c++的CRC16校验程序转成java的，帮下忙

[jzinfo]

unsigned char CRCL,CRCH;
void GenerateCRC(BYTE *cal_data, int cal_len)
{	//CRC 初始种子数为0xFFFF；
	CRCL=0xFF; //CRC低字节值
  	CRCH=0xFF; //CRC高字节值
const	int CRC_Table[8*32]={
	0x0000,0x8005,0x800F,0x000A,0x801B,0x001E,0x0014,0x8011,  
	0x8033,0x0036,0x003C,0x8039,0x0028,0x802D,0x8027,0x0022, 
	0x8063,0x0066,0x006C,0x8069,0x0078,0x807D,0x8077,0x0072, 
	0x0050,0x8055,0x805F,0x005A,0x804B,0x004E,0x0044,0x8041, 
	0x80C3,0x00C6,0x00CC,0x80C9,0x00D8,0x80DD,0x80D7,0x00D2, 
	0x00F0,0x80F5,0x80FF,0x00FA,0x80EB,0x00EE,0x00E4,0x80E1, 
	0x00A0,0x80A5,0x80AF,0x00AA,0x80BB,0x00BE,0x00B4,0x80B1, 
	0x8093,0x0096,0x009C,0x8099,0x0088,0x808D,0x8087,0x0082, 
	0x8183,0x0186,0x018C,0x8189,0x0198,0x819D,0x8197,0x0192, 
	0x01B0,0x81B5,0x81BF,0x01BA,0x81AB,0x01AE,0x01A4,0x81A1, 
	0x01E0,0x81E5,0x81EF,0x01EA,0x81FB,0x01FE,0x01F4,0x81F1, 
	0x81D3,0x01D6,0x01DC,0x81D9,0x01C8,0x81CD,0x81C7,0x01C2, 
	0x0140,0x8145,0x814F,0x014A,0x815B,0x015E,0x0154,0x8151, 
	0x8173,0x0176,0x017C,0x8179,0x0168,0x816D,0x8167,0x0162, 
	0x8123,0x0126,0x012C,0x8129,0x0138,0x813D,0x8137,0x0132, 
	0x0110,0x8115,0x811F,0x011A,0x810B,0x010E,0x0104,0x8101,
	0x8303,0x0306,0x030C,0x8309,0x0318,0x831D,0x8317,0x0312, 
	0x0330,0x8335,0x833F,0x033A,0x832B,0x032E,0x0324,0x8321, 
	0x0360,0x8365,0x836F,0x036A,0x837B,0x037E,0x0374,0x8371, 
	0x8353,0x0356,0x035C,0x8359,0x0348,0x834D,0x8347,0x0342, 
	0x03C0,0x83C5,0x83CF,0x03CA,0x83DB,0x03DE,0x03D4,0x83D1, 
	0x83F3,0x03F6,0x03FC,0x83F9,0x03E8,0x83ED,0x83E7,0x03E2, 
	0x83A3,0x03A6,0x03AC,0x83A9,0x03B8,0x83BD,0x83B7,0x03B2, 
	0x0390,0x8395,0x839F,0x039A,0x838B,0x038E,0x0384,0x8381, 
	0x0280,0x8285,0x828F,0x028A,0x829B,0x029E,0x0294,0x8291, 
	0x82B3,0x02B6,0x02BC,0x82B9,0x02A8,0x82AD,0x82A7,0x02A2, 
	0x82E3,0x02E6,0x02EC,0x82E9,0x02F8,0x82FD,0x82F7,0x02F2, 
	0x02D0,0x82D5,0x82DF,0x02DA,0x82CB,0x02CE,0x02C4,0x82C1, 
	0x8243,0x0246,0x024C,0x8249,0x0258,0x825D,0x8257,0x0252, 
	0x0270,0x8275,0x827F,0x027A,0x826B,0x026E,0x0264,0x8261, 
	0x0220,0x8225,0x822F,0x022A,0x823B,0x023E,0x0234,0x8231, 
	0x8213,0x0216,0x021C,0x8219,0x0208,0x820D,0x8207,0x0202 }; 
	unsigned int  table_addr;
  	while(cal_len- -)
	{	table_addr=(*cal_data++ ^ CRCH);
  		CRCH=(CRC_Table[table_addr] >> 8) ^ CRCL;
  		CRCL=(CRC_Table[table_addr] & 0x00FF);
	}

哪位能帮忙搞成java的哈 ，看着头大。

谢谢了！

[火龙果被占用了]

这段代码转成 Java 的话很好转的呀，估计你看不懂这些指针运算吧：

void GenerateCRC(BYTE *cal_data, int cal_len)
方法参数中的 *cal_data 表示一个指向 BYTE 类型的指针，根据问题可以认为这是一个指向 byte 数组首地址的指针，这里可以理解为 Java 中的 byte[]

table_addr=(*cal_data++ ^ CRCH);
代码中的 *cal_data++ 表示先取如当前 cal_data 所指向的 byte 数据之后，再将 cal_data 指向往后挪一个 byte 的长度位。可以理解为 Java 中的 bytes[i++];

[希望对你有帮助]

仅仅靠别人是不行的哈朋友。 还是希望你自己写了后，有什么错误信息贴出来，我们大家可以帮你解决。





希望对你有帮助

[jzinfo]

火龙果：
我把下面那部分改成这样的：

for (int i = 0; i <bytes.length; i++) {
			int index = (bytes[i] ^ crcHight) & 0xff;
			crcHight = (byte) ((crc_table[index] >> 8) ^ crcLow);
			crcLow = (byte) (crc_table[index] & 0x00ff);
		}

结果和实际的不对

比如byte[] test={0x30,0x01,0x07}
c++原程序这个结果是：8b d1
我改写后的结果计算的结果 始终是crcHigh是fa，crcLow是de