XmlDocument.SelectSingleNode 和前缀 + xmlNamespace 问题 [英] XmlDocument.SelectSingleNode and prefix + xmlNamespace issue

问题描述

我将以下字符串加载到 XML 文档中:

I have the following string loaded to an XML document:

<?xml version='1.0' encoding='utf-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">   
   <soapenv:Body>
      <soapenv:Fault>
         <faultcode>soapenv:Server</faultcode>
         <faultstring>El cliente con los parámetros introducidos no existe./faultstring>
         <detail>
            <ns:ClienteWSDo29Exception xmlns:ns="http://services.do29.imq.es">
               <Do29Exception xmlns="http://services.do29.imq.es" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ax211="http://model.do29.imq.es/xsd" xmlns:ax213="http://dto.do29.imq.es/xsd" xmlns:ax29="http://exception.do29.imq.es/xsd" xsi:type="ax29:Do29Exception">
                  <ax29:classname>class es.imq.do29.dao.ClienteDaoImpl</ax29:classname>
                  <ax29:trace xsi:nil="true" />
                  <ax29:previous xsi:nil="true" /> 
                  <ax29:method>getCliente</ax29:method>
                  <ax29:id>1</ax29:id>
                  <ax29:message>El cliente con los parámetros introducidos no existe.</ax29:message>
               </Do29Exception>
            </ns:ClienteWSDo29Exception>
         </detail>
      </soapenv:Fault>
   </soapenv:Body>
</soapenv:Envelope>

然后在xml中使用命名空间的情况下我尝试过:

Then following the case with namespaces in xml i tried:

XmlDocument xmldocu = new XmlDocument();
xmldocu.LoadXml(xml);
XmlNamespaceManager namespaces = new XmlNamespaceManager(xmldocu.NameTable);
namespaces.AddNamespace("ax29", "http://services.do29.imq.es");
XmlNode nodemsgx = xmldocu.SelectSingleNode("//message", namespaces);
XmlNode nodemsg = xmldocu.SelectSingleNode("//ax29:message", namespaces);

但是 nodemsgx 和 nodemsg 为空 :S 正确的做法是什么?我使用//message 因为我想获取该类型的任何节点而不是该节点的特定路径...

But nodemsgx and nodemsg are null :S Whats the correct way to do it? I used //message becouse i want to get any node of that type not the specific path to this node...

推荐答案

XML 文档中的 ax29 前缀设置为 "http://exception.do29.imq.es/xsd" 命名空间，而不是 "http://services.do29.imq.es".

The ax29 prefix in the XML document is set to the "http://exception.do29.imq.es/xsd" namespace, not "http://services.do29.imq.es".

试试这个:

namespaces.AddNamespace("ax29", "http://exception.do29.imq.es/xsd");
XmlNode nodemsg = xmldocu.SelectSingleNode("//ax29:message", namespaces);

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