如何使用I / O多路复用在Java服务器中异步处理请求？

这里是一个关于如何使用java nio api来完成它而不将线程数链接到客户端数量的概述.

**//Thread T0** //wait for selection keys
...
Iterator it = selector.selectedKeys().iterator( );

while (it.hasNext( )) { 
    SelectionKey key = (SelectionKey) it.next();
    // Is a new connection coming in? 
    if (key.isAcceptable( )) {
        ServerSocketChannel server = (ServerSocketChannel) key.channel();
        SocketChannel channel = server.accept()
        // Set the new channel nonblocking
        channel.configureBlocking (false);
        // Register it with the selector
        channel.register (selector,SelectionKey.OP_READ);
    }

    // Is there data to read on this channel?
    if (key.isReadable( )) {
       processRequest (key);
    }

    it.remove( );
}

...

ExecutorService service = Executors.newFixedThreadPool(50);
...
void processRequest(final SelectionKey key) {

    **//Thread T1-T50** //deal with request
    executorService.submit(new Runnable() {            
        SocketChannel channel = (SocketChannel) key.channel();

        //read data from channel,process it and write back to the channel.
    });
)
}