http

服务端

NettyHttpServer

可参考：GitHub上netty项目中的example包中的代码

import io.netty.bootstrap.ServerBootstrap;
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.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;

public class NettyHttpServer {

    public static void main(String[] args) throws InterruptedException {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup(16);

        try {

            ServerBootstrap serverBootstrap = new ServerBootstrap();

            serverBootstrap.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast("http-decoder", new HttpRequestDecoder());
                            ch.pipeline().addLast("http-encoder", new HttpResponseEncoder());
                            ch.pipeline().addLast("aggregator", new HttpObjectAggregator(65536));
                            ch.pipeline().addLast("serverHandler", new HelloWorldServerHandler());
                        }
                    });

            ChannelFuture channelFuture = serverBootstrap.bind(8080).sync();
            channelFuture.channel().closeFuture().sync();

        } finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }

}

HelloWorldServerHandler

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import lombok.extern.slf4j.Slf4j;

import static io.netty.handler.codec.http.HttpHeaderNames.CONNECTION;
import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH;
import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_TYPE;
import static io.netty.handler.codec.http.HttpHeaderValues.CLOSE;
import static io.netty.handler.codec.http.HttpHeaderValues.KEEP_ALIVE;
import static io.netty.handler.codec.http.HttpHeaderValues.TEXT_PLAIN;
import static io.netty.handler.codec.http.HttpResponseStatus.OK;

@Slf4j
public class HelloWorldServerHandler extends SimpleChannelInboundHandler<HttpObject> {

    private static final byte[] CONTENT = { 'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd' };


    @Override
    protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
        log.info("来了Http消息了");
        if (msg instanceof HttpRequest) {
            HttpRequest req = (FullHttpRequest) msg;
            boolean keepAlive = HttpUtil.isKeepAlive(req);
            FullHttpResponse response = new DefaultFullHttpResponse(req.protocolVersion(), OK,
                    Unpooled.wrappedBuffer(CONTENT));
            response.headers()
                    .set(CONTENT_TYPE, TEXT_PLAIN)
                    .setInt(CONTENT_LENGTH, response.content().readableBytes());

            if (keepAlive) {
                if (!req.protocolVersion().isKeepAliveDefault()) {
                    response.headers().set(CONNECTION, KEEP_ALIVE);
                }
            } else {
                // Tell the client we're going to close the connection.
                response.headers().set(CONNECTION, CLOSE);
            }

            ChannelFuture f = ctx.writeAndFlush(response);

            if (!keepAlive) {
                f.addListener(ChannelFutureListener.CLOSE);
            }
        }
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        log.info("active===>");
    }


    @Override
    public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
        log.info("register===>");
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        log.info("断开连接===>");
    }

    @Override
    public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {

        log.info("取消注册===>");
    }

}

客户端

ApiPost

使用ApiPost接口测试工具发送请求，测试如下

服务端日志输出

 register===>
 active===>
 来了Http消息了
 断开连接===>
 取消注册===>