我无法看到任何JSF组件。它显示了一个运行时异常：
SEVERE: Error Rendering View[/account/login.xhtml]
java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy84.markResourceRendered(Unknown Source)
at org.richfaces.resource.ResourceFactoryImpl.createMappedResource(ResourceFactoryImpl.java:366)
at org.richfaces.resource.ResourceFactoryImpl.createResource(ResourceFactoryImpl.java:343)
at org.richfaces.resource.ResourceHandlerImpl.createResource(ResourceHandlerImpl.java:270)
at org.richfaces.resource.ResourceHandlerImpl.createResource(ResourceHandlerImpl.java:280)
at com.sun.faces.renderkit.html_basic.ScriptRenderer.encodeEnd(ScriptRenderer.java:98)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:879)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1670)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1666)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1666)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:389)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269)
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 javax.faces.webapp.FacesServlet.service(FacesServlet.java:335)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.richfaces.services.ServiceTracker$1.invoke(ServiceTracker.java:153)
... 39 more
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/catalina/loader/StandardClassLoader) previously initiated loading for a different type with name "javax/faces/context/FacesContext"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.apache.myfaces.shared.renderkit.html.util.ResourceUtils.getRenderedScriptResources(ResourceUtils.java:104)
at org.apache.myfaces.shared.renderkit.html.util.ResourceUtils.markScriptAsRendered(ResourceUtils.java:116)
at org.richfaces.resource.external.ResourceTrackerForMyFaces.markResourceRendered(ResourceTrackerForMyFaces.java:71)
at org.richfaces.resource.external.ResourceTrackerImpl.markResourceRendered(ResourceTrackerImpl.java:60)
... 44 more
Nov 03, 2014 10:12:25 AM com.capexil.web.controller.exception.CapexilExceptionHandler handle
SEVERE: System Error
java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy84.markResourceRendered(Unknown Source)
at org.richfaces.resource.ResourceFactoryImpl.createMappedResource(ResourceFactoryImpl.java:366)
at org.richfaces.resource.ResourceFactoryImpl.createResource(ResourceFactoryImpl.java:343)
at org.richfaces.resource.ResourceHandlerImpl.createResource(ResourceHandlerImpl.java:270)
at org.richfaces.resource.ResourceHandlerImpl.createResource(ResourceHandlerImpl.java:280)
at com.sun.faces.renderkit.html_basic.ScriptRenderer.encodeEnd(ScriptRenderer.java:98)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:879)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1670)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1666)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1666)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:389)
我的web.xml是：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>my-work</display-name>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<welcome-file-list>
<welcome-file>account/login.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.allowTextChildren</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Production</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.defaultResourceMaxAge</param-name>
<param-value>86400000</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.sendPoweredByHeader</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_VIEW_MAPPINGS</param-name>
<param-value>*.xhtml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.enableControlSkinning</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.skin</param-name>
<param-value>plain</param-value>
</context-param>
<context-param>
<param-name>org.richfaces.clientSideStyle</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.defaultResourceMaxAge</param-name>
<param-value>2592000000</param-value>
</context-param>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
<mime-mapping>
<extension>less</extension>
<mime-type>text/css</mime-type>
</mime-mapping>
<mime-mapping>
<extension>woff</extension>
<mime-type>application/x-font-woff</mime-type>
</mime-mapping>
<mime-mapping>
<extension>tff</extension>
<mime-type>application/x-font-ttf</mime-type>
</mime-mapping>
<mime-mapping>
<extension>svg</extension>
<mime-type>image/svg+xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>eot</extension>
<mime-type>application/vnd.ms-fontobject</mime-type>
</mime-mapping>
<mime-mapping>
<extension>otf</extension>
<mime-type>font/opentype</mime-type>
</mime-mapping>
</web-app>
我无法确定可能出现的问题。我正在使用Tomcat-EE（Tomee）1.7.1。 在这方面，我将不胜感激。提前谢谢。
答案 0 :(得分：0)
谢谢大家，是的，这是重复库的情况 - 当我从可能导致冲突的资源中移除库'org.richfaces'时它起作用，因此异常。
谢谢！