2015-03-17 15:16 GMT+02:00 Thusitha Thilina Dayaratne <thusit...@wso2.com>:
>
> Hi
> >
> > Hi Violeta
> >
> > Hi,
> >
> > 2015-03-16 15:07 GMT+02:00 Thusitha Thilina Dayaratne <
thusit...@wso2.com
> >:
> > >
> > > >>> ERROR {org.apache.catalina.core.ApplicationDispatcher} -
> > > >>> Servlet.service() for servlet bridgeservlet threw exception
> > > >>> java.lang.NullPointerException
> > > >>> at
> > > >>>
> > > >
> > >
> >
>
org.apache.jasper.JspCompilationContext.getTldResourcePath(JspCompilationContext.java:536)
> > > >>> at
> > > >
> org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:410)
> > > >>> at
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:469)
> > > >>> at
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1430)
> > > >>> at org.apache.jasper.compiler.Parser.parse(Parser.java:139)
> > > >
> > > > <snip/>
> > > >
> > > >>>> I can't figure out the reason to get this NullPointerException.
> > > >>>> Can someone help me out?
> > > >
> > > >>> If we knew which version of Tomcat 8 you were using, someone could
> > look
> > > >>> at the relevant source code to try to figure out what was going
on.
> > > > I'm using tomcat version *8.0.20*
> > >
> > > >>Browse to the sourcecode of v8.0.20 of tomcat here:
> > >
> > > >> public TldResourcePath getTldResourcePath(String uri) {
> > > >> return getOptions().getTldCache().getTldResourcePath(uri);
> > > >> }
> > > Thanks for the quick response
> > >
> > > >> Obviously either getOptions() or getTldCache() is returning null.
> > >
> > > I debug the code as you suggest and found that getTldCache() is null.
> > > In the code As I understand there are 2 point which set the *tldCache*
> > > variable
> > > one is the setTldCache() method and other is
> > > public static TldCache getInstance(ServletContext servletContext) {
> > >
> > > if (servletContext == null) {
> > > throw new IllegalArgumentException(Localizer.getMessage(
> > >
> > "org.apache.jasper.compiler.TldCache.servletContextNull"));
> > > }
> > > return (TldCache)
> > > servletContext.getAttribute(SERVLET_CONTEXT_ATTRIBUTE_NAME);
> > > }
> >
> >
> >
> > >>If you can attach a debugger try to see whether the code below is
> invoked:
> >
> > >>org.apache.jasper.servlet.JasperInitializer.onStartup(Set<Class<?>>,
> > >>ServletContext) {
> > >>.....
> > >> context.setAttribute(TldCache.SERVLET_CONTEXT_ATTRIBUTE_NAME,
> > >> new TldCache(context,
> scanner.getUriTldResourcePathMap(),
> > >> scanner.getTldResourcePathTaglibXmlMap()));
> > >>
> > >>}
> > I have checked that as well. But that method didn't get hot when I'm
> > debugging the source.
> > what could be the reason?
>
> >You wrote that you are running an embedded Tomcat. Is that true?
> >In Tomcat 8, Jasper initialization is implemented as a standard
> >ServletContainderInitializer (check Servlet specification).
> >So you should ensure
> >that org.apache.jasper.servlet.JasperInitializer.onStartup is invoked
> >during web app startup
>
> Could someone tell me how can I make sure that this method get call during
> the web app startup?
>You didn't tell us whether you are embedding Tomcat or not.
Thanks for response and I'm Sorry for missing the info in previous mail.
Yes I'm embedding tomcat version 8.0.20
>If you are embedding it which jar files from Tomcat distribution you are
>using etc.
