0
public void routeMessage(byte[] data, int mode) {
    logger.debug(mode);
    logger.debug(Integer.toBinaryString(mode));
    byte[] message = new byte[8];
    ByteBuffer byteBuffer = ByteBuffer.allocate(4);
    ByteArrayOutputStream baoStream = new ByteArrayOutputStream();
    DataOutputStream doStream = new DataOutputStream(baoStream);
    try {
        doStream.writeInt(mode);
    } catch (IOException e) {
        logger.debug("Error converting mode from integer to bytes.", e);
        return;
    }
    byte [] bytes = baoStream.toByteArray();
    bytes[0] = (byte)((mode >>> 24) & 0x000000ff);
    bytes[1] = (byte)((mode >>> 16) & 0x000000ff);
    bytes[2] = (byte)((mode >>> 8) & 0x00000ff);
    bytes[3] = (byte)(mode & 0x000000ff);
    //bytes = byteBuffer.array();
    for (byte b : bytes) {
        logger.debug(b);
    }
    for (int i = 0; i < 4; i++) {
        //byte tmp = (byte)(mode >> (32 - ((i + 1) * 8)));
        message[i] = bytes[i];
        logger.debug("mode, " + i + ": " + Integer.toBinaryString(message[i]));
        message[i + 4] = data[i];
    }
    broker.routeMessage(message);
}

我尝试了不同的方法(从注释代码中可以看出)将模式转换为四个字节,以通过套接字将其发送到另一个应用程序。它适用于高达 127 的整数,然后再适用于超过 256 的整数。我相信它与被签名的 Java 类型有关,但似乎并没有让它工作。以下是程序打印的一些示例。

127
1111111
0
0
0
127
mode, 0: 0
mode, 1: 0
mode, 2: 0
mode, 3: 1111111

128
10000000
0
0
0
-128
mode, 0: 0
mode, 1: 0
mode, 2: 0
mode, 3: 11111111111111111111111110000000

    211
    11010011
    0
    0
    0
    -45
    mode, 0: 0
    mode, 1: 0
    mode, 2: 0
    mode, 3: 11111111111111111111111111010011

306
100110010
0
0
1
50
mode, 0: 0
mode, 1: 0
mode, 2: 1
mode, 3: 110010

一个字节怎么可能突然存储 32 位?我该如何解决这个问题?

4

1 回答 1

0

尝试这个:

int Header = 123456
ByteBuffer bytes = ByteBuffer.allocate(4);
bytes.putInt(Header);
byte[] buffer = bytes.array();

字节数组缓冲区包含 4 个字节的整数值。
改成:

message[i] = bytes[i] & 0xFF;
于 2012-09-18T09:29:19.290 回答