org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 根本原因。 java.lang.ClassLoader.loadClass(ClassLoader.java:357) java.lang.ClassLoader ...

java classname this is essential stuff. if windows is letting you get by without fixing up your classpath, that's nice, but you aren't going to get very far as a java developer without understanding ...