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[Hieu Duy Dang <hieu.hispvietnam@xxxxxxxxx>]

** Changed in: dhis2
       Status: New => Fix Committed

** Changed in: dhis2
     Assignee: (unassigned) => Hieu Duy Dang (hieu-hispvietnam)

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https://bugs.launchpad.net/bugs/731078

Title:
  data-browser-export-to-excel-fails-with-NPE-when-datavalue-is-NULL

Status in DHIS 2 - District Health Information Software:
  Fix Committed

Bug description:
  A single data element is displayed with  a value $rowItem  and
  appears in the raw data mode of the data browser. It would seem that
  the data value for the particular data element is also stored as a
  blank cell in the database.

  207;131097;7101;13;"";"admin";"2011-02-09";"No transport";f

  On Export to PDF..
  Exception (java.lang.NumberFormatException): For input string: "" 

  
  On Export to Excel..

  An exception occurred

  Sorry! The system failed to execute the operation. Usually, no data is
  lost and you can continue working by going back to the previous page.
  If you wish to report the incident, please save this page by choosing
  "File -> Save (page as)" in your browser and include the saved page in
  the report. The problem details are listed below.

  [-] Exception (java.lang.NullPointerException): null

      * org.hisp.dhis.system.util.ExcelUtils.writeDataBrowserResults(ExcelUtils.java:372)
      * org.hisp.dhis.databrowser.DefaultDataBrowserXLSService.writeDataBrowserResult(DefaultDataBrowserXLSService.java:93)
      * org.hisp.dhis.dataadmin.action.databrowser.ExportDrillDownResultAction.executeExportResult(ExportDrillDownResultAction.java:95)
      * org.hisp.dhis.dataadmin.action.AbstractExportDataBrowserResult.execute(AbstractExportDataBrowserResult.java:162)
      * sun.reflect.NativeMethodAccessorImpl.invoke0(Unknown source)
      * sun.reflect.NativeMethodAccessorImpl.invoke(Unknown source)
      * sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown source)
      * java.lang.reflect.Method.invoke(Unknown source)
      * com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
      * com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)
      * org.hisp.dhis.webportal.interceptor.XWorkPortalUserInterceptor.intercept(XWorkPortalUserInterceptor.java:82)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.webportal.interceptor.XWorkPortalModuleInterceptor.intercept(XWorkPortalModuleInterceptor.java:85)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.webportal.interceptor.XWorkPortalMenuInterceptor.intercept(XWorkPortalMenuInterceptor.java:91)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.webportal.interceptor.XWorkPortalParamsInterceptor.intercept(XWorkPortalParamsInterceptor.java:117)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.ContextInterceptor.intercept(ContextInterceptor.java:70)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.StyleInterceptor.intercept(StyleInterceptor.java:107)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.SystemSettingInterceptor.intercept(SystemSettingInterceptor.java:94)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.DisplayPropertyInterceptor.intercept(DisplayPropertyInterceptor.java:90)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.SortOrderInterceptor.intercept(SortOrderInterceptor.java:124)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.security.intercept.XWorkSecurityInterceptor.intercept(XWorkSecurityInterceptor.java:98)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:141)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
      * com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.hisp.dhis.interceptor.ExceptionInterceptor.intercept(ExceptionInterceptor.java:98)
      * com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
      * org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
      * org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
      * org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
      * org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
      * org.hisp.dhis.security.filter.RequiredLoginFilter.doFilter(RequiredLoginFilter.java:129)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
      * org.hisp.dhis.security.filter.AutomaticAccessFilter.doFilter(AutomaticAccessFilter.java:112)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
      * org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
      * org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
      * org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
      * org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
      * org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
      * org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
      * org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
      * org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
      * org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
      * org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
      * org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
      * org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
      * org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
      * org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
      * org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
      * org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:440)
      * org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
      * org.mortbay.jetty.Server.handle(Server.java:326)
      * org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
      * org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
      * org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
      * org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
      * org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
      * org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
      * org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)