java.lang.NullPointerException

Spring JIRA | masrawi | 4 years ago
  1. 0

    with tomcat 7 there is no problem. deploying the same war on tomcat 6 with spring 3.2 creates the following error: java.lang.NullPointerException at java.util.Hashtable.get(Hashtable.java:334) at org.apache.tomcat.util.http.Parameters.getParameterValues(Parameters.java:194) at org.apache.tomcat.util.http.Parameters.getParameter(Parameters.java:239) at org.apache.catalina.connector.Request.getParameter(Request.java:1042) at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:355) at javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158) at javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158) at org.springframework.web.context.request.ServletWebRequest.getParameter(ServletWebRequest.java:113) at org.springframework.web.accept.ParameterContentNegotiationStrategy.getMediaTypeKey(ParameterContentNegotiationStrategy.java:60) at org.springframework.web.accept.AbstractMappingContentNegotiationStrategy.resolveMediaTypes(AbstractMappingContentNegotiationStrategy.java:46) at org.springframework.web.accept.ContentNegotiationManager.resolveMediaTypes(ContentNegotiationManager.java:102) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.getAcceptableMediaTypes(AbstractMessageConverterMethodProcessor.java:189) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:114) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:189) at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:69) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:746) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:687) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)

    Spring JIRA | 4 years ago | masrawi
    java.lang.NullPointerException
  2. 0

    with tomcat 7 there is no problem. deploying the same war on tomcat 6 with spring 3.2 creates the following error: java.lang.NullPointerException at java.util.Hashtable.get(Hashtable.java:334) at org.apache.tomcat.util.http.Parameters.getParameterValues(Parameters.java:194) at org.apache.tomcat.util.http.Parameters.getParameter(Parameters.java:239) at org.apache.catalina.connector.Request.getParameter(Request.java:1042) at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:355) at javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158) at javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158) at org.springframework.web.context.request.ServletWebRequest.getParameter(ServletWebRequest.java:113) at org.springframework.web.accept.ParameterContentNegotiationStrategy.getMediaTypeKey(ParameterContentNegotiationStrategy.java:60) at org.springframework.web.accept.AbstractMappingContentNegotiationStrategy.resolveMediaTypes(AbstractMappingContentNegotiationStrategy.java:46) at org.springframework.web.accept.ContentNegotiationManager.resolveMediaTypes(ContentNegotiationManager.java:102) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.getAcceptableMediaTypes(AbstractMessageConverterMethodProcessor.java:189) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:114) at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90) at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:189) at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:69) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:746) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:687) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)

    Spring JIRA | 4 years ago | masrawi
    java.lang.NullPointerException
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    java.lang.NullPointerException
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    java.lang.NullPointerException

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.util.Hashtable.get()
  2. Java RT
    Hashtable.get
    1. java.util.Hashtable.get(Hashtable.java:334)
    1 frame
  3. Grizzly HTTP
    Parameters.getParameter
    1. org.apache.tomcat.util.http.Parameters.getParameterValues(Parameters.java:194)
    2. org.apache.tomcat.util.http.Parameters.getParameter(Parameters.java:239)
    2 frames
  4. Glassfish Core
    RequestFacade.getParameter
    1. org.apache.catalina.connector.Request.getParameter(Request.java:1042)
    2. org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:355)
    2 frames
  5. JavaServlet
    ServletRequestWrapper.getParameter
    1. javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158)
    2. javax.servlet.ServletRequestWrapper.getParameter(ServletRequestWrapper.java:158)
    2 frames
  6. Spring
    ContentNegotiationManager.resolveMediaTypes
    1. org.springframework.web.context.request.ServletWebRequest.getParameter(ServletWebRequest.java:113)
    2. org.springframework.web.accept.ParameterContentNegotiationStrategy.getMediaTypeKey(ParameterContentNegotiationStrategy.java:60)
    3. org.springframework.web.accept.AbstractMappingContentNegotiationStrategy.resolveMediaTypes(AbstractMappingContentNegotiationStrategy.java:46)
    4. org.springframework.web.accept.ContentNegotiationManager.resolveMediaTypes(ContentNegotiationManager.java:102)
    4 frames
  7. Spring MVC
    RequestResponseBodyMethodProcessor.handleReturnValue
    1. org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.getAcceptableMediaTypes(AbstractMessageConverterMethodProcessor.java:189)
    2. org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:114)
    3. org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:90)
    4. org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:189)
    4 frames
  8. Spring
    HandlerMethodReturnValueHandlerComposite.handleReturnValue
    1. org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:69)
    1 frame
  9. Spring MVC
    FrameworkServlet.doGet
    1. org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122)
    2. org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:746)
    3. org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:687)
    4. org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    5. org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
    6. org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
    7. org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)
    8. org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)
    8 frames