NullPointerException异常在org.primefaces.component.chart.renderer.BarRenderer.encodeData

Question

我希望我的问题是类似this question可惜答案是不是为我工作。

<p:chart type="bar" model="#{lasDashboardBean.barModel}" style="height:350px">
                            <p:ajax event="itemSelect" listener="#{lasDashboardBean.itemSelect}"  update="machineInfoTable"  />
                        </p:chart>

las dashboard bean.Java

@Named(value = "lasDashboardBean")
@Dependent
public class LasDashboardBean {

private BarChartModel barModel;
private DashboardController dashboardDbController;

@PostConstruct
public void init() {
    try {
        dashboardDbController = new DashboardController();
    } catch (NamingException ex) {
        Logger.getLogger(LasDashboardBean.class.getName()).log(Level.SEVERE, null, ex);
    }
    createBarModel();

}
private void createBarModel() {
    barModel = initBarModel();
    barModel.setTitle("Machine Menufacturers Count");
    barModel.setLegendPosition("ne");

    Axis xAxis = barModel.getAxis(AxisType.X);
    xAxis.setTickAngle(90);

    Axis yAxis = barModel.getAxis(AxisType.Y);
    yAxis.setLabel("Count");
    yAxis.setMin(0);
}
private BarChartModel initBarModel() {
    BarChartModel model = new BarChartModel();
    ChartSeries manufacturersMachines = new ChartSeries();
    manufacturersMachines.setLabel("Machines");
    try {

        manufacturersMachineCount = dashboardDbController.getManufacturersMachinesCount();

        manufacturersMachineCount.stream().forEach((mc) -> {
            manufacturersMachines.set(mc.getManufacturerName(), mc.getCount());
        });

        model.addSeries(manufacturersMachines);

    } catch (SQLException ex) {
        Logger.getLogger(LasDashboardBean.class.getName()).log(Level.SEVERE, null, ex);
    }
    return model;

}

错误日志：

在显示java.lang.NullPointerException org.primefaces.component.chart.renderer.BarRenderer.encodeData（BarRenderer.java:35）在org.primefaces.component.chart.renderer.BasePlotRenderer.render（BasePlotRenderer.java:29）的组织。 primefaces.component.chart.ChartRenderer.encodeScript（ChartRenderer.java:95）在org.primefaces.component.chart.ChartRenderer.encodeEnd（ChartRenderer.java:68）在javax.faces.component.UIComponentBase.encodeEnd（UIComponentBase.java： 949）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1912）在org.primefaces.component.panelgrid.PanelGridRenderer.encodeGridBody（PanelGridRenderer.java:244）在org.primefaces.component.panelgrid.PanelGridRenderer.encodeGridLayout （PanelGridRenderer.java:90）在org.primefaces.component.panelgrid.PanelGridRenderer.encodeEnd（PanelGridRenderer.java:40）在javax.faces.component.UIComponentBase.encodeEnd（UIComponentBase.java:949）在javax.faces.component。 UIComponent.encodeAll（UIComponent.java:1912）在javax.faces.render.Renderer.encodeC承运（Renderer.java:176）在javax.faces.component.UIComponentBase.encodeChildren（UIComponentBase.java:918）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1905）在javax.faces.component.UIComponent .encodeAll（UIComponent.java:1908）在javax.faces.component.UIComponent.encodeAll（UIComponent.java:1908）在com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView（FaceletViewHandlingStrategy.java:491）在融为一体。 sun.faces.application.view.MultiViewHandler.renderView（MultiViewHandler.java:194）在javax.faces.application.ViewHandlerWrapper.renderView（ViewHandlerWrapper.java:151）在javax.faces.application.ViewHandlerWrapper.renderView（ViewHandlerWrapper.java： 151）在com.sun.faces.lifecycle.RenderResponsePhase.execute（RenderResponsePhase.java:126）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:100）在com.sun.faces.lifecycle.LifecycleImpl .render（LifecycleImpl.java:223）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:671）在org.apache.catalina.core.S tandardWrapper.service（StandardWrapper.java:1580）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:338）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:208）在组织.apache.shiro.web.servlet.ProxiedFilterChain.doFilter（ProxiedFilterChain.java:61）在org.apache.shiro.web.servlet.AdviceFilter.executeChain（AdviceFilter.java:108）在org.apache.shiro.web.servlet .AdviceFilter.doFilterInternal（AdviceFilter.java:137）在org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:125）在org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter（ProxiedFilterChain.java ：66）在org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain（AbstractShiroFilter.java:449）在org.apache.shiro.web.servlet.AbstractShiroFilter $ 1.call（AbstractShiroFilter.java:365）在org.apache .shiro.subject.support.SubjectCallable.doCall（SubjectCallable.java:90）在org.apache.shiro.subject.support.SubjectCallable.c所有（SubjectCallable.java:83）在org.apache.shiro.subject.support.DelegatingSubject.execute（DelegatingSubject.java:383）在org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal（AbstractShiroFilter.java:362）在org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:125）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:250）在org.apache.catalina.core.ApplicationFilterChain .doFilter（ApplicationFilterChain.java:208）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:256）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:160）在有机apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:652）在org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:591）在com.sun.enterprise.web.WebPipeline.invoke（WebPipeline。的java：99）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:155）在org.apache。 catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:371）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:238）在com.sun.enterprise.v3.services.impl.ContainerMapper $ HttpHandlerCallable。调用（ContainerMapper.java:463）在com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:168）在org.glassfish.grizzly.http.server.HttpHandler.runService（HttpHandler.java： 206）在org.glassfish.grizzly.http.server.HttpHandler.doHandle（HttpHandler.java:180）在org.glassfish.grizzly.http.server.HttpServerFilter.handleRead（HttpServerFilter.java:242）在org.glassfish.grizzly .filterchain.ExecutorResolver $ 9.execute（ExecutorResolver.java:119）在org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter（DefaultFilterChain.java:284）在org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart（DefaultFilterChain.java： 201）在org.glassfish.grizzly.filterchain.DefaultFilterChain.execute（DefaultFilterChain.java:133）在org.glassfish.gri zzly.filterchain.DefaultFilterChain.process（DefaultFilterChain.java:112）在org.glassfish.grizzly.ProcessorExecutor.execute（ProcessorExecutor.java:77）在org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent（TCPNIOTransport.java： 539）在org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent（AbstractIOStrategy.java:112）在org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0（WorkerThreadIOStrategy.java:117）在org.glassfish.grizzly.strategies.WorkerThreadIOStrategy 。访问$ 100（WorkerThreadIOStrategy.java:56）在org.glassfish.grizzly.strategies.WorkerThreadIOStrategy $ WorkerThreadRunnable.run（WorkerThreadIOStrategy.java:137）在org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java： 593）在org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:573）在java.lang.Thread.run（Thread.java:748）

Answer 1

我曾在Glassfish Server面临着同样的问题。更换服务器后，问题就解决了。