使用powershell编辑多个XML文件

Question

如何从指定目录获取多个XML文件的列表,并为每个文件使用powershell在第二个根节点下添加元素？

示例:我想<LastName>SomeName</LastName>在FIRST <Names>元素中添加:

<People>
  <Names>
      <FirstName>someFirstName</FirstName>
  </Names>
  <Names>
      <FirstName>myFirstName</FirstName>
      <Address>SomeAddress</Address>
  </Names>
</People>

会变成:

<People>
  <Names>
      <LastName>SomeName</LastName>
      <FirstName>someFirstName</FirstName>
  </Names>
  <Names>
      <FirstName>myFirstName</FirstName>
      <Address>SomeAddress</Address>
  </Names>
</People>

Answer 1

你可以用它CreateElement和AppendChild方法来做

Get-ChildItem c:\temp\ *.xml | 
    % { 
        $xml      = [xml](Get-Content $_.fullname)
        $lastName = $xml.CreateElement('LastName')
        $lastName.PsBase.InnerText = 'SomeName'
        $null     = $xml.People.Names[0].AppendChild($lastName)
        $xml.Save($_.FullName)
    }

如果您运行PowerShell V2,则不需要使用属性PsBase:

        $lastName.InnerText = 'SomeName'

肯定有其他方法,但这很容易.

如果节点在xml中更深,你可以像这样使用Xpath(都找到第一个Names节点):

$node = (Select-Xml -Xml $x -XPath '//Names[1]').Node
$node = (Select-Xml -Xml $x -XPath '//Names[position()=1]').Node