我的Java非常生疏,我在这里有点头疼。Java JAR问题
这里是我的server.java:
import java.io.IOException;
import net.tootallnate.websocket.WebSocket;
import net.tootallnate.websocket.WebSocketServer;
public class server extends WebSocketServer
{
public server(int port)
{
super(port, Draft.AUTO);
}
public void onClientOpen(WebSocket conn)
{
System.out.println("onopen");
/*try
{
this.sendToAll(conn+" entered the room!");
}
catch(IOException ex)
{
ex.printStackTrace();
}*/
}
public void onClientClose(WebSocket conn)
{
System.out.println("onclose");
}
public void onClientMessage(WebSocket conn,String message)
{
System.out.println("onmessage"+message);
}
public static void main(String[] args)
{
int port = 8000;
try
{
port=Integer.parseInt(args[0]);
}
catch(Exception ex)
{
}
server s = new server(port);
s.start();
System.out.println("ChatServer started on port: "+s.getPort());
}
}
我需要包括一个jar文件:./Java-WebSocket/dist/WebSocket.jar(可从http://github.com/TooTallNate/Java-WebSocket/)
它编译OK:
prompt> javac -classpath ./Java-WebSocket/dist/WebSocket.jar server.java
然而,当我去跑:
prompt> java -classpath ./Java-WebSocket/dist/WebSocket.jar server
Exception in thread "main" java.lang.NoClassDefFoundError: server
Caused by: java.lang.ClassNotFoundException: server
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: server. Program will exit.
我希望有人可以提供帮助。
由于提前,
是否与.java文件位于同一目录下生成.class文件? – MikeTheReader 2010-08-11 20:18:10
只是FYI。按照惯例,所有Java类都以大写字符开头。所以你的公共类服务器应该是公共类Server {。 – CoolBeans 2010-08-11 20:19:19