Writing to a SocketChannel Writing data to a SocketChannel is done using the SocketChannel.write() method, which takes a Buffer as parameter. Here is an example:
String newData = "New String to write to file..." + System.currentTimeMillis();
ByteBuffer buf = ByteBuffer.allocate(48);
buf.clear();
buf.put(newData.getBytes());
buf.flip();
while(buf.hasRemaining()) {
channel.write(buf);
}
Notice how the SocketChannel.write() method is called inside a while-loop. There is no guarantee of how many bytes the write() method writes to the SocketChannel. Therefore we repeat the write() call until the Buffer has no further bytes to write.
出处： http://tutorials.jenkov.com/java-nio/socketchannel.html
上述教程说 socketchannel 应该放在 while 循环中进行写入数据，但是看网上的很多例子，并没有放入循环中，自己跑起来也能对，如 https://zhuanlan.zhihu.com/p/27365009 , 想知道哪种使用方法是正确的，谢谢解答
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