[ http://jira.codehaus.org/browse/DISPL-148?page=all ] fabrizio giustina closed DISPL-148: -----------------------------------
Marking fixed issue as closed. > Sporadic error with factory.requestHelper > ----------------------------------------- > > Key: DISPL-148 > URL: http://jira.codehaus.org/browse/DISPL-148 > Project: DisplayTag > Type: Bug > Components: I18N > Versions: 1.0 RC2 > Reporter: fabrizio giustina > Assignee: fabrizio giustina > Fix For: 1.0 > > > from displaytag forum: > Hi I'm getting the following error sporadically with Tomcat 5.0 and Struts > 1.2 > ERROR properties.TableProperties - Exception: [.TableProperties] Cannot > instantiate > the class "null", specified by the property "factory.requestHelper". > Cause: null > java.lang.NullPointerException > at java.lang.Class.forName0(Native Method) > at java.lang.Class.forName(Class.java:141) > at > org.displaytag.properties.TableProperties.getClassPropertyInstance(TableProp > erties.java:785) > at > org.displaytag.properties.TableProperties.getRequestHelperFactoryInstance(Ta > bleProperties.java:728) > at org.displaytag.tags.TableTag.initParameters(TableTag.java:669) > at org.displaytag.tags.TableTag.doStartTag(TableTag.java:551) > at > org.apache.jsp.web.jsp.searchlist_jsp._jspService(searchlist_jsp.java:355) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:3 > 24) > at > org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application > FilterChain.java:237) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh > ain.java:157) > at > org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher. > java:704) > at > org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDis > patcher.java:474) > at > org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatch > er.java:409) > at > org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher > .java:312) > at > org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:10 > 56) > at > org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProces > sor.java:388) > at > org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231) > at > org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) > at > org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application > FilterChain.java:237) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh > ain.java:157) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja > va:214) > at > org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex > t.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) > at > org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContext > Valve.java:198) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja > va:152) > at > org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex > t.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137 > ) > at > org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex > t.java:104) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118 > ) > at > org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex > t.java:102) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java > :109) > at > org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContex > t.java:104) > at > org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) > at > org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) > at > org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne > ction(Http11Protocol.java:705) > at > org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:683) > at java.lang.Thread.run(Thread.java:534) -- This message is automatically generated by JIRA. - 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