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package cn.rainwer.nettywebsocket.Server;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.HttpServerCodec;
import io.netty.handler.codec.http.HttpServerExpectContinueHandler;public class NettyHttpServer {public static void main(String[] args) {EventLoopGroup bossGroup = new NioEventLoopGroup(1);EventLoopGroup workerGroup = new NioEventLoopGroup();ChannelFuture f = null;try {//ServerBootstrap负责初始化netty服务器，并且开始监听端口的socket请求ServerBootstrap b = new ServerBootstrap();b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer<SocketChannel>() {@Overrideprotected void initChannel(SocketChannel socketChannel) throws Exception {// 为监听客户端read/write事件的Channel添加用户自定义的ChannelHandlersocketChannel.pipeline()
//                                    .addLast("decoder", new HttpRequestDecoder())
//                                    .addLast("encoder", new HttpResponseEncoder()).addLast(new HttpServerCodec()).addLast(new HttpServerExpectContinueHandler()).addLast("aggregator", new HttpObjectAggregator(512 * 1024)).addLast(new NettyWebSocketConnectHandler2());}});f = b.bind(9996).sync();System.out.println("======NettyServer启动成功!!!=========");// f.channel().closeFuture().sync();} catch (Exception e) {e.printStackTrace();} finally {if (f != null && f.isSuccess()) {System.out.println("Netty server listening on port " + " and ready for connections...");} else {System.out.println("Netty server start up Error!");}}}
}

package cn.rainwer.nettywebsocket.Server;import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;import java.net.InetAddress;
import java.nio.charset.StandardCharsets;@Slf4j
@ChannelHandler.Sharable
@Component
public class NettyWebSocketConnectHandler2 extends SimpleChannelInboundHandler<Object> {@Overridepublic void channelRead(ChannelHandlerContext channelHandlerContext, Object msg) throws Exception {if (msg instanceof FullHttpRequest) {log.info("准备提取token");//转化为http请求FullHttpRequest request = (FullHttpRequest) msg;//拿到请求地址String uri = request.uri();System.out.println(uri);//判断是不是websocket请求，如果是拿出我们传递的参数（我的是token）channelHandlerContext.channel().writeAndFlush("Welcome to " + InetAddress.getLocalHost().getHostName() + " service!\n");FullHttpResponse fullHttpResponse = new DefaultFullHttpResponse(request.protocolVersion(), HttpResponseStatus.OK, Unpooled.wrappedBuffer(uri.getBytes(StandardCharsets.UTF_8)));fullHttpResponse.headers().set(HttpHeaderNames.CONTENT_TYPE, HttpHeaderValues.TEXT_PLAIN).set(HttpHeaderNames.CONTENT_LENGTH, fullHttpResponse.content().readableBytes());channelHandlerContext.writeAndFlush(fullHttpResponse);} else {}}
}