java.lang.ClassNotFoundException:com.sun.faces.config.ConfigureListener

Question

我们是三个人开发JSF项目,我们之前没有进入过JSF.奇怪的是,从SVN检出相同的数据后,其中一个团队成员每次使用Tomcat 7.0.27都会收到404错误.

在Tomcat(在Eclipse中使用)启动时,会写出以下日志:

01.06.2012 11:45:16 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: ......
01.06.2012 11:45:16 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:SnapManCloud' did not find a matching property.
01.06.2012 11:45:16 org.apache.coyote.AbstractProtocolHandler init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
01.06.2012 11:45:16 org.apache.coyote.AbstractProtocolHandler init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
01.06.2012 11:45:16 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 677 ms
01.06.2012 11:45:16 org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
01.06.2012 11:45:16 org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.12
01.06.2012 11:45:17 org.apache.catalina.core.StandardContext listenerStart
FATAL: Error configuring application listener of class com.sun.faces.config.ConfigureListener
java.lang.ClassNotFoundException: com.sun.faces.config.ConfigureListener
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4638)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5204)
    at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5199)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
01.06.2012 11:45:17 org.apache.catalina.core.StandardContext listenerStart
FATAL: Skipped installing application listeners due to previous error(s)
01.06.2012 11:45:17 org.apache.catalina.core.StandardContext startInternal
FATAL: Error listenerStart
01.06.2012 11:45:17 org.apache.catalina.core.StandardContext startInternal
FATAL: Context [/SnapManCloud] startup failed due to previous errors
01.06.2012 11:45:17 org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["http-bio-8080"]
01.06.2012 11:45:17 org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
01.06.2012 11:45:17 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1279 ms

我们使用Mojarra 2.0.3作为JSF实现,Eclipse已将其包含在项目中(可能是在类路径中).

事实上,有一个条目com.sun.faces.config.ConfigureListener中web.xml

<listener>
     <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>

有没有人有任何寻找错误的起点？此外,如果需要其他信息,请告知我们.

Answer 1

JSF通常捆绑在完整的Java EE应用服务器中,例如GlassFish,JBoss AS/EAP,WildFly,WebSphere,WebLogic等.但是,Tomcat是一个简单的JSP/Servlet容器,它只捆绑了JSP和Servlet API,没有JSF API .

如果您想在Tomcat上使用JSF,那么您需要将JSF库与webapp一起捆绑在其/WEB-INF/lib文件夹中,或者通过将JSF库放在其/lib文件夹中来在Tomcat中安装JSF .显然,该应用程序是为真正的Java EE应用程序服务器而设计的,因此不会捆绑JSF库/WEB-INF/lib.

有两个JSF实现,Mojarra和MyFaces.该com.sun.faces软件包指示Mojarra,因此请下载该软件并将其放在webapp的运行时类路径中(即在webapp /WEB-INF/lib或Tomcat中/lib).

另一个可能的原因是您将项目部署到使用MyFaces而不是Mojarra的Java EE应用程序服务器,而该项目显然是最初为Mojarra开发的.那个听众就是莫哈拉特定的.在这种情况下,您最好<listener>从中删除整个条目web.xml.

在任何情况下,钻嘴鱼科的的明确登记ConfigureListener在web.xml实际上只需要要解决老马车服务器,如GlassFish的第三版和Jetty谁没有找到钻嘴鱼科的TLD文件中的监听器.当部署到体面的服务器时,整个<listener>条目是不必要的.

也可以看看:

• 配置com.sun.faces.config.ConfigureListener
• 使用MyFaces与WASCE/Geronimo时的java.lang.ClassNotFoundException:com.sun.faces.config.ConfigureListener