springBoot项目引入netty实例

可以通过以下步骤在Spring Boot项目中引入Netty:

1. 在项目的pom.xml文件中添加Netty的依赖:

<dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-all</artifactId>
    <version>4.1.63.Final</version>
</dependency>

2. 创建一个Netty服务器类，例如 `NettyServer`:

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;

public class NettyServer {
    private final int port;

    public NettyServer(int port) {
        this.port = port;
    }

    public void start() throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap bootstrap = new ServerBootstrap();
            bootstrap.group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new YourNettyHandler());
                    }
                });

            ChannelFuture future = bootstrap.bind(port).sync();
            future.channel().closeFuture().sync();
        } finally {
            workerGroup.shutdownGracefully();
            bossGroup.shutdownGracefully();
        }
    }
}

3. 创建一个Netty处理器类，例如 `YourNettyHandler`，用于处理接收到的消息:

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

public class YourNettyHandler extends ChannelInboundHandlerAdapter {
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        // 处理接收到的消息
        ByteBuf byteBuf = (ByteBuf) msg;
        // TODO: 处理消息逻辑
        byteBuf.release();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        // 发生异常时的处理逻辑
        cause.printStackTrace();
        ctx.close();
    }
}

4. 在Spring Boot应用的入口类中启动Netty服务器，例如 `Application`:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {
    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);

        // 启动Netty服务器
        NettyServer server = new NettyServer(8080);
        server.start();
    }
}

这样，你就可以在Spring Boot项目中成功引入并使用Netty了。请根据自己的需求进行相应的配置和修改。