Netty(七) Netty5.x服务端+客户端代码

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Netty5.x服务端+客户端代码

netty学习目录
一、Netty(一) NIO例子
二、Netty(二) netty服务端
三、Netty(三) Netty客户端+服务端
四、Netty(四) 简化版Netty源码
五、Netty(五)Netty5.x服务端
六、Netty(六) Netty Http 服务器例子
七、Netty(七) Netty服务端+客户端代码
八、Netty(八) Netty多客户端连接例子
九、Netty(九) Netty会话清除
十、Netty(十) Netty自定义编码器解码器
十一、Netty(十一) Netty对象传输

netty5.x 客户端与服务端代码,基本差不多，channel改为NioSocketChannel

服务端：

package com.zqw.netty5x;import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;import java.net.InetSocketAddress;public class Server {public static void main(String[] args) {ServerBootstrap bootstrap = new ServerBootstrap();EventLoopGroup boss = new NioEventLoopGroup();EventLoopGroup worker = new NioEventLoopGroup();try {bootstrap.group(boss, worker);bootstrap.channel(NioServerSocketChannel.class);bootstrap.childHandler(new ChannelInitializer<Channel>() {@Overrideprotected void initChannel(Channel ch) throws Exception {ch.pipeline().addLast(new StringEncoder());ch.pipeline().addLast(new StringDecoder());ch.pipeline().addLast(new ServerHandler());}});bootstrap.option(ChannelOption.SO_BACKLOG, 1024);bootstrap.childOption(ChannelOption.TCP_NODELAY, true);bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);ChannelFuture future = bootstrap.bind(new InetSocketAddress(7777));future.channel().closeFuture().sync();System.out.println("server start");} catch (InterruptedException e) {e.printStackTrace();}finally {boss.shutdownGracefully();worker.shutdownGracefully();}}
}

package com.zqw.netty5x;import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.concurrent.EventExecutorGroup;public class ServerHandler extends SimpleChannelInboundHandler<String> {@Overrideprotected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {System.out.println(msg);ctx.writeAndFlush("给你个回话");}
}

客户端：

package com.zqw.netty5x;import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;import java.util.Scanner;public class Client {public static void main(String[] args) {Bootstrap bootstrap = new Bootstrap();EventLoopGroup worker = new NioEventLoopGroup();try{bootstrap.group(worker);bootstrap.channel(NioSocketChannel.class);bootstrap.handler(new ChannelInitializer<Channel>() {@Overrideprotected void initChannel(Channel ch) throws Exception {ch.pipeline().addLast(new StringEncoder());ch.pipeline().addLast(new StringDecoder());ch.pipeline().addLast(new ClientHandler());}});ChannelFuture futrue = bootstrap.connect("localhost", 7777);Scanner scanner = new Scanner(System.in);while(true){System.out.println("请输入:");futrue.channel().writeAndFlush(scanner.next());}}catch (Exception e){e.printStackTrace();}finally {worker.shutdownGracefully();}}
}

package com.zqw.netty5x;import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.concurrent.EventExecutorGroup;public class ClientHandler extends SimpleChannelInboundHandler<String> {@Overrideprotected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {System.out.println(msg);}
}