如何将字节写入服务器套接字

根据规范，您必须按照以下方式构建形状的数据包

| 2 | 2 | N ........ |

现在，这可能非常容易，并且有多种方法可以实现，我建议您使用以下一种方法：

import java.nio.ByteBuffer;import java.nio.ByteOrder;static byte[] buildPacket(int magicNumber, String payload) throws UnsupportedEncodingException{  // 4 bytes for header + payload  ByteBuffer buffer = ByteBuffer.allocate(2 + 2 + payload.length());  // we set that we want big endian numbers  buffer.order(ByteOrder.BIG_ENDIAN);  buffer.putShort((short)magicNumber);  buffer.putShort((short)payload.length());  buffer.put(payload.getBytes("US-ASCII"));  return buffer.array();}public static void main (String[] args) throws java.lang.Exception{    try    {        byte[] bytes = buildPacket(0xFF10, "foobar");        for (byte b : bytes)          System.out.printf("0x%02X ", b);    }    catch (Exception e)    {        e.printStackTrace();    }}

请注意，如果您声明

short

> 32767

short