apache mina 学习笔记二（HelloWorld)

官网上有一个发送时间的服务类作为入门的例子

http://mina.apache.org/mina-project/quick-start-guide.html

 

我们需要的两个jar都可以从下载的压缩包中找到

mina-core-2.0.7.jar

slf4j-api-1.6.6.jar

 

服务器代码分为两个类，一个启动服务的类MinaTimeServer.java，另外一个是处理请求的类TimeServerHandler.java

直接上代码吧。

package cn.tang.test;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.charset.Charset;

import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;

public class MinaTimeServer {
	private static final int PORT=9123;

	public static void main(String[] args) throws IOException {
		IoAcceptor acceptor = new NioSocketAcceptor();
		acceptor.getFilterChain().addLast("logger", new LoggingFilter());
		acceptor.getFilterChain().addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(Charset.forName("UTF-8"))));
		
		acceptor.setHandler(new TimeServerHandler());
		acceptor.getSessionConfig().setReadBufferSize(2048);
		acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);
		
		acceptor.bind(new InetSocketAddress(PORT));
	}

}

 

为了理解请求过来Session的创建和销毁时机，比官网的多些了一些方法。

package cn.tang.test;

import java.util.Date;

import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;

public class TimeServerHandler extends IoHandlerAdapter {
	@Override
	public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
		cause.printStackTrace();
	}

	@Override
	public void messageReceived(IoSession session, Object message) throws Exception {
		String str = message.toString();
		if (str.trim().equalsIgnoreCase("quit")) {
			session.close();
			return;
		}

		Date date = new Date();
		session.write(date.toString());
		System.out.println("Message written...");
	}

	@Override
	public void sessionCreated(IoSession session) throws Exception {
		System.out.println("sessionCreated...");
	}

	@Override
	public void sessionOpened(IoSession session) throws Exception {
		System.out.println("sessionOpened...");
	}

	@Override
	public void sessionClosed(IoSession session) throws Exception {
		System.out.println("sessionClosed...");
	}

	@Override
	public void sessionIdle(IoSession session, IdleStatus status) throws Exception {
		System.out.println("IDLE " + session.getIdleCount(status));
	}
}