在对 SOAP 的 XML 响应中获取节点的值 [英] Getting value for node in XML response to SOAP

问题描述

我正在 PowerShell 中发出这样的 SOAP 请求:

I'm making a SOAP request in PowerShell like this:

$uri = "https://secure.echosign.com/services/EchoSignDocumentService20?WSDL"

$sun = Invoke-WebRequest $uri -Method post -ContentType "text/xml"  -InFile .\getUrl.xml

文件"如下所示:

<api:getDocumentUrls>
  <api:apiKey>redacted</api:apiKey>
  <api:documentKey>REDACTED</api:documentKey>
  <api:options>
    <dto1:attachSupportingDocuments>true</dto1:attachSupportingDocuments> 
    <dto1:combine>true</dto1:combine>
    <dto1:auditReport>true</dto1:auditReport>    
  </api:options>
</api:getDocumentUrls>

我没有收到任何错误，SoapUI 中测试的响应 xml 如下所示:

I'm not getting any errors and the xml of the response as tested in SoapUI looks like this:

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soap:Body>
    <ns1:getDocumentUrlsResponse xmlns:ns1="http://api.echosign">
      <ns1:getDocumentUrlsResult>
        <errorCode xmlns="http://dto14.api.echosign">OK</errorCode>
        <errorMessage xsi:nil="true" xmlns="http://dto14.api.echosign"/>
        <success xmlns="http://dto14.api.echosign">true</success>
        <supportingDocumentUrls xsi:nil="true" xmlns="http://dto14.api.echosign"/>
        <urls xmlns="http://dto14.api.echosign">
          <DocumentUrl>
            <name>test.pdf</name>
            <url>https://smuszconsulting.echosign.com/document/cp/2AAABLblqZhAOjW1Dv6ig0pMc1PaF5BSHiCNNVAU6PEBmVizdpa9kFwkX5wQurgfu7P0atiSKop4*/document.pdf</url>
          </DocumentUrl>
        </urls>
      </ns1:getDocumentUrlsResult>
    </ns1:getDocumentUrlsResponse>
  </soap:Body>
</soap:Envelope>

我需要将该 URL DocumentUrl.url 放入一个变量中，以便将其写入数据库，但我不知道如何.

I need to get that URL DocumentUrl.url into a variable so I can write it to a DB, but I can't figure out how.

我试过了:

$newObj = $sun.getDocumentUrlsresponse.ChildNodes | % { $_.Name; $_.InnerText }

但这不起作用.甚至没有创建对象.

but that's not working. The object is not even created.

好的..我把我的代码改成这样:

Ok ..I changed my code to look like this:

$uri = "https://secure.echosign.com/services/EchoSignDocumentService20?wsdl"

[xml]$sun = Invoke-WebRequest $uri -Method post -ContentType "text/xml"  -InFile .\getUrl.xml

$nsm = New-Object Xml.XmlNamespaceManager($sun.NameTable)
$nsm.AddNamespace('ns', 'http://dto14.api.echosign')
$url = $sun.SelectSingleNode('//ns:DocumentUrl/ns:url').innerText

现在我收到此错误:

Exception calling "SelectSingleNode" with "1" argument(s): "Namespace Manager
or XsltContext needed. This query has a prefix, variable, or user-defined
function."
At C:\Program Files\DCESS_InfoGatherer\testingGetUrl.ps1:53 char:1
+ $url = $sun.SelectSingleNode('//ns:DocumentUrl/ns:url').innerText
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

有什么方法可以像使用 SoapUI 一样查看响应中的 XML?

Is there some way to see the XML in the response like I can using SoapUI?

我什至不知道我得到的回复是否正确.

I don't even really know if the response I'm getting is correct.

推荐答案

XML 使用命名空间.有问题的命名空间是在 节点上定义的:

The XML uses namespaces. The namespace in question is the defined on the <urls> node:

<urls xmlns="http://dto14.api.echosign">

嵌套节点使用这个命名空间作为它们的默认命名空间，所以你需要一个命名空间管理器来访问它们.

The nested nodes use this namespace as their default namespace, so you need a namespace manager to access them.

[xml]$xml = $xmlResponseText  # turn the XML text into an XML object

$nsm = New-Object Xml.XmlNamespaceManager($xml.NameTable)
$nsm.AddNamespace('ns', 'http://dto14.api.echosign')
$url = $xml.SelectSingleNode('//ns:DocumentUrl/ns:url', $nsm).innerText

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