JFinal-BBS 运行就报错，请帮忙解决一下?报错

@JFinal 你好，想跟你请教个问题：都有些不好意思问这么简单的问题了，主要还是基础不够

在改动jfinalbbs时一运行就报这些错，找不到原因，主要是对jfinal还不够熟悉，网上说导包我也导了，可一运行还是报错

警告: FAILED Jfinal: java.lang.IllegalStateException: class cn.zeny.bss.BSSConfig is not a javax.servlet.Filter
java.lang.IllegalStateException: class cn.zeny.bss.BSSConfig is not a javax.servlet.Filter
at org.eclipse.jetty.servlet.FilterHolder.doStart(FilterHolder.java:98)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:724)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:265)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:706)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:492)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:277)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at com.jfinal.server.JettyServer.doStart(JettyServer.java:117)
at com.jfinal.server.JettyServer.start(JettyServer.java:64)
at com.jfinal.core.JFinal.start(JFinal.java:165)
at cn.zeny.bss.BSSConfig.main(BSSConfig.java:87)


十一月 12, 2014 11:01:15 上午 org.eclipse.jetty.webapp.WebAppContext doStart
警告: Failed startup of context o.e.j.w.WebAppContext{/,file:/F:/eclipse/bss/WebRoot/}
java.lang.IllegalStateException: class cn.zeny.bss.BSSConfig is not a javax.servlet.Filter
at org.eclipse.jetty.servlet.FilterHolder.doStart(FilterHolder.java:98)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:724)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:265)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:706)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:492)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:277)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at com.jfinal.server.JettyServer.doStart(JettyServer.java:117)
at com.jfinal.server.JettyServer.start(JettyServer.java:64)
at com.jfinal.core.JFinal.start(JFinal.java:165)
at cn.zeny.bss.BSSConfig.main(BSSConfig.java:87)


十一月 12, 2014 11:01:15 上午 org.eclipse.jetty.server.AbstractConnector doStart
信息: Started SelectChannelConnector@0.0.0.0:80
Starting Complete. Welcome To The JFinal World :)