我正在开发一个 JSF Web 应用程序。我将 JSF 2.2 与 Apache Tomcat 8.0.27.0 结合使用。
当我按 clean & build 时，它工作正常，但是当我尝试运行我的应用程序时，我收到此异常：
com.sun.faces.config.ConfigurationException: java.util.concurrent.ExecutionException: com.sun.faces.config.ConfigurationException: Unable to parse document 'file:/C:/Users/axeli/Desktop/SeminarioPagina/build/web/WEB-INF/faces-config.xml': null
28-Feb-2016 18:00:19.275 INFO [http-nio-8084-exec-10] org.apache.catalina.util.LifecycleBase.stop The stop() method was called on component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]] after stop() had already been called. The second call will be ignored.
28-Feb-2016 18:00:19.777 INFO [http-nio-8084-exec-10] org.apache.catalina.startup.HostConfig.undeploy Repliegue (undeploy) de la aplicación web que tiene como trayectoria de contexto
28-Feb-2016 18:00:19.878 INFO [http-nio-8084-exec-10] org.apache.catalina.startup.HostConfig.deployDescriptor Desplieque del descriptor de configuración C:\Users\axeli\AppData\Roaming\NetBeans\8.1\apache-tomcat-8.0.27.0_base\conf\Catalina\localhost\ROOT.xml
28-Feb-2016 18:00:19.878 WARNING [http-nio-8084-exec-10] org.apache.catalina.startup.SetContextPropertiesRule.begin [SetContextPropertiesRule]{Context} Setting property 'antiJARLocking' to 'true' did not find a matching property.
28-Feb-2016 18:00:20.826 INFO [http-nio-8084-exec-10] org.apache.jasper.servlet.TldScanner.scanJars Al menos un JAR, que se ha explorado buscando TLDs, aún no contenía TLDs. Activar historial de depuración para este historiador para una completa lista de los JARs que fueron explorados y de los que nos se halló TLDs. Saltarse JARs no necesarios durante la exploración puede dar lugar a una mejora de tiempo significativa en el arranque y compilación de JSP .
28-Feb-2016 18:00:20.948 INFO [http-nio-8084-exec-10] com.sun.faces.config.ConfigureListener.contextInitialized Inicializando Mojarra 2.2.7 ( 20140610-1547 https://svn.java.net/svn/mojarra~svn/tags/2.2.7@13362) para el contexto ''
28-Feb-2016 18:00:21.079 SEVERE [http-nio-8084-exec-10] com.sun.faces.config.ConfigureListener.contextInitialized Critical error during deployment:
com.sun.faces.config.ConfigurationException: java.util.concurrent.ExecutionException: com.sun.faces.config.ConfigurationException: Unable to parse document 'file:/C:/Users/axeli/Desktop/SeminarioPagina/build/web/WEB-INF/faces-config.xml': null
at com.sun.faces.config.ConfigManager.getConfigDocuments(ConfigManager.java:761)
at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:349)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:221)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4736)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5181)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:586)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:460)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1586)
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1460)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:906)
at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:344)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: com.sun.faces.config.ConfigurationException: Unable to parse document 'file:/C:/Users/axeli/Desktop/SeminarioPagina/build/web/WEB-INF/faces-config.xml': null
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at com.sun.faces.config.ConfigManager.getConfigDocuments(ConfigManager.java:759)
... 49 more
Caused by: com.sun.faces.config.ConfigurationException: Unable to parse document 'file:/C:/Users/axeli/Desktop/SeminarioPagina/build/web/WEB-INF/faces-config.xml': null
at com.sun.faces.config.ConfigManager$ParseTask.call(ConfigManager.java:1012)
at com.sun.faces.config.ConfigManager$ParseTask.call(ConfigManager.java:954)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.sun.faces.config.ConfigManager.getConfigDocuments(ConfigManager.java:747)
... 49 more
Caused by: java.lang.NullPointerException
at com.sun.faces.config.ConfigManager$ParseTask.getDocument(ConfigManager.java:1172)
at com.sun.faces.config.ConfigManager$ParseTask.call(ConfigManager.java:1003)
... 52 more
28-Feb-2016 18:00:21.195 SEVERE [http-nio-8084-exec-10] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
28-Feb-2016 18:00:21.195 SEVERE [http-nio-8084-exec-10] org.apache.catalina.core.StandardContext.startInternal Falló en arranque del Contexto [] debido a errores previos
28-Feb-2016 18:00:21.227 SEVERE [http-nio-8084-exec-10] javax.faces.FactoryFinder$FactoryManager.copyInjectionProviderFromFacesContext Unable to obtain InjectionProvider from init time FacesContext. Does this container implement the Mojarra Injection SPI?
28-Feb-2016 18:00:21.227 SEVERE [http-nio-8084-exec-10] javax.faces.FactoryFinder$FactoryManager.getFactory La aplicación no se ha inicializado correctamente durante el inicio, no se encuentra la fábrica: javax.faces.application.ApplicationFactory. Attempting to find backup.
28-Feb-2016 18:00:21.227 SEVERE [http-nio-8084-exec-10] com.sun.faces.config.ConfigureListener.contextDestroyed Unexpected exception when attempting to tear down the Mojarra runtime
java.lang.IllegalStateException: Could not find backup for factory javax.faces.application.ApplicationFactory.
at javax.faces.FactoryFinder$FactoryManager.getFactory(FactoryFinder.java:1135)
at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:379)
at com.sun.faces.config.InitFacesContext.getApplication(InitFacesContext.java:142)
at com.sun.faces.config.ConfigureListener.contextDestroyed(ConfigureListener.java:319)
at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4783)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5404)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:160)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:586)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:460)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1586)
at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1460)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:906)
at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:344)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
28-Feb-2016 18:00:21.358 SEVERE [http-nio-8084-exec-10] javax.faces.FactoryFinder.releaseFactories Unable to call @PreDestroy annotated methods because no InjectionProvider can be found. Does this container implement the Mojarra Injection SPI?
28-Feb-2016 18:00:21.390 INFO [http-nio-8084-exec-10] org.apache.catalina.startup.HostConfig.deployDescriptor Deployment of configuration descriptor C:\Users\axeli\AppData\Roaming\NetBeans\8.1\apache-tomcat-8.0.27.0_base\conf\Catalina\localhost\ROOT.xml has finished in 1.512 ms
这些是我现在正在使用的库：
com.sun.faces.config.ConfigManager$ParseTask.getDocument(ConfigManager.java:1172) 处的 java.lang.NullPointerException
这通常仅在 XML 语法错误时发生faces-config.xml本身和 XML 解析器（错误地）没有抛出异常，只是返回null。请仔细注意文档的 XML 格式良好性。 IE。每一个<element>必须有一个匹配的</element>和每一个"必须有一个匹配的", etc.
如果您使用 IDE，请确保它具有必要的 JSF/Java EE 插件，这些插件通常负责 XML 验证。或者，如果您已经有，请注意 IDE 中的错误/警告。如果您不确定，请复制粘贴faces-config.xml在一些在线 XML 验证工具 http://google.com/search?q=online%20xml%20validator， 例如http://www.xmlvalidation.com http://www.xmlvalidation.com.
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