I'm using following tomcat jars
- tomcat-embed-core
- tomcat-embed-jasper
- tomcat-websocket-api
- tomcat-embed-websocket
- tomcat-jasper
>You can start debugging
>with org.apache.catalina.startup.ContextConfig.webConfig()
>- processServletContainerInitializers(sContext);
Thanks
Regards
Thusitha
On Tue, Mar 17, 2015 at 6:56 PM, Violeta Georgieva <miles...@gmail.com>
wrote:
> Hi,
>
> 2015-03-17 15:16 GMT+02:00 Thusitha Thilina Dayaratne <thusit...@wso2.com
> >:
> >
> > Hi
> > >
> > > Hi Violeta
> > >
> > > Hi,
> > >
> > > 2015-03-16 15:07 GMT+02:00 Thusitha Thilina Dayaratne <
> thusit...@wso2.com
> > >:
> > > >
> > > > >>> ERROR {org.apache.catalina.core.ApplicationDispatcher} -
> > > > >>> Servlet.service() for servlet bridgeservlet threw exception
> > > > >>> java.lang.NullPointerException
> > > > >>> at
> > > > >>>
> > > > >
> > > >
> > >
> >
>
> org.apache.jasper.JspCompilationContext.getTldResourcePath(JspCompilationContext.java:536)
> > > > >>> at
> > > > >
> > org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:410)
> > > > >>> at
> org.apache.jasper.compiler.Parser.parseDirective(Parser.java:469)
> > > > >>> at
> org.apache.jasper.compiler.Parser.parseElements(Parser.java:1430)
> > > > >>> at org.apache.jasper.compiler.Parser.parse(Parser.java:139)
> > > > >
> > > > > <snip/>
> > > > >
> > > > >>>> I can't figure out the reason to get this NullPointerException.
> > > > >>>> Can someone help me out?
> > > > >
> > > > >>> If we knew which version of Tomcat 8 you were using, someone
> could
> > > look
> > > > >>> at the relevant source code to try to figure out what was going
> on.
> > > > > I'm using tomcat version *8.0.20*
> > > >
> > > > >>Browse to the sourcecode of v8.0.20 of tomcat here:
> > > >
> > > > >> public TldResourcePath getTldResourcePath(String uri) {
> > > > >> return getOptions().getTldCache().getTldResourcePath(uri);
> > > > >> }
> > > > Thanks for the quick response
> > > >
> > > > >> Obviously either getOptions() or getTldCache() is returning null.
> > > >
> > > > I debug the code as you suggest and found that getTldCache() is null.
> > > > In the code As I understand there are 2 point which set the
> *tldCache*
> > > > variable
> > > > one is the setTldCache() method and other is
> > > > public static TldCache getInstance(ServletContext servletContext) {
> > > >
> > > > if (servletContext == null) {
> > > > throw new IllegalArgumentException(Localizer.getMessage(
> > > >
> > > "org.apache.jasper.compiler.TldCache.servletContextNull"));
> > > > }
> > > > return (TldCache)
> > > > servletContext.getAttribute(SERVLET_CONTEXT_ATTRIBUTE_NAME);
> > > > }
> > >
> > >
> > >
> > > >>If you can attach a debugger try to see whether the code below is
> > invoked:
> > >
> > > >>org.apache.jasper.servlet.JasperInitializer.onStartup(Set<Class<?>>,
> > > >>ServletContext) {
> > > >>.....
> > > >> context.setAttribute(TldCache.SERVLET_CONTEXT_ATTRIBUTE_NAME,
> > > >> new TldCache(context,
> > scanner.getUriTldResourcePathMap(),
> > > >> scanner.getTldResourcePathTaglibXmlMap()));
> > > >>
> > > >>}
> > > I have checked that as well. But that method didn't get hot when I'm
> > > debugging the source.
> > > what could be the reason?
> >
> > >You wrote that you are running an embedded Tomcat. Is that true?
> > >In Tomcat 8, Jasper initialization is implemented as a standard
> > >ServletContainderInitializer (check Servlet specification).
> > >So you should ensure
> > >that org.apache.jasper.servlet.JasperInitializer.onStartup is invoked
> > >during web app startup
> >
> > Could someone tell me how can I make sure that this method get call
> during
> > the web app startup?
>
> You didn't tell us whether you are embedding Tomcat or not.
> If you are embedding it which jar files from Tomcat distribution you are
> using etc.
> You can start debugging
> with org.apache.catalina.startup.ContextConfig.webConfig()
>
> - processServletContainerInitializers(sContext);
>
> Regards,
> Violeta
>
> >
> > Best Regards
> > Thusitha
> >
>
--
Thusitha Dayaratne
Software Engineer
WSO2 Inc. - lean . enterprise . middleware | wso2.com
Mobile +94712756809
Blog alokayasoya.blogspot.com
About http://about.me/thusithathilina
