netty服务端http

最新推荐文章于 2024-05-17 09:55:41 发布

王小强-

最新推荐文章于 2024-05-17 09:55:41 发布

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分类专栏： netty 文章标签： netty http

本文链接：https://blog.youkuaiyun.com/wq_wangqiang/article/details/95640760

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博客提及了Netty Server，Netty是高性能网络编程框架，常用于构建服务器。结合标签可知可能与Netty处理HTTP请求相关，在网络编程领域有重要应用。

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nettyserver

package com.wq.netty;

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;

import java.nio.channels.spi.AbstractSelectableChannel;

public class nettyServer {
    public static void main(String[] args)  {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try{
           ServerBootstrap serverBootstrap = new ServerBootstrap();
           serverBootstrap.group(bossGroup,workerGroup).
                   channel(NioServerSocketChannel.class).
                   childHandler(new ServerInitializer<AbstractSelectableChannel>());
           ChannelFuture channelFuture = serverBootstrap.bind(8899).sync();
           channelFuture.channel().closeFuture().sync();
       }catch (Exception e){
            e.printStackTrace();
        }finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
       }
        //https://www.cnblogs.com/zhuzhenwei918/p/6781314.html
    }
}

ServerInitializer

package com.wq.netty;

import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpServerCodec;

import java.nio.channels.spi.AbstractSelectableChannel;

public class ServerInitializer<S extends AbstractSelectableChannel> extends ChannelInitializer<SocketChannel> {
    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline channelPipeline = ch.pipeline();
        channelPipeline.addLast("HttpServerCodec",new HttpServerCodec());
        channelPipeline.addLast("testhttpserhandler" ,new ServerHandler());
    }
}

ServerHandler

package com.wq.netty;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.util.CharsetUtil;

import java.net.URI;


public class ServerHandler extends SimpleChannelInboundHandler<HttpObject> {
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
        System.out.println(msg.getClass());
        System.out.println(ctx.channel().remoteAddress());
        Thread.sleep(8000);
        if (msg instanceof HttpRequest){
            HttpRequest httpRequest = (HttpRequest) msg;
            System.out.println("请求方法名："+httpRequest.method().name());
            URI uri = new URI(httpRequest.uri());
            if("/favicon.ico".equals(uri.getPath())){
                System.out.println("请求/favicon.ico");
                return;
            }
            System.out.println("执行channelRead0");
            ByteBuf content = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
            FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_0, HttpResponseStatus.OK,content);
            response.headers().set(HttpHeaderNames.CONTENT_TYPE,"text/plain");
            response.headers().set(HttpHeaderNames.CONTENT_LENGTH,content.readableBytes());
            ctx.writeAndFlush(response);
            ctx.channel().close();
        }
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("channel Active");
        super.channelActive(ctx);
    }

    @Override
    public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
        System.out.println("channel Registered");
        super.channelRegistered(ctx);
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handler Added");
        super.handlerAdded(ctx);
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("channel Inactive");
        super.channelInactive(ctx);
    }

    @Override
    public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
        System.out.println("channel Unregistered");
        super.channelUnregistered(ctx);
    }
}