Where is your cayenne.xml located in the assembled .war file? Wonder if it goes missing somehow when you assemble your webapp.
Andrus On Dec 6, 2011, at 4:39 AM, Papa Issa DIAKHATE wrote: > Hello guys, > > i'm using cayenne 3.0.2 and i get NullPointerException when the servlet > mapped to HessianServlet class is called. > here is my web.xml > > <servlet> > <description>Cayenne Webservice</description> > <display-name>Cayenne Webservice</display-name> > <servlet-name>WebserviceServlet</servlet-name> > <servlet-class>org.apache.cayenne.remote.hessian.service.HessianServlet</servlet-class> > <load-on-startup>0</load-on-startup> > </servlet> > <servlet-mapping> > <servlet-name>WebserviceServlet</servlet-name> > <url-pattern>/cayenne-service</url-pattern> > </servlet-mapping> > > as you can see, the HessianServlet is the 1st servlet which is loaded in my > webapp, my the problem is i always get this exception .... always > > java.lang.NullPointerException > at > org.apache.cayenne.remote.hessian.service.HessianService.createSerializerFactory(HessianService.java:72) > at > org.apache.cayenne.remote.hessian.service.HessianServlet.init(HessianServlet.java:77) > at > org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173) > at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993) > at > org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4187) > at > org.apache.catalina.core.StandardContext.start(StandardContext.java:4496) > at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) > at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) > at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) > at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) > at org.apache.catalina.core.StandardService.start(StandardService.java:516) > at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) > at org.apache.catalina.startup.Catalina.start(Catalina.java:593) > 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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) > at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) > 6 déc. 2011 15:29:10 org.apache.catalina.core.StandardContext loadOnStartup > GRAVE: La servlet /thaleia a généré une exception "load()" > java.lang.NullPointerException > at > org.apache.cayenne.remote.hessian.service.HessianService.createSerializerFactory(HessianService.java:72) > at > org.apache.cayenne.remote.hessian.service.HessianServlet.init(HessianServlet.java:77) > at > org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173) > at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:993) > at > org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4187) > at > org.apache.catalina.core.StandardContext.start(StandardContext.java:4496) > at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) > at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) > at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) > at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) > at org.apache.catalina.core.StandardService.start(StandardService.java:516) > at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) > at org.apache.catalina.startup.Catalina.start(Catalina.java:593) > 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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) > at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) > > > here is my cayenne.xml in src/ > <?xml version="1.0" encoding="utf-8"?> > <domains project-version="3.0.0.1"> > <domain name="AppDomain"> > <map name="AppMap" location="AppMap.map.xml" /> > > <node name="AppNode" datasource="jdbc/myds" > factory="org.apache.cayenne.conf.JNDIDataSourceFactory" > <map-ref name="AppMap" /> > </node> > </domain> > </domains> > > in the same directory -> src/ , i also have AppMap.map.xml and > AppNode.driver.xml > > Why do i get that exception ? > thanks in advance for helping > > paissad,
