//前台传到后台的日期字符串格式为 yyyy-MM-dd HH:mm:ss

JSONArray jsonArray = JSONArray.fromObject(awardsArr);
List<B2CPrizesBean> b2CPrizesList = (List<B2CPrizesBean>)JSONArray.toCollection(jsonArray,B2CPrizesBean.class);

解决办法：

static{
        String[] dateFormats = new String[] {"yyyy-MM-dd HH:mm:ss"};
        JSONUtils.getMorpherRegistry().registerMorpher(new DateMorpher(dateFormats));
}