netty demo1

package com.chigo.it.netty.http;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelOption;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;

/**
 * @description:
 * @version: 1.0
 */
public class NettyServer {
    public static void main(String[] args) {
        NioEventLoopGroup bossGroup = new NioEventLoopGroup();
        NioEventLoopGroup wordGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap bootstrap = new ServerBootstrap().group(bossGroup, wordGroup).channel(NioServerSocketChannel.class).option(ChannelOption.SO_BACKLOG, 128)
                    .childOption(ChannelOption.SO_KEEPALIVE, true).childHandler(new NettyServerChannelInitializer());
            ChannelFuture channelFuture = bootstrap.bind(9999).sync();
            channelFuture.addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture channelFuture) throws Exception {
                    if (channelFuture.isSuccess()) {
                        System.out.println("监听端口9999成功");
                    }else {
                        System.out.println("监听端口9999失败");
                    }
                }
            });
            channelFuture.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }finally {
            bossGroup.shutdownGracefully();
            wordGroup.shutdownGracefully();
        }
    }
}

package com.chigo.it.netty.http;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpObject;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;

import java.net.ResponseCache;
import java.net.URL;

/**
 * @description:
 * @version: 1.0
 */
public class NettyServerHandler extends SimpleChannelInboundHandler<HttpObject> {
    @Override
    protected void channelRead0(ChannelHandlerContext channelHandlerContext, HttpObject httpObject) throws Exception {
        if (httpObject instanceof HttpRequest) {
            System.out.println(httpObject.getClass());
            System.out.println(channelHandlerContext.channel().remoteAddress());

            HttpRequest httpRequest = (HttpRequest) httpObject;
            URL url = new URL(httpRequest.uri());
            if ("/favicon.ico".equals(url)) {
                return;
            }
            ByteBuf byteBuf = Unpooled.copiedBuffer("hello, 我是服务器".getBytes());
            HttpResponse httpResponse = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK,byteBuf);
            httpResponse.headers().set(HttpHeaderNames.CONTENT_TYPE,"test/plain");
            httpResponse.headers().set(HttpHeaderNames.CONTENT_LENGTH,byteBuf.readableBytes());

            channelHandlerContext.writeAndFlush(httpResponse);
        }
    }
}

package com.chigo.it.netty.http;

import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.handler.codec.http.HttpServerCodec;

/**
 * @description:
 * @version: 1.0
 */
public class NettyServerChannelInitializer extends ChannelInitializer {
    @Override
    protected void initChannel(Channel channel) throws Exception {
        channel.pipeline().addLast("httpServerCode",new HttpServerCodec());
        channel.pipeline().addLast("nettyServerHandler",new NettyServerHandler());
    }
}