Estou tendo o erro abaixo ao submeter um formulário, o grande problema é que esse erro não ocorre sempre. Quando eu inicio o sistema, eu consigo submeter o formulário varias vezes, sem nenhum problema e “aparentemente sem motivo” começo a ter esse erro…
Begundo a classe “br.com.caelum.iogi.reflection.Target” no método “constructors”, eu vejo que por algum motivo o “cachedConstructor” da minha classe deixa de ser “null” e passar a ser “Java.lang.NullPointerException”
mar 28, 2016 8:58:14 AM org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Servlet.service() for servlet [default] in context with path [/BR-AlarmExpert-v2] threw exception
br.com.caelum.vraptor.http.InvalidParameterException: Exception when trying to instantiate Target(name=entidade, type=class br.com.logique.bralarmexpert.modelo.dominio.AnaliseAlarmesAnunciadosPorTempo)
at br.com.caelum.vraptor.http.iogi.VRaptorInstantiator.handleException(VRaptorInstantiator.java:114)
at br.com.caelum.vraptor.http.iogi.VRaptorInstantiator.instantiate(VRaptorInstantiator.java:106)
at br.com.caelum.vraptor.http.iogi.VRaptorInstantiator.instantiate(VRaptorInstantiator.java:98)
at br.com.caelum.vraptor.http.iogi.VRaptorInstantiator$Proxy$_$$_WeldClientProxy.instantiate(Unknown Source)
at br.com.caelum.vraptor.http.iogi.IogiParametersProvider.instantiateOrAddError(IogiParametersProvider.java:87)
at br.com.caelum.vraptor.http.iogi.IogiParametersProvider.instantiateParameters(IogiParametersProvider.java:80)
at br.com.caelum.vraptor.http.iogi.IogiParametersProvider.getParametersFor(IogiParametersProvider.java:72)
at br.com.caelum.vraptor.http.iogi.IogiParametersProvider$Proxy$_$$_WeldClientProxy.getParametersFor(Unknown Source)
at br.com.caelum.vraptor.observer.ParametersInstantiator.getParametersForCurrentMethod(ParametersInstantiator.java:135)
at br.com.caelum.vraptor.observer.ParametersInstantiator.instantiate(ParametersInstantiator.java:89)
at sun.reflect.GeneratedMethodAccessor217.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:93)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:266)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:253)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:232)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:169)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:165)
at org.jboss.weld.event.ObserverNotifier.notifyObservers(ObserverNotifier.java:119)
at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:112)
at org.jboss.weld.event.EventImpl.fire(EventImpl.java:83)
at br.com.caelum.vraptor.core.DefaultInterceptorStack.start(DefaultInterceptorStack.java:90)
at br.com.caelum.vraptor.core.DefaultInterceptorStack$Proxy$_$$_WeldClientProxy.start(Unknown Source)
at br.com.caelum.vraptor.observer.RequestHandlerObserver.handle(RequestHandlerObserver.java:86)
at sun.reflect.GeneratedMethodAccessor211.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:93)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:266)
at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:253)
at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:232)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:169)
at org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:165)
at org.jboss.weld.event.ObserverNotifier.notifyObservers(ObserverNotifier.java:119)
at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:112)
at org.jboss.weld.event.EventImpl.fire(EventImpl.java:83)
at br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:116)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at java.lang.reflect.Constructor.hashCode(Constructor.java:279)
at java.util.WeakHashMap.hash(WeakHashMap.java:298)
at java.util.WeakHashMap.get(WeakHashMap.java:396)
at java.util.Collections$SynchronizedMap.get(Collections.java:2584)
at com.thoughtworks.paranamer.CachingParanamer.lookupParameterNames(CachingParanamer.java:76)
at com.thoughtworks.paranamer.CachingParanamer.lookupParameterNames(CachingParanamer.java:72)
at br.com.caelum.vraptor.http.ParanamerNameProvider.parametersFor(ParanamerNameProvider.java:47)
at br.com.caelum.vraptor.http.ParanamerNameProvider$Proxy$_$$_WeldClientProxy.parametersFor(Unknown Source)
at br.com.caelum.vraptor.http.iogi.VRaptorParameterNamesProvider.lookupParameterNames(VRaptorParameterNamesProvider.java:57)
at br.com.caelum.vraptor.http.iogi.VRaptorParameterNamesProvider$Proxy$_$$_WeldClientProxy.lookupParameterNames(Unknown Source)
at br.com.caelum.iogi.reflection.ClassConstructor.<init>(ClassConstructor.java:24)
at br.com.caelum.iogi.reflection.Target.constructors(Target.java:115)
at br.com.caelum.iogi.ObjectInstantiator.instantiate(ObjectInstantiator.java:30)
at br.com.caelum.iogi.MultiInstantiator.instantiate(MultiInstantiator.java:20)
at br.com.caelum.vraptor.http.iogi.VRaptorInstantiator.instantiate(VRaptorInstantiator.java:104)
... 53 more