Java 从JSF NullPointerException启动小程序

当我在jsf页面中运行小程序时，我正在使用myfaces和trinidad组件，在加载小程序时，日志会显示：

SEVERE: Servlet.service() for servlet faces threw exception
java.lang.NullPointerException
        at org.apache.myfaces.trinidadinternal.ui.RootRenderingContext.getRendererManager(RootRenderingContext.java:193)
        at org.apache.myfaces.trinidadinternal.uinode.UIXComponentUINode.getRenderer(UIXComponentUINode.java:379)
        at org.apache.myfaces.trinidadinternal.uinode.UIXComponentUINode.renderInternal(UIXComponentUINode.java:166)
        at org.apache.myfaces.trinidadinternal.uinode.UINodeRendererBase.encodeEnd(UINodeRendererBase.java:70)
        at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:913)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:672)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:668)
        at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:606)
        at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:623)
        at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.renderContent(PanelPartialRootRenderer.java:70)
        at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.renderContent(BodyRenderer.java:154)
        at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.encodeAll(PanelPartialRootRenderer.java:153)
        at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.encodeAll(BodyRenderer.java:81)
        at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:493)
        at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:913)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:672)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:668)
        at org.apache.myfaces.shared_impl.view.JspViewDeclarationLanguageBase.actuallyRenderView(JspViewDeclarationLanguageBase.java:355)
        at org.apache.myfaces.shared_impl.view.JspViewDeclarationLanguageBase.renderView(JspViewDeclarationLanguageBase.java:194)
        at org.apache.myfaces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:281)
        at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:59)
        at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:165)
        at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:85)
        at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:239)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:191)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:293)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:199)
        at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown Source)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown Source)
        at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
        at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
        at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
        at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source)
        at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
        at org.apache.catalina.connector.CoyoteAdapter.service(Unknown Source)
        at org.apache.coyote.http11.Http11Processor.process(Unknown Source)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Unknown Source)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(Unknown Source)
        at java.lang.Thread.run(Thread.java:662)

小程序工作正常，但为什么会出现这种异常

我用下面的代码启动小程序，我还使用了f:verbatin，而不是带有escape的tr:output

<%@page contentType="text/html"%>
<%@page pageEncoding="ISO-8859-15" %>

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@taglib uri="http://myfaces.apache.org/trinidad" prefix="tr"%>
<%@taglib uri="http://myfaces.apache.org/trinidad/html" prefix="trh"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">
<f:view>
    <f:loadBundle basename="es.atc.planem.resources.general" var="general"/>
    <c:import url="/contents/head.jsp"/>
    <trh:body id="body">
        <tr:form id="general">
            <tr:panelPage>
               <tr:panelGroupLayout layout="vertical">
                    <tr:outputText escape="false" value="<applet  mayscript code=\"org.jdesktop.applet.util.JNLPAppletLauncher\"
                                   codebase=\"#{general['visor.ruta']}\"
                                   width=#{general['visor.width']}
                                   height=#{general['visor.height']}
                                   archive=\"jars/applet-launcher.jar,jars/jogl.jar, 
                                   jars/gluegen-rt.jar,
                                   jars/swing-worker-1.1.jar,
                                   jars/swingx-beaninfo-1.6.2.jar,
                                   jars/swingx-core-1.6.2.jar,
                                   jars/appframework-1.0.3.jar,
                                   jars/mail.jar,
                                   jars/postgis-2.0.0SVN.jar,
                                   jars/postgis_pljava.jar,
                                   jars/postgresql-9.0-801.jdbc4.jar, 
                                   jars/xSocket-2.8.15.jar,
                                   jars/worldwind.jar,
                                   jars/Plan-EM_Applet.jar\">
                                   <param name=\"jnlp_href\" value=\"visor.jnlp\"> 
                                   <param name=\"subapplet.classname\" value=\"WWJApplet\">
                                   <param name=\"subapplet.displayname\" value=\"WWJ Applet\">
                                   <param name=\"noddraw.check\" value=\"true\">
                                   <param name=\"progressbar\" value=\"true\">
                                   <param name=\"progressbar\" value=\"true\">
                                   <param name=\"jnlpNumExtensions\" value=\"1\">
                                   <param name=\"jnlpExtension1\"
                                   value=\"#{general['visor.ruta']}/jogl.jnlp\"></applet>" id="_applet"/>
                    <tr:spacer height="10px"/>
                    <tr:commandButton id="btnCancelar" actionListener="#{bBean.cerrarVisor}"
                                      styleClass="small" 
                                      text="#{general['boton.texto.cerrar']}"/>
                </tr:panelGroupLayout>
            </tr:panelPage>
        </tr:form>
    </trh:body>
</f:view>

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谢谢

有什么想法吗？1不包括“谢谢”之类的噪音。2.形成一个具体问题。3对输入/输出以及代码使用代码格式。为此，选择文本并单击邮件发布/编辑表单上方的{}按钮欢迎来到苏这是一个基于Swing的小程序，即JApplet吗？未在EDT上构造/更新Swing组件可能会导致NPE。因此，如果从页面中删除小程序标记，异常会消失吗？显示如何在页面中嵌入小程序。是的，小程序基于swing组件，当我从页面中删除小程序时，异常消失。。。