import java.io.IOException;
import java.net.InetSocketAddress;

import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;

/**
 * 使用mina作为服务器进行socket通讯
 * 
 * 需要jar包: mina-core-2.0.16.jar, slf4j-api-1.7.21.jar
 * jar包下载地址 : http://mina.apache.org/downloads-mina.html 
 *
 */
public class MinaServer {
    public static void main(String[] args) {
        try {
            // 4步操作
            // 1.新建 NioSocketAcceptor 事例对象
            NioSocketAcceptor acceptor = new NioSocketAcceptor();
            // 2.设置消息处理对象
            acceptor.setHandler(new MyServerHandler());
            // 3.设置消息解码器
            acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory()));
            // acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 3);
            // //设置idle时长
            // 4.绑定端口开启服务
            acceptor.bind(new InetSocketAddress(9999));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

/**
 * 专门处理消息的类,实现网络连接和消息处理的解耦
 */
class MyServerHandler extends IoHandlerAdapter {

    /** 异常时候的处理 */
    @Override
    public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
        System.out.println("exceptionCaught");
    }

    /** 收到消息 */
    @Override
    public void messageReceived(IoSession session, Object message) throws Exception {
        System.out.println("messageReceived " + message);
        // session.write("reply " + message); //收到消息就马上把消息回送给客户端
    }

    /** 发送消息 */
    @Override
    public void messageSent(IoSession session, Object message) throws Exception {
        System.out.println("messageSent " + message);
    }

    /** 通讯闲置时候的处理 */
    @Override
    public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
        System.out.println("sessionIdle");
    }
}