2015-02-20 13:45 GMT+01:00 Marco Semiao <marco.sem...@gmail.com>: > Hello, I just use this app : > > http://pukkaone.github.io/2010/12/22/jsp-precompile-application-start.html > > it's works with tomcat 5,6,7 but not tomcat 8. > > Because before, it's possibel to invoque RequestDispatcher into Listener > > Now, call RequestDispatcher throw NPE because the Map is empty. > > 2015-02-20 13:35 GMT+01:00 Konstantin Kolinko <knst.koli...@gmail.com>: > >> 2015-02-19 19:25 GMT+03:00 Marco Semiao <marco.sem...@gmail.com>: >> > Hello, >> > >> > I use on my application a web listener ( ServletContextListener ) that >> > allows you to compile jsp at startup . >> > >> > It does not work on Tomcat 8 in call : >> > servletContext.getRequestDispatcher ( path); >> > >> > >> > Here is the stack : >> > >> > org.apache.catalina.core.ApplicationContext.log Error during mapping >> > java.lang.NullPointerException >> > at org.apache.catalina.mapper.Mapper.internalMapWrapper(Mapper.java:842) >> > at org.apache.catalina.mapper.Mapper.map(Mapper.java:712) >> > at >> > >> org.apache.catalina.core.ApplicationContext.getRequestDispatcher(ApplicationContext.java:503) >> > at >> > >> org.apache.catalina.core.ApplicationContextFacade.getRequestDispatcher(ApplicationContextFacade.java:221) >> > at >> > >> fr.ms.tomcat.servlet.listener.JspCompileRunnable.run(JspCompileRunnable.java:25) >> > This is occurs when the map contextObjectToContextVersionMap is still >> null. >> > >> > It is enriched at the end of the boot StandardServer so after >> initializing >> > listeners . >> > >> > Thread [main] (Suspended (breakpoint at line 265 in Mapper)) >> > owns: MapperListener (id=456) >> > owns: StandardService (id=457) >> > owns: Object (id=458) >> > owns: StandardServer (id=459) >> > Mapper.addContextVersion(String, Host, String, String, Context, >> String[], >> > WebResourceRoot, Collection<WrapperMappingInfo>) line: 265 >> > MapperListener.registerContext(Context) line: 380 >> > MapperListener.registerHost(Host) line: 302 >> > MapperListener.startInternal() line: 110 >> > MapperListener(LifecycleBase).start() line: 150 >> > StandardService.startInternal() line: 450 >> > StandardService(LifecycleBase).start() line: 150 >> > StandardServer.startInternal() line: 769 >> > StandardServer(LifecycleBase).start() line: 150 >> > Catalina.start() line: 625 >> > NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not >> > available [native method] >> > NativeMethodAccessorImpl.invoke(Object, Object[]) line: 57 >> > DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43 >> > Method.invoke(Object, Object...) line: 606 >> > Bootstrap.start() line: 351 >> > Bootstrap.main(String[]) line: 485 >> > >> > >> > >> > it works fine with tomcat 5, 6 and 7. >> > >> > >> > Environnement : >> > apache- tomcat- 8.0.15 or apache -tomcat- 8.0.18 >> > Windows 8.1 >> > Java 7 update 75 >> > >> >> 1. Mailing list rules: >> http://tomcat.apache.org/lists.html#tomcat-users >> -> 6. Do not top-post. >> >> 2. What event is your listener listening for? >> >> If I am understanding you correctly, you are trying to perform a >> request dispatch on a web application that has not started yet. This >> is not going to work. The application that has not completed its >> startup cannot serve requests. >> >> The NPE is ugly, an IllegalStateException would be better. >> From the API specification [1] it looks that the >> ServletContext.getRequestDispatcher() should return null in this >> situation, but I think that will be as confusing as the current NPE. >> >> If you want the NPE to be changed, it would better to prepare some >> source code that demonstrates the issue and open an issue in Bugzilla, >> but at this point I think it is a cosmetic issue and fixing it >> wouldn't solve your problem. >> >> [1] >> http://docs.oracle.com/javaee/7/api/javax/servlet/ServletContext.html#getRequestDispatcher%28java.lang.String%29 >> >> >> Best regards, >> Konstantin Kolinko >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: dev-h...@tomcat.apache.org >> >> >
Sorry really sorry for top post :( http://pukkaone.github.io/2010/12/22/jsp-precompile-application-start.html it's works with tomcat 5,6,7 but not tomcat 8. Because before, it's possibel to invoque RequestDispatcher into Listener Now, call RequestDispatcher throw NPE because the Map is empty.
