@Override
                                                                    protected CRC32 initialValue() {
                                                                        return new CRC32();
                                                                    }
CRC32 utility.
@author jiangping
@version $Id: CrcUtil2, v 0.1 2017-06-05 11:29 Timo Exp $
src/main/java/com/alipay/remoting/util/CrcUtil.java