HTTP Status 500 – Internal Server Error


Type Exception Report

Message java.lang.Exception: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: java.lang.Exception: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
	net.sf.ehcache.constructs.web.filter.Filter.logThrowable(Filter.java:143)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:91)
	org.springframework.mobile.device.site.SitePreferenceRequestFilter.doFilterInternal(SitePreferenceRequestFilter.java:56)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.mobile.device.DeviceResolverRequestFilter.doFilterInternal(DeviceResolverRequestFilter.java:60)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:105)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

java.lang.Exception: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:268)
	net.tanho.filter.PageCachingFilter.doFilter(PageCachingFilter.java:71)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)
	org.springframework.mobile.device.site.SitePreferenceRequestFilter.doFilterInternal(SitePreferenceRequestFilter.java:56)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.mobile.device.DeviceResolverRequestFilter.doFilterInternal(DeviceResolverRequestFilter.java:60)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:105)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
	org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
	org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
	org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
	org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
	org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
	org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
	org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPage(CachingFilter.java:302)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:247)
	net.tanho.filter.PageCachingFilter.doFilter(PageCachingFilter.java:71)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)
	org.springframework.mobile.device.site.SitePreferenceRequestFilter.doFilterInternal(SitePreferenceRequestFilter.java:56)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.mobile.device.DeviceResolverRequestFilter.doFilterInternal(DeviceResolverRequestFilter.java:60)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:105)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Root Cause

java.lang.NullPointerException
	net.tanho.controller.tanho.SeriesController.lambda$9(SeriesController.java:130)
	java.util.stream.Collectors.lambda$groupingBy$45(Collectors.java:907)
	java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
	java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384)
	java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
	java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
	java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
	net.tanho.controller.tanho.SeriesController.list(SeriesController.java:130)
	sun.reflect.GeneratedMethodAccessor814.invoke(Unknown Source)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:498)
	org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
	org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
	org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
	org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
	org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
	org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
	org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
	org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
	org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
	org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
	org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
	org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPage(CachingFilter.java:302)
	net.sf.ehcache.constructs.web.filter.CachingFilter.buildPageInfo(CachingFilter.java:247)
	net.tanho.filter.PageCachingFilter.doFilter(PageCachingFilter.java:71)
	net.sf.ehcache.constructs.web.filter.Filter.doFilter(Filter.java:86)
	org.springframework.mobile.device.site.SitePreferenceRequestFilter.doFilterInternal(SitePreferenceRequestFilter.java:56)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.mobile.device.DeviceResolverRequestFilter.doFilterInternal(DeviceResolverRequestFilter.java:60)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:105)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
	org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
	org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat