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netty怎么監(jiān)聽多個端口

小億
319
2024-03-14 14:40:48
欄目: 編程語言

在Netty中監(jiān)聽多個端口是通過創(chuàng)建多個ServerBootstrap實例來實現(xiàn)的。每個ServerBootstrap實例都會使用不同的端口號和ChannelInitializer來處理不同的業(yè)務(wù)邏輯。

以下是一個簡單的示例代碼,演示如何在Netty中監(jiān)聽多個端口:

public class MultiplePortServer {

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

        try {
            ServerBootstrap bootstrap1 = new ServerBootstrap();
            ServerBootstrap bootstrap2 = new ServerBootstrap();

            bootstrap1.group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) {
                        ch.pipeline().addLast(new ChannelHandler1());
                    }
                });

            bootstrap2.group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) {
                        ch.pipeline().addLast(new ChannelHandler2());
                    }
                });

            ChannelFuture future1 = bootstrap1.bind(8080).sync();
            ChannelFuture future2 = bootstrap2.bind(9090).sync();

            future1.channel().closeFuture().sync();
            future2.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }
}

在這個示例中,我們創(chuàng)建了兩個ServerBootstrap實例,分別監(jiān)聽8080和9090端口。每個ServerBootstrap實例使用不同的ChannelInitializer來處理不同的業(yè)務(wù)邏輯。

需要注意的是,在實際生產(chǎn)環(huán)境中,可能需要配置更多的參數(shù)和處理更多的異常情況。這里只是一個簡單的示例,用于演示如何在Netty中監(jiān)聽多個端口。

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