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我有一个简短的问题。我想用Apache Vysper. 但是当我尝试创建服务器时:

XMPPServer server = new XMPPServer("myserver.com");

ClassNotFoundException尽管该类已正确导入,但我在这条线上得到了一个。

有人可以帮帮我吗?

谢谢 :)

这里的例外:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/vysper/xmpp/server/XMPPServer
    at de.seba.vyspertest.App.main(App.java:13)
Caused by: java.lang.ClassNotFoundException: org.apache.vysper.xmpp.server.XMPPServer
    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
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