JFinal Starting scanner at interval of 5 seconds.报错

Starting JFinal 2.0

Starting scanner at interval of 5 seconds.
Starting web server on port: 80
Exception in thread "main" java.lang.NoSuchMethodError: org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V
at org.eclipse.jetty.util.log.JettyAwareLogger.log(JettyAwareLogger.java:607)
at org.eclipse.jetty.util.log.JettyAwareLogger.warn(JettyAwareLogger.java:431)
at org.eclipse.jetty.util.log.Slf4jLog.warn(Slf4jLog.java:69)
at org.eclipse.jetty.util.component.AbstractLifeCycle.setFailed(AbstractLifeCycle.java:204)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:74)
at com.jfinal.server.JettyServer.doStart(JettyServer.java:121)
at com.jfinal.server.JettyServer.start(JettyServer.java:64)
at com.jfinal.core.JFinal.start(JFinal.java:137)

at com.hon.common.CommonConfig.main(CommonConfig.Java:76)

解决：去掉编译器自带的JavaEE。因为自带的JavaEE会与jetty冲突