main.java

mina是以Java实现的一个开源的网络程序框架

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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.mina.example.tapedeck;

import java.net.InetSocketAddress;

import org.apache.mina.core.filterchain.IoFilter;
import org.apache.mina.core.service.IoHandler;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineEncoder;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.statemachine.StateMachine;
import org.apache.mina.statemachine.StateMachineFactory;
import org.apache.mina.statemachine.StateMachineProxyBuilder;
import org.apache.mina.statemachine.annotation.IoFilterTransition;
import org.apache.mina.statemachine.annotation.IoHandlerTransition;
import org.apache.mina.statemachine.context.IoSessionStateContextLookup;
import org.apache.mina.statemachine.context.StateContext;
import org.apache.mina.statemachine.context.StateContextFactory;
import org.apache.mina.transport.socket.SocketAcceptor;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;

/**
 * Simple example demonstrating how to build a state machine for MINA's 
 * {@link IoHandler} interface.
 *
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (Thu, 26 Jun 2008) $
 */
public class Main {
    /** Choose your favorite port number. */
    private static final int PORT = 12345;
    
    private static IoHandler createIoHandler() {
        StateMachine sm = StateMachineFactory.getInstance(
                IoHandlerTransition.class).create(TapeDeckServer.EMPTY,
                new TapeDeckServer());

        return new StateMachineProxyBuilder().setStateContextLookup(
                new IoSessionStateContextLookup(new StateContextFactory() {
                    public StateContext create() {
                        return new TapeDeckServer.TapeDeckContext();
                    }
                })).create(IoHandler.class, sm);
    }
    
    private static IoFilter createAuthenticationIoFilter() {
        StateMachine sm = StateMachineFactory.getInstance(
                IoFilterTransition.class).create(AuthenticationHandler.START,
                new AuthenticationHandler());

        return new StateMachineProxyBuilder().setStateContextLookup(
                new IoSessionStateContextLookup(new StateContextFactory() {
                    public StateContext create() {
                        return new AuthenticationHandler.AuthenticationContext();
                    }
                }, "authContext")).setIgnoreUnhandledEvents(true).setIgnoreStateContextLookupFailure(true).create(
                IoFilter.class, sm);
    }
    
    public static void main(String[] args) throws Exception {
        SocketAcceptor acceptor = new NioSocketAcceptor();
        acceptor.setReuseAddress(true);
        ProtocolCodecFilter pcf = new ProtocolCodecFilter(
                new TextLineEncoder(), new CommandDecoder());
        acceptor.getFilterChain().addLast("log1", new LoggingFilter("log1"));
        acceptor.getFilterChain().addLast("codec", pcf);
//        acceptor.getFilterChain().addLast("authentication", createAuthenticationIoFilter());
        acceptor.getFilterChain().addLast("log2", new LoggingFilter("log2"));
        acceptor.setHandler(createIoHandler());
        acceptor.bind(new InetSocketAddress(PORT));
    }
}