java中实现十六进制和二进制之间的相互转换-蒲公英云

java中实现十六进制和二进制之间的相互转换

傷城~ 2022-11-04 14:25 341阅读 0赞

public static void main(String[] args) { 
            String str= "060A04000000C2";
            byte byteStr[] = parseHexStr2Byte(str);
            System.err.println("二进制结果："+byteStr);
           String dataStr =  parseByte2HexStr(byteStr);
           System.err.println("十六进制结果："+dataStr );
    }
    /** * 将二进制转换成16进制 * * @param buf * @return */
    public static void parseByte2HexStr(byte buf[]) { 
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < buf.length; i++) { 
            String hex = Integer.toHexString(buf[i] & 0xFF);
            if (hex.length() == 1) { 
                hex = '0' + hex;
            }
            sb.append(hex.toUpperCase());
        }
        return sb.toString();
    }
    /** * 将16进制转换为二进制 * * @param hexStr * @return */
    public static byte[] parseHexStr2Byte(String hexStr) { 
        if (hexStr.length() < 1)
            return null;
        byte[] result = new byte[hexStr.length() / 2];
        for (int i = 0; i < hexStr.length() / 2; i++) { 
            int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2),
                    16);
            result[i] = (byte) (high * 16 + low);
        }
        return result;
    }