java.lang.NullPointerException

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  • When rendering a JSF view that is not part of flow request a NullPointerException is thrown: {noformat} java.lang.NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView(FlowViewStateManager.java:181) at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:221) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:406) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135) at org.springframework.springfaces.FacesView.renderMergedOutputModel(FacesView.java:39) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:662) {noformat} The StateManager should probably just delegate if JsfUtils.isFlowRequest() returns false: {code} if (context.getViewRoot().isTransient()) { return null; } if(!JsfUtils.isFlowRequest()) { return delegate.saveView(context); } FlowSerializedView view = null; if (JsfRuntimeInformation.isPartialStateSavingSupported()) { Object[] state = (Object[]) delegate.saveView(context); view = new FlowSerializedView(context.getViewRoot().getViewId(), state[0], state[1]); } else { view = new FlowSerializedView(context.getViewRoot().getViewId(), getTreeStructureToSave(context), getComponentStateToSave(context)); } ... {code}
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  • When rendering a JSF view that is not part of flow request a NullPointerException is thrown: {noformat} java.lang.NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView(FlowViewStateManager.java:181) at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:221) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:406) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135) at org.springframework.springfaces.FacesView.renderMergedOutputModel(FacesView.java:39) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:662) {noformat} The StateManager should probably just delegate if JsfUtils.isFlowRequest() returns false: {code} if (context.getViewRoot().isTransient()) { return null; } if(!JsfUtils.isFlowRequest()) { return delegate.saveView(context); } FlowSerializedView view = null; if (JsfRuntimeInformation.isPartialStateSavingSupported()) { Object[] state = (Object[]) delegate.saveView(context); view = new FlowSerializedView(context.getViewRoot().getViewId(), state[0], state[1]); } else { view = new FlowSerializedView(context.getViewRoot().getViewId(), getTreeStructureToSave(context), getComponentStateToSave(context)); } ... {code}
    via by !!Use pwebb rather than philw,
    • java.lang.NullPointerException at org.springframework.faces.webflow.FlowViewStateManager.saveView(FlowViewStateManager.java:181) at com.sun.faces.application.view.WriteBehindStateWriter.flushToWriter(WriteBehindStateWriter.java:221) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:406) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269) at org.springframework.faces.webflow.FlowViewHandler.renderView(FlowViewHandler.java:99) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135) at org.springframework.springfaces.FacesView.renderMergedOutputModel(FacesView.java:39) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:662)
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