NIO中的SocketChannel多次write之后 用read如何做到区分多次的数据

Question

例如socketChannel.write(ByteBuffer) buteBuffer的长度可能随时变更，但是接收的时候read方法是以一个固定的长度接收的

发送方

byte[] outData = new byte[2048];
ByteBuffer outByteBuffer = ByteBuffer.wrap(outData);
toWriteNrBytes = 获取数据返回一个长度；
outByteBuffer.limit(toWriteNrBytes);
socketChannel.write(outByteBuffer);

接收方

byte[] inData = new byte[2048];
ByteBuffer inByteBuffer = ByteBuffer.wrap(inData);
readNrBytes = socketChannel.read(inByteBuffer);

可是这个readNrBytes并不能实时的到每次写入的长度，请问怎么解决

Answer 1

这不是很简单？Buffer满了你把他清掉不就能继续用了？

            int allReadyRead;
            while ((allReadyRead = socketChannel.read(byteBuffer)) != -1) {
                if (allReadyRead == 0) {
                    if (byteBuffer.limit() == byteBuffer.position()) {
                        byteBuffer.clear();
                        continue;
                    }
                }
                System.out.println("我是客户端，服务器返回信息：" + new String(byteBuffer.array(), byteBuffer.arrayOffset(), byteBuffer.arrayOffset() + byteBuffer.position(), "UTF-8"));
            }