1 SocketChannel

1.1 打開一個SocketChannel

SocketChannel socketChannel = SocketChannel.open();

socketChannel.connect(new InetSocketAddress("http://www.baidu.com", 80));

1.2 關閉一個SocketChannel

socketChannel.close();

1.3 讀取一個SocketChannel

ByteBuffer buf = ByteBuffer.allocate(48);

int byteRead = socketChannel.read(buf);

2 ServerSocketChannel

2.1 ServerSocketChannel in blocking mode

??? ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();

??? serverSocketChannel.socket().bind(new InetSocketAddress(1111));

??? while(true) {

??????? SocketChannel socketChannel = serverSocketChannel.accept();

??????? // do something with socketChannel.......

??? }

2.2 ServerSocketChannel in non-blocking mode

??? ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();

??? serverSocketChannel.socket().bind(new InetSocketAddress(1111));

??? serverSocketChannel.configureBlocking(false);

??? while(true) {

??????? SocketChannel socketChannel = serverSocketChannel.accept();

??????? if (socketChannel != null)

??????? {

??????????? // do something with socketChannel.......

??????? }

??? }

在non-blocking mode時，沒有人來connect的時候accept()就會直接返回。這也是non-blocking的意義所在，對于文件而言，總是可以讀寫的，不存在block一說，也就沒有non-blocking mode了。

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轉載于:https://www.cnblogs.com/hustdc/p/8109785.html

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