maven jar包都下载完了，编译没报错。

Exception in thread "main" java.lang.NoClassDefFoundError: org/nutz/boot/NbApp
	at cn.buddy.demo.MainLauncher.main(MainLauncher.java:24)
Caused by: java.lang.ClassNotFoundException: org.nutz.boot.NbApp
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 1 more