$supervisors = $xml.SelectNodes('//bob:People/bob:Person/bob:EmploymentInformation/bob:Supervisor', $mgr)

foreach ($supervisor in $supervisors)
{
        $supervisor.ParentNode.RemoveChild($supervisor)
}

$xml.Save('.\Result.xml')

[xml]$xml = gc .\Test.xml

foreach ($supervisor in $xml.People.Person.EmploymentInformation.Supervisor)
{
        $supervisor.ParentNode.RemoveChild($supervisor)
}

$xml.Save('.\Result.xml')