nio服务器创建步骤

ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();

serverSocketChannel.bind(new InetSocketAddress(InetAddress.getLocalHost(), 8080));

serverSocketChannel.configureBlocking(false);

Selector selector = Selector.open();

serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);

while (true) {
    int numKeys = selector.select();
    if (numKeys > 0) {
        Set<SelectionKey> selectedKeys = selector.selectedKeys();
        Iterator<SelectionKey> keyIterator = selectedKeys.iterator();
        while (keyIterator.hasNext()) {
            SelectionKey key = keyIterator.next();
            if (key.isAcceptable()) {
                // 处理新的连接请求
            } else if (key.isReadable()) {
                // 处理可读的通道
            } else if (key.isWritable()) {
                // 处理可写的通道
            }
            keyIterator.remove();
        }
    }
}