用RMI写了 聊天 小软件 怎么报这种错误啊？？？

Question

Exception in thread "main" java.rmi.server.ExportException: remote object implements illegal remote interface; nested exception is: 
java.lang.IllegalArgumentException: illegal remote method encountered: public abstract void ChatterServer.ChatterServer.chat(java.lang.String,java.lang.String)
at sun.rmi.server.UnicastServerRef.exportObject(Unknown Source)
at java.rmi.server.UnicastRemoteObject.exportObject(Unknown Source)
at java.rmi.server.UnicastRemoteObject.exportObject(Unknown Source)
at java.rmi.server.UnicastRemoteObject.<init>(Unknown Source)
at java.rmi.server.UnicastRemoteObject.<init>(Unknown Source)
at ChatterServer.ChatterServerImpl.<init>(ChatterServerImpl.java:22)
at ChatterServer.ChatterServerImpl.getInstance(ChatterServerImpl.java:33)
at ChatterServer.ServerFrame.<init>(ServerFrame.java:23)
at ChatterServer.ServerFrame.main(ServerFrame.java:30)
Caused by: java.lang.IllegalArgumentException: illegal remote method encountered: public abstract void ChatterServer.ChatterServer.chat(java.lang.String,java.lang.String)
at sun.rmi.server.Util.checkMethod(Unknown Source)
at sun.rmi.server.Util.getRemoteInterfaces(Unknown Source)
at sun.rmi.server.Util.getRemoteInterfaces(Unknown Source)
at sun.rmi.server.Util.createProxy(Unknown Source)
... 9 more

Answer 1

make sure you throw RemoteException in all methods that you expose.
http://www.coderanch.com/t/189384/Developer-Certification-SCJD/certification/RMI-client-failure
http://bach.yo2.cn/articles/%E8%AF%95%E7%94%A8rmi-plugin-for-eclipse.html

Answer 2

1楼说的很对啦，必须加上remoteexception

Answer 3

http://www.netjc.com.cn/html/200711/156235.html