package lime.pri.limeNio.netty.netty01.server;

import java.net.InetSocketAddress;

import io.netty.bootstrap.ServerBootstrap;

import io.netty.channel.ChannelFuture;

import io.netty.channel.EventLoopGroup;

import io.netty.channel.nio.NioEventLoopGroup;

import io.netty.channel.socket.nio.NioServerSocketChannel;

public class NIOServerBootStrap {

    public static void main(String[] args) throws InterruptedException {

        ServerBootstrap bootstrap = new ServerBootstrap();

        EventLoopGroup boss = new NioEventLoopGroup();

        EventLoopGroup worker = new NioEventLoopGroup();

        bootstrap.group(boss, worker);

        bootstrap.channel(NioServerSocketChannel.class);

        bootstrap.childHandler(new CustomServerChannelInitializer());

        ChannelFuture channelFuture = bootstrap.bind(new InetSocketAddress(9999)).sync();

        channelFuture.channel().closeFuture().sync();

        boss.shutdownGracefully();

        worker.shutdownGracefully();

    }

}

package lime.pri.limeNio.netty.netty01.server;

import io.netty.channel.ChannelInitializer;

import io.netty.channel.ChannelPipeline;

import io.netty.channel.socket.SocketChannel;

public class CustomServerChannelInitializer extends ChannelInitializer<SocketChannel>{

    @Override

    protected void initChannel(SocketChannel ch) throws Exception {

        ChannelPipeline pipeline = ch.pipeline();

        pipeline.addLast(new CustomServerChannelHandlerAdapter());

    }

}

package lime.pri.limeNio.netty.netty01.server;

import java.util.Date;

import io.netty.buffer.ByteBuf;

import io.netty.channel.ChannelFuture;

import io.netty.channel.ChannelFutureListener;

import io.netty.channel.ChannelHandlerAdapter;

import io.netty.channel.ChannelHandlerContext;

import io.netty.util.CharsetUtil;

public class CustomServerChannelHandlerAdapter extends ChannelHandlerAdapter {

    /**

     * 服务器和客户端会话异常

     */

    @Override

    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {

        // TODO Auto-generated method stub

        super.exceptionCaught(ctx, cause);

    }

    /**

     * 当服务器与客户端联通时，通道被激活。

     */

    @Override

    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        // TODO Auto-generated method stub

        super.channelActive(ctx);

    }

    /**

     * 当服务器与客户端断开时，该方法被调用。

     */

    @Override

    public void channelInactive(ChannelHandlerContext ctx) throws Exception {

        // TODO Auto-generated method stub

        super.channelInactive(ctx);

    }

    /**

     * 通道读操作就绪，读取客户端消息

     */

    @Override

    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        ByteBuf buffer = (ByteBuf)msg;

        String request  = buffer.toString(CharsetUtil.UTF_8);

        System.out.println("客户端请求数据：" + request);

        buffer.clear();

        buffer.writeBytes(new Date().toString().getBytes());

        ChannelFuture channelFuture = ctx.writeAndFlush(buffer);

        channelFuture.addListener(ChannelFutureListener.CLOSE);

    }

}

package lime.pri.limeNio.netty.netty01.client;

import java.io.IOException;

import java.net.InetSocketAddress;

import io.netty.bootstrap.Bootstrap;

import io.netty.channel.ChannelFuture;

import io.netty.channel.EventLoopGroup;

import io.netty.channel.nio.NioEventLoopGroup;

import io.netty.channel.socket.nio.NioSocketChannel;

public class NIOBootStrap {

    public static void main(String[] args) throws IOException, InterruptedException {

        Bootstrap bootstrap = new Bootstrap();

        EventLoopGroup worker = new NioEventLoopGroup();

        bootstrap.group(worker);

        bootstrap.channel(NioSocketChannel.class);

        bootstrap.handler(new CustomClientChannelInitializer());

        ChannelFuture channelFuture = bootstrap.connect(new InetSocketAddress("127.0.0.1", 9999)).sync();

        channelFuture.channel().closeFuture().sync();

        worker.shutdownGracefully();

    }

}

package lime.pri.limeNio.netty.netty01.client;

import io.netty.channel.ChannelInitializer;

import io.netty.channel.ChannelPipeline;

import io.netty.channel.socket.SocketChannel;

public class CustomClientChannelInitializer extends ChannelInitializer<SocketChannel>{

    @Override

    protected void initChannel(SocketChannel ch) throws Exception {

        ChannelPipeline pipeline = ch.pipeline();

        pipeline.addLast(new CustomClientChannelHandlerAdapter());

    }

}

package lime.pri.limeNio.netty.netty01.client;

import io.netty.buffer.ByteBuf;

import io.netty.buffer.Unpooled;

import io.netty.channel.ChannelHandlerAdapter;

import io.netty.channel.ChannelHandlerContext;

import io.netty.util.CharsetUtil;

public class CustomClientChannelHandlerAdapter extends ChannelHandlerAdapter {

    /**

     * 服务器和客户端会话异常

     */

    @Override

    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {

        // TODO Auto-generated method stub

        super.exceptionCaught(ctx, cause);

    }

    /**

     * 当服务器与客户端联通时，通道被激活。

     */

    @Override

    public void channelActive(ChannelHandlerContext ctx) throws Exception {

        ByteBuf buffer = Unpooled.buffer();

        ctx.writeAndFlush(buffer.writeBytes("Query Date".getBytes()));

    }

    /**

     * 当服务器与客户端断开时，该方法被调用。

     */

    @Override

    public void channelInactive(ChannelHandlerContext ctx) throws Exception {

        // TODO Auto-generated method stub

        super.channelInactive(ctx);

    }

    /**

     * 通道多操作就绪，读取服务端消息

     */

    @Override

    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        System.out.println("服务端响应数据：" + ((ByteBuf) msg).toString(CharsetUtil.UTF_8));

        // 会话关闭操作由服务端启动，客户端不主动关闭会话。

    }

}

客户端请求数据：Query Date

服务端响应数据：Sat Jun 24 17:43:41 CST 2017