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POissue parsing xml with namespaces using jdk xpath
 

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  1. POissue parsing xml with namespaces using jdk xpath
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    <p>I am having difficulty trying to parse an XML content with Xpath. Xml includes namespace information. I have tried to create a NameSpaceContextImp (apache WS commons implementations of NameSpaceContext interface in jdk) to map the namaspace prefixes to URIs, however couldn't successfully queried the xml document. When I use online xpath testing tool at <a href="http://chris.photobooks.com/xml/default.htm" rel="nofollow">http://chris.photobooks.com/xml/default.htm</a>, the xpath query I use comes up with my expected nodes/elements. So I am trying to figure out what it is that I am doing wrong. I am providing the xml document and the sample code snippet. I would appreciate any feedback. As a note, I have tried xpath queries both with and without the namespace prefixes. </p> <pre><code>NamespaceContextImpl namespaceContext = new NamespaceContextImpl(); namespaceContext.startPrefixMapping("wsp", "http://schemas.xmlsoap.org/ws/2002/12/policy"); namespaceContext.startPrefixMapping("L7p", "http://www.layer7tech.com/ws/policy"); String policyXml = "xml content that is pasted below" InputSource inputSource = new InputSource(new StringReader(policyXml)); XPathFactory xpathFactory = XPathFactory.newInstance(); XPath xPath = xpathFactory.newXPath(); xPath.setNamespaceContext(namespaceContext); XPathExpression xpathExpression = xPath.compile("/wsp:Policy/wsp:All"); String evaluation = xpathExpression.evaluate(inputSource); if (evaluation.trim().length() &gt; 0) { System.out.println(evaluation); } &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;wsp:Policy xmlns:L7p="http://www.layer7tech.com/ws/policy" xmlns:wsp="http://schemas.xmlsoap.org/ws/2002/12/policy"&gt; &lt;wsp:All wsp:Usage="Required"&gt; &lt;L7p:SetVariable&gt; &lt;L7p:AssertionComment assertionComment="included"&gt; &lt;L7p:Properties mapValue="included"&gt; &lt;L7p:entry&gt; &lt;L7p:key stringValue="RIGHT.COMMENT"/&gt; &lt;L7p:value stringValue="Used to enable message logging, Null (allow MSGDEBUG Header to set level), 0 - default,1 - Medium,2 - Full"/&gt; &lt;/L7p:entry&gt; &lt;/L7p:Properties&gt; &lt;/L7p:AssertionComment&gt; &lt;L7p:Base64Expression stringValue=""/&gt; &lt;L7p:VariableToSet stringValue="LOCAL_POLICY_DEBUG_LEVEL"/&gt; &lt;/L7p:SetVariable&gt; &lt;L7p:Include&gt; &lt;L7p:PolicyGuid stringValue="ec1f4166-4299-4e44-bf9d-c5c2a9f0c894"/&gt; &lt;/L7p:Include&gt; &lt;L7p:SslAssertion&gt; &lt;L7p:Option optionValue="Optional"/&gt; &lt;/L7p:SslAssertion&gt; &lt;wsp:OneOrMore L7p:Enabled="false" wsp:Usage="Required"&gt; &lt;L7p:SpecificUser&gt; &lt;L7p:Enabled booleanValue="false"/&gt; &lt;L7p:IdentityProviderOid longValue="-2"/&gt; &lt;L7p:UserLogin stringValue="test"/&gt; &lt;L7p:UserName stringValue="test"/&gt; &lt;L7p:UserUid stringValue="58916874"/&gt; &lt;/L7p:SpecificUser&gt; &lt;L7p:SpecificUser&gt; &lt;L7p:Enabled booleanValue="false"/&gt; &lt;L7p:IdentityProviderOid longValue="-2"/&gt; &lt;L7p:UserLogin stringValue="test"/&gt; &lt;L7p:UserName stringValue="test"/&gt; &lt;L7p:UserUid stringValue="58916873"/&gt; &lt;/L7p:SpecificUser&gt; &lt;L7p:SpecificUser&gt; &lt;L7p:Enabled booleanValue="false"/&gt; &lt;L7p:IdentityProviderOid longValue="-2"/&gt; &lt;L7p:UserLogin stringValue="test"/&gt; &lt;L7p:UserName stringValue="test"/&gt; &lt;L7p:UserUid stringValue="58916876"/&gt; &lt;/L7p:SpecificUser&gt; &lt;L7p:SpecificUser&gt; &lt;L7p:Enabled booleanValue="false"/&gt; &lt;L7p:IdentityProviderOid longValue="-2"/&gt; &lt;L7p:UserLogin stringValue="test"/&gt; &lt;L7p:UserName stringValue="test"/&gt; &lt;L7p:UserUid stringValue="58916875"/&gt; &lt;/L7p:SpecificUser&gt; &lt;L7p:SpecificUser&gt; &lt;L7p:Enabled booleanValue="false"/&gt; &lt;L7p:IdentityProviderOid longValue="-2"/&gt; &lt;L7p:UserLogin stringValue="testengineering-user"/&gt; &lt;L7p:UserName stringValue="testengineering-user"/&gt; &lt;L7p:UserUid stringValue="48201728"/&gt; &lt;/L7p:SpecificUser&gt; &lt;/wsp:OneOrMore&gt; &lt;wsp:OneOrMore wsp:Usage="Required"&gt; &lt;L7p:HttpRoutingAssertion&gt; &lt;L7p:ProtectedServiceUrl stringValue="http://localhost:13000/Services/Finance/v1"/&gt; &lt;L7p:RequestHeaderRules httpPassthroughRuleSet="included"&gt; &lt;L7p:Rules httpPassthroughRules="included"&gt; &lt;L7p:item httpPassthroughRule="included"&gt; &lt;L7p:Name stringValue="Cookie"/&gt; &lt;/L7p:item&gt; &lt;L7p:item httpPassthroughRule="included"&gt; &lt;L7p:Name stringValue="SOAPAction"/&gt; &lt;/L7p:item&gt; &lt;/L7p:Rules&gt; &lt;/L7p:RequestHeaderRules&gt; &lt;L7p:RequestParamRules httpPassthroughRuleSet="included"&gt; &lt;L7p:ForwardAll booleanValue="true"/&gt; &lt;L7p:Rules httpPassthroughRules="included"/&gt; &lt;/L7p:RequestParamRules&gt; &lt;L7p:ResponseHeaderRules httpPassthroughRuleSet="included"&gt; &lt;L7p:Rules httpPassthroughRules="included"&gt; &lt;L7p:item httpPassthroughRule="included"&gt; &lt;L7p:Name stringValue="Set-Cookie"/&gt; &lt;/L7p:item&gt; &lt;/L7p:Rules&gt; &lt;/L7p:ResponseHeaderRules&gt; &lt;/L7p:HttpRoutingAssertion&gt; &lt;L7p:Include&gt; &lt;L7p:PolicyGuid stringValue="b438384e-eeb0-45c5-8a7e-d30da78f07ee"/&gt; &lt;/L7p:Include&gt; &lt;/wsp:OneOrMore&gt; &lt;/wsp:All&gt; &lt;/wsp:Policy&gt; </code></pre>
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