XPath & Namespace

XPath遇到Namespace的时候取值比较麻烦,需要通过XmlNamespaceManager来添加ns context支持

我一般也是用这种方法来处理Namespace,但是有时需要动态生成XPath,所以我有时会采用以下的方法

//*[local-name()='Header' and namespace-uri()='http://schemas.xmlsoap.org/soap/envelope/']/*[local-name()='TransactionID' and namespace-uri()='http://www.monternet.com/dsmp/schemas/']

//*[local-name()='Header']/*[local-name()='TransactionID']

 

以下摘自阿良.NET

嘻嘻,应阿良的要求,引用自博客园谭振林

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<?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
   xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Header>
        <TransactionID xmlns="http://www.monternet.com/dsmp/schemas/">06070516230084</TransactionID>
    </SOAP-ENV:Header>
    <SOAP-ENV:Body>
        <SyncOrderRelationReq xmlns="http://www.monternet.com/dsmp/schemas/">
            <Version>1.5.0</Version>
            <MsgType>SyncOrderRelationReq</MsgType>
            <Send_Address>
                <DeviceType>0</DeviceType>
                <DeviceID>0011</DeviceID>
            </Send_Address>
            <Dest_Address>
                <DeviceType>400</DeviceType>
                <DeviceID>0</DeviceID>
            </Dest_Address>
            <FeeUser_ID>
                <UserIDType>1</UserIDType>
                <MSISDN>13800138000</MSISDN>
                <PseudoCode>
                </PseudoCode>
            </FeeUser_ID>
            <DestUser_ID>
                <UserIDType>1</UserIDType>
                <MSISDN>13800138000</MSISDN>
                <PseudoCode></PseudoCode>
            </DestUser_ID>
            <LinkID>LinkID</LinkID>
            <ActionID>1</ActionID>
            <ActionReasonID>1</ActionReasonID>
            <SPID>900000</SPID>
            <SPServiceID>abcd</SPServiceID>
            <AccessMode>3</AccessMode>
            <FeatureStr></FeatureStr>
        </SyncOrderRelationReq>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

string xml = "";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
xmlDoc.SelectNodes("//SOAP-ENV:Header/TransationID");//取不到任何节点

 

此时，需要对命名空间一一定义：

 

string xml = "";
XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml(xml);
XmlNamespaceManager xnm = new XmlNamespaceManager(xmldoc.NameTable);
xnm.AddNamespace("SOAP-ENV", "http://schemas.xmlsoap.org/soap/envelope/");
xnm.AddNamespace("Mo", "http://www.monternet.com/dsmp/schemas/");

//注意，就算是用默认命名空间的节点，也要为命名空间定义一个名字，并使用这个名字。
xmldoc.SelectNodes("//SOAP-ENV:Header/Mo:TransationID", xnm);

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以上摘自阿良.NET