在 PowerShell 上将节点从一个 XML 导入到另一个

问题描述

我需要将名为ProjectOptions"的节点从 default.xml 复制到 original.xml 而不修改任何其他内容:

I need to copy node with name "ProjectOptions" from default.xml to original.xml without modifying anything else:

原始.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<KEYS>
  <KEY ObjectName="computername_user" RegObjectType="0">
    <KEYS>
      <KEY ObjectName="Desktop" RegObjectType="0">
        <KEYS>
          <KEY ObjectName="Settings" RegObjectType="0">
            <KEYS>
              <KEY ObjectName="PrinterDefault" RegObjectType="0">
                <VALUES>
                  <VALUE ObjectName="PrinterOrientation" Value="2" ValueType="4" />
                </VALUES>
              </KEY>
              <KEY ObjectName="ProjectOptions" RegObjectType="0">
                <VALUES>
                  <VALUE ObjectName="ShowWelcomeMsg" Value="0" ValueType="4" />
                </VALUES>
              </KEY>
            </KEYS>
          </KEY>
        </KEYS>
      </KEY>
    </KEYS>
  </KEY>
</KEYS>

默认.xml

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<KEYS>
  <KEY ObjectName="computername_user" RegObjectType="0">
    <KEYS>
      <KEY ObjectName="Desktop" RegObjectType="0">
        <KEYS>
          <KEY ObjectName="Settings" RegObjectType="0">
            <KEYS>
              <KEY ObjectName="PrinterDefault" RegObjectType="0">
                <VALUES>
                  <VALUE ObjectName="PrinterOrientation" Value="2" ValueType="4"/>
                </VALUES>
              </KEY>
              <KEY ObjectName="ProjectOptions" RegObjectType="0">
                <VALUES>
                  <VALUE ObjectName="GSAddBatchOptionDialogRect" Value="381,203,981,629" ValueType="2"/>
                  <VALUE ObjectName="GSHeadNodeName" Value="" ValueType="2"/>
                  <VALUE ObjectName="GSIsAdvancedMode" Value="1" ValueType="4"/>
                  <VALUE ObjectName="GSRemoteSchedulerPlatform" Value="" ValueType="2"/>
                  <VALUE ObjectName="GSSchedulerName" Value="" ValueType="2"/>
                  <VALUE ObjectName="GSShowFrequentlyUsedBatchOptions" Value="1" ValueType="4"/>
                  <VALUE ObjectName="GSUserName" Value="" ValueType="2"/>
                  <VALUE ObjectName="ShowWelcomeMsg" Value="0" ValueType="4"/>
                </VALUES>
              </KEY>
            </KEYS>
          </KEY>
        </KEYS>
      </KEY>
    </KEYS>
  </KEY>
</KEYS>

我试过这样的事情

$xml = [xml](Get-Content "C:\Temp\original.xml")
$xmld = [xml](Get-Content "C:\Temp\default.xml")
$Child=$xml.KEYS.KEY.KEYS.KEY.KEYS.KEY.KEYS.KEY[1].VALUES.VALUE
$xml.DocumentElement.InsertAfter($XML.ImportNode($xmld.SelectSingleNode("//KEY[@ObjectName = 'ProjectOptions']"), $true), $Child)
$xml.Save("C:\Temp\save.xml")

但它以参考节点不是此节点的子节点"结尾.请告诉我我哪里出错了.谢谢.

But it ended with "The reference node is not a child of this node."Please tell me where I went wrong.Thanks.

推荐答案

你尝试在 DocumentElement 节点下插入导入的节点，但是 $Child 不是直接该节点的子元素.需要在$Child的父节点上调用InsertAfter()方法.

You try to insert the imported node under the DocumentElement node, but $Child is not a direct child element of that node. You need to call the InsertAfter() method on the parent node of $Child.

改变这个:

$xml.DocumentElement.InsertAfter($XML.ImportNode($xmld.SelectSingleNode("//KEY[@ObjectName = 'ProjectOptions']"), $true), $Child)

进入这个:

$Child.ParentNode.InsertAfter($XML.ImportNode($xmld.SelectSingleNode("//KEY[@ObjectName='ProjectOptions']"), $true), $Child)

问题就会消失.

作为旁注，您可能希望使用 XPath 表达式而不是点符号来选择 $Child:

As a side note, you may want to use an XPath expression instead of dot-notation for selecting $Child:

$Child = $xml.SelectSingleNode('//VALUE[@ObjectName="ShowWelcomeMsg"]')

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