java.lang.NoClassDefFoundError: javax/faces/FacesException



我正在尝试部署我从Eclipse工作区导入到NetBeans的web应用程序。但是它没有被部署,相反,它给了我下面的异常。

15 Jul, 2011 5:59:04 AM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.apache.myfaces.component.html.util.StreamingDestroyerListener
java.lang.NoClassDefFoundError: javax/faces/FacesException
        at org.apache.myfaces.shared_tomahawk.config.MyfacesConfig.<clinit>(MyfacesConfig.java:80)
        at org.apache.myfaces.component.html.util.StreamingDestroyerListener.contextInitialized(StreamingDestroyerListener.java:32)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
        at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        **at java.lang.reflect.Method.invoke(Method.java:597)**
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
        **at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761)**
        at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500)
        at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849)
        at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351)
        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.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
        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.Http11AprProcessor.process(Http11AprProcessor.java:859)
        at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
        at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
        **at java.lang.Thread.run(Thread.java:619)**

我错过了一些罐子吗?

NoClassDefFoundError表示类在编译时出现在类路径中。战斧在代码库中有一个import javax.faces.FacesException;行。这是核心JSF API的一个类。

这意味着JSF库在web应用的类路径中丢失了。这个项目显然是在Netbeans中与一个已经与JSF捆绑在一起的服务器相关联的,比如Glassfish、JBoss as等。Eclipse中的项目似乎没有正确地与服务器关联,或者有问题的服务器没有捆绑JSF,如Tomcat、Jetty等。

stacktrace提示您正在使用Tomcat。您需要单独下载JSF,并将JAR文件放到webapp的/WEB-INF/lib中(您的Tomahawk库也在那里)。

是的,CNF异常总是意味着丢失jar。类装入器找不到

javax.faces.FacesException

你通过剪掉&将类名粘贴到findjar.com中,如下所示:

http://www.findjar.com/index.x?query=javax.faces.FacesException

添加一个不同的体验:当我遇到这个问题时,这是因为我正在使用ICEFaces并且在Tomcat的$CATALINA_BASE/lib目录中包含了ICEFaces jar,但在我的webapp的/WEB-INF/lib目录中包含了javax.faces.jar。我的解决方案是将javax.faces.jar/WEB-INF/lib移动到$CATALINA_BASE/lib。另外,如果你使用的是ICEFaces

,请确保你使用的是正确的javax.faces.jar版本。

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