xml - powershell、xml 和命名空间

Question

我有一些 XML:

<SOAP:Envelope xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">
  <SOAP:Body>
    <P2MessageServiceStatus>
      <CONNECTION>CONNECTION_CONNECTED</CONNECTION>
      <ROUTER>ROUTER_CONNECTED</ROUTER>
    </P2MessageServiceStatus>
  </SOAP:Body>
</SOAP:Envelope>

由于命名空间的原因无法处理它。尝试了很多，但没有成功。

[string]$xpath = '/SOAP:Envelope/SOAP:Body/P2MessageServiceStatus/@CONNECTION'

$wc = New-Object Net.WebClient
[xml]$stuff = $wc.DownloadString($url)

$ns = New-Object Xml.XmlNamespaceManager $stuff.NameTable
$ns.AddNamespace("SOAP", $xmlns)

$xmlvalue = $stuff.SelectSingleNode($xpath, $ns)

Error - need Namespace manager or XsltContext

如果

$xmlvalue = $stuff.SelectSingleNode($xpath,'SOAP')

Error - Unable to find overload for "SelectSingleNode"

如何使 xpath 查询与命名空间一起使用？

Answer 1

我没有看到您定义的 $xmlns 。这有效:

[string]$xpath='/SOAP:Envelope/SOAP:Body/P2MessageServiceStatus/CONNECTION'

$namespaceMgr = New-Object System.Xml.XmlNamespaceManager $stuff.NameTable
$namespace = $stuff.DocumentElement.NamespaceURI
$namespaceMgr.AddNamespace("SOAP", $namespace)


$stuff.SelectSingleNode($xpath,$ns)

注意:您还可以使用 PowerShell访问属性等节点:

$stuff.DocumentElement.Body.P2MessageServiceStatus.CONNECTION