Powershell - 在另外两个节点之间插入节点

Question

我想在已经存在的其他2个节点之间插入一个节点.在我的脚本中,我收到一个xml变量,我想更新这个.

例如:

<mapping ...>
    <INSTANCE .. />
    <INSTANCE .. />
    <CONNECTOR .. />
    <CONNECTOR .. />
</mapping>

结果应该是:

<mapping ...>
    <INSTANCE .. />
    <INSTANCE .. />
    <NEWINSERT .../>
    <CONNECTOR .. />
    <CONNECTOR .. />
</mapping>

当我使用appendChild时,插件总是在最后完成...

一个主意 ？

谢谢 !

Answer 1

正如@Grhm回答的那样,你可以做到InsertAfter.我建议总是尝试将其管道Get-Member以获得提示.

> $x = [xml]@"
<mapping>
    <INSTANCE a="abc" />
    <INSTANCE a="abc" />
    <CONNECTOR a="abc" />
    <CONNECTOR a="abc" />
</mapping>
"@

> $x | gm -membertype method

   TypeName: System.Xml.XmlDocument
Name                        MemberType Definition
----                        ---------- ----------
AppendChild                 Method     System.Xml.XmlNode AppendChild(System.Xml
..
ImportNode                  Method     System.Xml.XmlNode ImportNode(System.Xml.
InsertAfter                 Method     System.Xml.XmlNode InsertAfter(System.Xml
InsertBefore                Method     System.Xml.XmlNode InsertBefore(System.Xm
Load                        Method     System.Void Load(string filename), System
...
WriteTo                     Method     System.Void WriteTo(System.Xml.XmlWriter

> $newe = $x.CreateElement('newelement')
> $x.mapping.InsertAfter($newe, $x.mapping.INSTANCE[1])
> $x | Format-Custom

我个人认为gm(或Get-Member)是PowerShell中最有用的cmdlet;)