将主线程放回Netty ServerSocket

Hos*_*ein 5 java multithreading netty

我有一个问题,关于如何在创建TCP服务器套接字时将主线程恢复到Netty中.

在下面取自代码在这里,"你好你好"永远不会被写入输出作为启动服务器,等待在这条线螺纹:f.channel().closeFuture().sync();.在这种情况下,我是否需要创建一个单独的线程来获取主线程,或者在Netty中是否有任何方法可以允许我这样做(在后台运行TCP时获取主线程)?

public void start() throws Exception {
    NioEventLoopGroup group = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(group)
         .channel(NioServerSocketChannel.class)
         .localAddress(new InetSocketAddress(port))
         .childHandler(new ChannelInitializer<SocketChannel>() {
             @Override
             public void initChannel(SocketChannel ch) 
                 throws Exception {
                 ch.pipeline().addLast(
                         new EchoServerHandler());
             }
         });

        ChannelFuture f = b.bind().sync();
        System.out.println(EchoServer.class.getName() + " started and listen on " + f.channel().localAddress());
        f.channel().closeFuture().sync();
    } finally {
        group.shutdownGracefully().sync();
    }
}

public static void main(String[] args) throws Exception {
    if (args.length != 1) {
        System.err.println(
                "Usage: " + EchoServer.class.getSimpleName() +
                " <port>");
        return;
    }
    int port = Integer.parseInt(args[0]);
    new EchoServer(port).start();
    System.out.println("Hello Hello");
}
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Fer*_*big 4

您无需等待近期。这只是在教程中完成的,以使事件循环组正确关闭。

您可以从程序中删除f.channel().closeFuture().sync();group.shutdownGracefully().sync();行以使其非阻塞。

确保在关闭主程序时调用f.channel().close(), thenf.channel().closeFuture().sync()和finally以确保 Netty 堆栈正确停止group.shutdownGracefully().sync();