When using a tag library in an application, I am receiving a
java.lang.ClassCastException as listed in the Subject line, above.
I am using WSAD 4.0 with the WSAD 4.0 j2ee.jar file. The xerces jar
file that we are using is version 1.4.4. I have re-imported
the application's source code, property files, and jar files used by the
application and am receiving the same error.
I have checked the classpath, removed temporary files, etc. The
complete stack traces from the exceptions are below.
Any suggestions appreciated.
Bill Zimmer
[EMAIL PROTECTED]
Stack trace:
java.lang.ClassCastException:
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
at
javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFact
ory.java:147)
at
org.apache.jasper.compiler.JspUtil.parseXMLDoc(JspUtil.java:189)
at
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImp
l.java:507)
at
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.
java:313)
at
org.apache.jasper.compiler.JspParseEventListener.handleDirective(JspPars
eEventListener.java:861)
at
org.apache.jasper.compiler.DelegatingListener.handleDirective(Delegating
Listener.java:116)
at
org.apache.jasper.compiler.Parser$Directive.accept(Parser.java:216)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1115)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1066)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1062)
at
org.apache.jasper.compiler.Compiler.handleParse(Compiler.java:303)
at
org.apache.jasper.compiler.Compiler.compile(Compiler.java:178)
at
org.apache.jasper.runtime.JspServlet.loadJSP(JspServlet.java:828)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.loadIfNecessary(J
spServlet.java:251)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServle
t.java:279)
at
org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at
org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletMan
ager.java:827)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLife
cycleServlet.java:167)
at
com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecy
cleServlet.java:317)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifec
ycleServlet.java:110)
at
com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.jav
a:472)
at
com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(Servle
tManager.java:1012)
at
com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletM
anager.java:913)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispat
ch(WebAppRequestDispatcher.java:721)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppReq
uestDispatcher.java:374)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequ
estDispatcher.java:118)
at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.jav
a:1069)
at
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestPr
ocessor.java:455)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
279)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletMan
ager.java:827)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLife
cycleServlet.java:167)
at
com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecy
cleServlet.java:317)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifec
ycleServlet.java:110)
at
com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.jav
a:472)
at
com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(Servle
tManager.java:1012)
at
com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletM
anager.java:913)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispat
ch(WebAppRequestDispatcher.java:721)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppReq
uestDispatcher.java:374)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequ
estDispatcher.java:118)
at
com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:13
4)
at
com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvo
ker.java:239)
at
com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(Cach
edInvocation.java:67)
at
com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(Servlet
RequestProcessor.java:151)
at
com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEList
ener.java:317)
at
com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnectio
n.java:60)
at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:
391)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:284)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:144)
[1/11/05 10:56:16:830 EST] 452be532 WebGroup X Servlet Error:
C:\phase2\jsps\dataEntryForm.jsp(4,49) JSPG0103E: Unable to open
taglibrary /WEB-INF/poc.tld :
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl:
org.apache.jasper.JasperException: JSPG0103E: Unable to open taglibrary
/WEB-INF/poc.tld : org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
at
org.apache.jasper.compiler.JspParseEventListener.handleDirective(JspPars
eEventListener.java:868)
at
org.apache.jasper.compiler.DelegatingListener.handleDirective(Delegating
Listener.java:116)
at
org.apache.jasper.compiler.Parser$Directive.accept(Parser.java:216)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1115)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1066)
at org.apache.jasper.compiler.Parser.parse(Parser.java:1062)
at
org.apache.jasper.compiler.Compiler.handleParse(Compiler.java:303)
at
org.apache.jasper.compiler.Compiler.compile(Compiler.java:178)
at
org.apache.jasper.runtime.JspServlet.loadJSP(JspServlet.java:828)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.loadIfNecessary(J
spServlet.java:251)
at
org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServle
t.java:279)
at
org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:503)
at
org.apache.jasper.runtime.JspServlet.service(JspServlet.java:651)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletMan
ager.java:827)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLife
cycleServlet.java:167)
at
com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecy
cleServlet.java:317)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifec
ycleServlet.java:110)
at
com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.jav
a:472)
at
com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(Servle
tManager.java:1012)
at
com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletM
anager.java:913)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispat
ch(WebAppRequestDispatcher.java:721)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppReq
uestDispatcher.java:374)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequ
estDispatcher.java:118)
at
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.jav
a:1069)
at
org.apache.struts.action.RequestProcessor.processForwardConfig(RequestPr
ocessor.java:455)
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
279)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletMan
ager.java:827)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLife
cycleServlet.java:167)
at
com.ibm.servlet.engine.webapp.ServicingServletState.service(StrictLifecy
cleServlet.java:317)
at
com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifec
ycleServlet.java:110)
at
com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.jav
a:472)
at
com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(Servle
tManager.java:1012)
at
com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletM
anager.java:913)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispat
ch(WebAppRequestDispatcher.java:721)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppReq
uestDispatcher.java:374)
at
com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequ
estDispatcher.java:118)
at
com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:13
4)
at
com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvo
ker.java:239)
at
com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(Cach
edInvocation.java:67)
at
com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(Servlet
RequestProcessor.java:151)
at
com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEList
ener.java:317)
at
com.ibm.servlet.engine.http11.HttpConnection.handleRequest(HttpConnectio
n.java:60)
at
com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:
391)
at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:284)
at com.ibm.ws.util.CachedThread.run(ThreadPool.java:144)
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