NIO将数据发送到网络缓冲区

limit

1、byte[] bytes = str.getBytes()//将字符串装换成字节数组2、ByteBuffer writeBuffer = ByteBuffer.allocate(bytes.length)//申请内存空间3、writeBuffer.put(bytes);4、writeBuffer.flip()5、SocketChannel.write(writeBuffer)//将writeBuffer数据读出到SocketChannel

writeBuffer

position

flip