[VELOCITY-786] NullPointerException while evaluating template

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.4
• Fix Version/s: 1.7, 2.0
• Component/s: Engine
• Environment: FreeBSD 8.0, Java(TM) SE Runtime Environment (build 1.6.0_03-p4-root_19_oct_2010_22_21-b00), Apache Tomcat/6.0.29, Spring 2.5
• Assignee: Unassigned
• Reporter: Pawel Urban
• Created: 03/Nov/10 09:57
• Updated: 07/Jan/18 15:41
• Resolved: 23/Dec/10 23:49

Description

While evaluating template with Velocity I am affecting:

java.lang.NullPointerException
org.apache.velocity.runtime.RuntimeInstance.parse(RuntimeInstance.java:1103)
org.apache.velocity.runtime.RuntimeInstance.parse(RuntimeInstance.java:1086)
org.apache.velocity.runtime.RuntimeInstance.evaluate(RuntimeInstance.java:1199)
org.apache.velocity.runtime.RuntimeInstance.evaluate(RuntimeInstance.java:1165)
org.apache.velocity.app.Velocity.evaluate(Velocity.java:191)
pl.pollub.cafe.zeusx.modules.report.ReportController.generateWorkersSchedule(ReportController.java:300)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:421)
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:136)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:326)
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:313)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:807)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
pl.pollub.cafe.zeusx.commons.spring.FlashScopeFilter.doFilterInternal(FlashScopeFilter.java:33)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

exception.

Code which is being executed:
try

{ Velocity.init(); }

catch (Exception e1)

{ e1.printStackTrace(); }

then

try

{ Velocity.evaluate( context, writer, "string", template.getSzablon()); }

catch (ParseErrorException e)

{ e.printStackTrace(); } catch (MethodInvocationException e) { e.printStackTrace(); }

catch (ResourceNotFoundException e)

{ e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }

This code does not on production server, but works on development machines. I have tried using VelocityEngine instetad of Velocity Signleton but no luck.

I also tried initializing Velocity during servlet startup but nothing changed. Any help appreciated

Issue Links

• duplicates: VELOCITY-750 org.apache.velocity.runtime.RuntimeInstance initialization is not ThreadSafe