当我从NetBeans执行它时，此应用程序正常工作（NetBeans中的项目配置为使用localhost中的tomcat 6来部署它）。当我尝试在另一个tomcat中部署战争时会出现问题。
尝试使用tomcat管理器在tomcat 6.0.18中部署war时，出现以下错误：
30-may-2013 16:19:48 org.apache.catalina.core.StandardContext start
GRAVE: Error listenerStart
这太宽泛了，所以我搜索了如何获得更具体的错误，在将logging.properties添加到WEB-INF之后，我得到了这个堆栈跟踪：
com.sun.faces.config.ConfigurationException: CONFIGURATION FAILED! org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory
at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:213)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:196)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342)
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:525)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:830)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:515)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1231)
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:1471)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:243)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
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.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:525)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.InstantiationException: org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at javax.faces.FactoryFinder.getImplGivenPreviousImpl(FactoryFinder.java:537)
at javax.faces.FactoryFinder.getImplementationInstance(FactoryFinder.java:405)
at javax.faces.FactoryFinder.access$400(FactoryFinder.java:135)
at javax.faces.FactoryFinder$FactoryManager.getFactory(FactoryFinder.java:717)
at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:239)
at com.sun.faces.config.processor.FactoryConfigProcessor.verifyFactoriesExist(FactoryConfigProcessor.java:186)
at com.sun.faces.config.processor.FactoryConfigProcessor.process(FactoryConfigProcessor.java:131)
at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:203)
... 34 more
根本原因是java.lang.InstantiationException：org.apache.myfaces.webapp.filter.TomahawkFacesContextFactory。调用Class.newInstance()时抛出此异常。查看javadoc，这个异常的主要原因是“类对象表示一个抽象类，一个接口，一个数组类，一个基本类型，或者void”，“该类没有空的构造函数”。 TomahawkFacesContextFactory没有没有参数的构造函数，所以我认为这就是抛出异常的原因。这就是我被困住的地方，我不知道如何解决这个问题。
这是我的web.xml：
<?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>XXXX</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<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>/faces/*</url-pattern>
</servlet-mapping>
<servlet>
<description></description>
<display-name>servlet</display-name>
<servlet-name>servlet</servlet-name>
<servlet-class>servlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servlet</servlet-name>
<url-pattern>/servlet</url-pattern>
</servlet-mapping>
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>resources.application</param-value>
</context-param>
<context-param>
<description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<description>
This parameter tells MyFaces if javascript code should be allowed in
the rendered HTML output.
If javascript is allowed, command_link anchors will have javascript code
that submits the corresponding form.
If javascript is not allowed, the state saving info and nested parameters
will be added as url parameters.
Default is 'true'</description>
<param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<description>
If true, rendered HTML code will be formatted, so that it is 'human-readable'
i.e. additional line separators and whitespace will be written, that do not
influence the HTML code.
Default is 'true'</description>
<param-name>org.apache.myfaces.PRETTY_HTML</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<description>
If true, a javascript function will be rendered that is able to restore the
former vertical scroll on every request. Convenient feature if you have pages
with long lists and you do not want the browser page to always jump to the top
if you trigger a link or button action that stays on the same page.
Default is 'false'
</description>
<param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
<param-value>true</param-value>
</context-param>
<listener>
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>
</web-app>
tomcat正在RedHatEnterpriseServer 5.2上执行。 它使用Java 1.6.0_10。
图书馆版本：Myfaces（2.0.2）和Tomahawk（1.1.11）。
答案 0 :(得分：3)
图书馆版本：Myfaces（2.0.2）
然后com.sun.faces参与堆栈跟踪表明Mojarra实际上已被使用。如果您对webapp捆绑MyFaces绝对肯定，那么这只能意味着Mojarra安装在webapp的运行时类路径中的其他位置，该类路径具有与webapp提供的库相同或更高的类加载优先级，例如由{{1}标识的位置Tomcat的shared.loader。
您不能混合使用不同的JSF实现。清理其中一个。