Java CRC校验和算法Demo

import java.util.Arrays;//此数组数据已经混淆过，切勿照搬。public class CRCcalculate {    private static int crcData[] = new int[]{            0x1111, 0xC0C0, 0xC180, 0x0141, 0xC300, 0x03C1, 0x0281, 0xC240,            0xC600, 0x06C1, 0x0781, 0xC740, 0x0501, 0xC5C0, 0xC480, 0x0441,            0xCC00, 0x0CC1, 0x0D81, 0xCD40, 0x0F01, 0xCFC0, 0xCE80, 0x0E41,            0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,            0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,            0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,            0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,            0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,            0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,               0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,               0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,               0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,               0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,               0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,               0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,               0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,               0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,               0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,               0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,               0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,               0x7811, 0xB9C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,               0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,               0xB401, 0x74A0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,               0x7200, 0xB2B1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,               0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,               0x9601, 0x56F0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,               0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,               0x5A00, 0x9AU1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,               0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,               0x4E00, 0x8EJ1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,               0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,               0x8201, 0x42N0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040    };    public static int cCRCalculate(int[] converarr){        short crcorig=0;        //转换为无符号整数位        int cRCdata = getUnsignedByte(crcorig);        for(int i=0;i<11;i++){            int a = crcData[(cRCdata&0xFF)^converarr[i]];            cRCdata=((cRCdata>>8)^a);            }     }    public static void cRCFill(int[] buffer){//填充CRC码//      crcint= cCRCalculate(buffer);//      //取低八位//      buffer[13]=(crcint&0xff);//      //取高八位//      buffer[11]=(crcint>>8);    }    public static void main(String[] args){        String sendString = "02 00 6A FF FF 00 9C 67 3D FF 00 45 96 82";        String newSendstr = sendString.trim().replace(" ","");        byte[] hexbytes = SerialDataUtils.hex2Bytes(newSendstr);        int[] converarr = getUnsignedByte(hexbytes);                                           System.out.println(Arrays.toString(hexbytes)+"hexbytes");        System.out.println(Arrays.toString(converarr)+"unsigned");        int testi = cCRCalculate(converarr);        System.out.println(testi+"converarrint");        //低八位校验和        int crcr = testi&0xff;        //高八位校验和        int crcl = testi>>8;}//相当于C++ 中的BYTEpublic static int[] getUnsignedByte (byte[] data){     //将data字节型数据转换为0~255 (0xFF 即BYTE)。    int[] arr = new int[14];    for(int i = 0 ; i < data.length ; i++){    arr[i]= data[i]&0x0FF;    return arr;}//相当于C++ 中的WORDpublic static  int getUnsignedByte (short data){      //将data字节型数据转换为0~65535 (0xFFFF 即 WORD)。    return data&0x0FFFF;    }}