在 PowerShell 中删除 XML 节点会删除我需要的额外标记

Question

我有一个 XML 文件，格式如下：

<?xml version="1.0" encoding="utf-8"?>
<factory>
  <map>
    <add key="Audit" assembly="Python.Platform.Core.dll" class="Python.Core.Audit.Services.Audit">
      <parameter name="configFilePath" class="string" value="Config\Audit\AuditConfiguration.xml" />
    </add>
    <add key="Security.Password" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Security.Services.PasswordSecurityMD5">
    </add>
    <add key="Security.Password.Local" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Security.Services.PasswordSecurityMD5">
    </add>
    <add key="Guest.Registration" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Guest.Services.DbGuestRegistration">
      <parameter name="registrationStoredProcedure" class="string" value="AddNewGuest" />
      <parameter name="updateEncodedKeyStoredProcedure" class="string" value="UpdateGuestEncodedKey" />
      <parameter name="unregistrationStoredProcedure" class="string" value="DeleteGuest" />
      <parameter name="DeleteExpiredGuestStoredProcedure" class="string" value="DeleteExpiredGuest" />
      <parameter name="defaultValidDays" class="int" value="30" />
    </add>
  </map>
</factory>

我的目标是删除此部分：

    <add key="Audit" assembly="Python.Platform.Core.dll" class="Python.Core.Audit.Services.Audit">
      <parameter name="configFilePath" class="string" value="Config\Audit\AuditConfiguration.xml" />
    </add>

我运行宁的PowerShell脚本如下：

$path = "C:\testing\myxml.xml"

[Xml]$myxml = Get-Content -Path $path -Raw

$old = $myxml.SelectSingleNode("/factory/map/add[@key='Audit']")

$parent = $old.ParentNode
[void] $parent.RemoveChild($old)

$myxml.save($path)

不幸的是，当我运行它时，它还会从任何没有参数子节点的添加节点中删除任何结束标记。因此，它现在看起来像这样：

<?xml version="1.0" encoding="utf-8"?>
<factory>
  <map>



    <add key="Security.Password" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Security.Services.PasswordSecurityMD5">

    <add key="Security.Password.Local" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Security.Services.PasswordSecurityMD5">

    <add key="Guest.Registration" assembly="OpenContent.Platform.Core.dll" class="OpenContent.Core.Guest.Services.DbGuestRegistration">
      <parameter name="registrationStoredProcedure" class="string" value="AddNewGuest" />
      <parameter name="updateEncodedKeyStoredProcedure" class="string" value="UpdateGuestEncodedKey" />
      <parameter name="unregistrationStoredProcedure" class="string" value="DeleteGuest" />
      <parameter name="DeleteExpiredGuestStoredProcedure" class="string" value="DeleteExpiredGuest" />
      <parameter name="defaultValidDays" class="int" value="30" />
    </add>
  </map>
</factory>

关于如何在不删除额外的结束标记的情况下将其添加到运行的任何建议？

Answer 1

这似乎是 XmlElement.WriteTo() 和类似方法的默认行为 - 对没有内部非 xml 内容的任何叶元素使用简短标记。

这是由每个元素的 inspecting the IsEmpty property 决定的，因此您可以通过在调用 [=15= 之前将 IsEmpty 设置为 $false 来欺骗作者保留长格式标签]:

# Locate all <add /> nodes with no child elements
$addLeafNodes = $myxml.SelectNodes('//add[not(child::*)]')

# Loop through them
foreach($node in $AddLeafNodes){
    # Set IsEmpty property to false
    $node.IsEmpty = $false
}

# Save document
$myxml.Save($path)

在 PowerShell 中删除 XML 节点会删除我需要的额外标记

Removing XML Node In PowerShell Removes Extra Tags That I Need

xml

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