两个对象属性完全相同时的赋值方法

JifenBusinessContractGoods origin = (JifenBusinessContractGoods) JifenBusinessContractGoodsService.jifenBusinessContractGoodsDAO.get(jifenBusinessContractGoods.getId());
        JifenBusinessContractGoodsLog log = new JifenBusinessContractGoodsLog();
        ConvertUtils.register(new org.apache.commons.beanutils.converters.DateConverter(null),
                java.util.Date.class);
        org.apache.commons.beanutils.BeanUtils.copyProperties(log,origin);