Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/jetty/server/SessionManager

at com.jfinal.core.JFinal.start(JFinal.java:170)

at com.apiton.sys.run.Run.main(Run.java:17)

Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.server.SessionManager

at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 2 more

这个是我没有导入jetty的依赖吗