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我试图在一些包含命名空间的XML上运行一些xpath查询。不幸的是，它给了我一个相当可怕的错误消息，因为它不能理解xpath查询或XML中的命名空间。JOOX命名空间支持
示例XPath查询是：//b:menuBarItem[@label='Risk']/@id
我可以配置的命名空间中JOOX (1.1.0)，以类似的方式如何，我使用内置的Java库在这里做吗？
private static NamespaceContext createXPathNameSpaceContext(final Map<String, String> namespaces) {
NamespaceContext nsContext = new NamespaceContext() {
public Iterator<String> getPrefixes(String namespaceURI) {
return null;
}
public String getPrefix(String namespaceURI) {
return null;
}
public String getNamespaceURI(String prefix) {
if (namespaces.containsKey(prefix)) {
return namespaces.get(prefix);
} else {
return XMLConstants.NULL_NS_URI;
}
}
};
return nsContext;
}
我用以下代码调用JOOX。
import static org.joox.JOOX.$;
private void extractResponseData(Document responseXML, String xpath) {
String match = $(responseXML).xpath(xpath).get(0).getNodeValue();
// .. etc..
}
显而易见的是，我没有注册名称空间，但我看不出如何。我怀疑自己目光短浅，忽视了API中的某些内容。我从JOOX获得的堆栈跟踪如下。
java.lang.RuntimeException: javax.xml.xpath.XPathExpressionException
at org.joox.Impl.xpath(Impl.java:494)
at org.joox.Impl.xpath(Impl.java:467)
at org.joox.Impl.xpath(Impl.java:93)
at end2end.http.HttpAction$XML.extractResponseData(HttpAction.java:181)
at end2end.http.XMLPostAction.extractResponseData(XMLPostAction.java:26)
at end2end.http.HttpAction.perform(HttpAction.java:58)
at end2end.TestXML$UserAction.fire(TestXML.java:176)
at end2end.TestXML$FireAction.fire(TestXML.java:148)
at end2end.TestXML.multipleUsers(TestXML.java:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:702)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:894)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1219)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:336)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:65)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:88)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1198)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1122)
at org.testng.TestNG.run(TestNG.java:1030)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:215)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)
Caused by: javax.xml.xpath.XPathExpressionException
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:402)
at org.joox.Impl.xpath(Impl.java:486)
at org.joox.Impl.xpath(Impl.java:467)
at org.joox.Impl.xpath(Impl.java:93)
at end2end.http.HttpAction$XML.extractResponseData(HttpAction.java:181)
at end2end.http.XMLPostAction.extractResponseData(XMLPostAction.java:27)
at end2end.http.HttpAction.perform(HttpAction.java:58)
at end2end.TestXML$UserAction.fire(TestXML.java:176)
at end2end.TestXML$FireAction.fire(TestXML.java:148)
at end2end.TestXML.multipleUsers(TestXML.java:120)
... 24 more
Caused by: com.sun.org.apache.xpath.internal.domapi.XPathStylesheetDOM3Exception: Prefix must resolve to a namespace:
at com.sun.org.apache.xpath.internal.compiler.XPathParser.errorForDOM3(XPathParser.java:653)
at com.sun.org.apache.xpath.internal.compiler.Lexer.mapNSTokens(Lexer.java:638)
at com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:265)
at com.sun.org.apache.xpath.internal.compiler.Lexer.tokenize(Lexer.java:96)
at com.sun.org.apache.xpath.internal.compiler.XPathParser.initXPath(XPathParser.java:110)
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:176)
at com.sun.org.apache.xpath.internal.XPath.<init>(XPath.java:264)
at com.sun.org.apache.xpath.internal.jaxp.XPathImpl.compile(XPathImpl.java:394)
at org.joox.Impl.xpath(Impl.java:486)
at org.joox.Impl.xpath(Impl.java:467)
at org.joox.Impl.xpath(Impl.java:93)
at end2end.http.HttpAction$XML.extractResponseData(HttpAction.java:181)
at end2end.http.XMLPostAction.extractResponseData(XMLPostAction.java:26)
at end2end.http.HttpAction.perform(HttpAction.java:58)
at end2end.TestXML$UserAction.fire(TestXML.java:176)
at end2end.TestXML$FireAction.fire(TestXML.java:148)
at end2end.TestXML.multipleUsers(TestXML.java:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:702)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:894)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1219)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:87)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1197)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1122)
at org.testng.TestNG.run(TestNG.java:1030)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
... 1 more