网络编程 -- RPC实现原理 -- Netty -- 迭代版本V1 -- 入门应用

　网络编程 -- RPC实现原理 -- 目录

　　啦啦啦

V1——Netty入门应用

　　Class ： NIOServerBootStrap

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();
    }
}

　　Class ： CustomServerChannelInitializer

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());
    }

}

　　Class ： 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);
    }

}

　　Class ：

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();
    }
}

　　Class ： CustomClientChannelInitializer

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());
    }

}

　　Class ： 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。
    }

}

　　Console ： Server

客户端请求数据：Query Date

　　Console ： Client

服务端响应数据：Sat Jun 24 17:43:41 CST 2017

啦啦啦