Hi Friends,
I want to execute xpath in my code. It means; I have xpath expression, I have
exchange object with In Message.
Using 'XPathExpression' and 'XPathBuilder' classes; I succeed to do so. Below
is the code snippet.
XPathExpression xpathExprObj = new
XPathExpression("/userResponse/User/id");
xpathExprObj.setResultType(String.class);
Object result = xpathExprObj.evaluate(exchange, Object.class);
But, if I have xpath with namespace (i.e xpath = /ns0:userResponse/User/id)..
above code throwing exception .. saying - Prefix must resolve to a namespace:
ns0
Part of Exception:
org.apache.camel.builder.xml.InvalidXPathExpression: Invalid xpath:
/ns0:userResponse/User/id. Reason: javax.xml.xpath.XPathExpressionException
at org.apache.camel.builder.xml.XPathBuilder.evaluateAs(XPathBuilder.java:767)
~[bundlefile:2.11.2-sap-02]
at org.apache.camel.builder.xml.XPathBuilder.evaluate(XPathBuilder.java:748)
~[bundlefile:2.11.2-sap-02]
at org.apache.camel.builder.xml.XPathBuilder.evaluate(XPathBuilder.java:168)
~[bundlefile:2.11.2-sap-02]
at *** My project code calling from here ..
..........
-------
Caused by:
com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception: Prefix
must resolve to a namespace: ns0
at
com.sun.org.apache.xpath.internal.compiler.XPathParser.errorForDOM3(XPathParser.java:653)
~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.compiler.Lexer.mapNSTokens(Lexer.java:638)
~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:265)
~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:96)
~[na:1.6.0_33]
at
com.sun.org.apache.xpath.internal.compiler.XPathParser.initXPath(XPathParser.java:110)
~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:176) ~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:264) ~[na:1.6.0_33]
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:385)
~[na:1.6.0_33]
Upon digging; I found that .. I need to set namespaces to XPathExpression
object .. So, I need list of all namespace.
I am using blueprint beans.xml .. so I need list of all namespaces defined with
blueprint tag in beans.xml.
I have camel exchange and camel endpoint object with me.
I want programmatic solution.
Thanks,
Nurali
