项目中出现的几个问题

非主键数据验证数据的唯一性

一般是通过Ajax的方式来从后台获取是否唯一
后台再通过去数据库查找,数据库语句为

select count(*) from TableName where number =?

JS下将中国标准时间转化为指定格式时间

在我们使用日期的时候经常会遇到 这种情况，下面是我搜索到的一个工具方法

var format = function(time, format){
    var t = new Date(time);
    var tf = function(i){return (i < 10 ? '0' : '') + i};
    return format.replace(/yyyy|MM|dd|HH|mm|ss/g, function(a){
        switch(a){
            case 'yyyy':
                return tf(t.getFullYear());
                break;
            case 'MM':
                return tf(t.getMonth() + 1);
                break;
            case 'mm':
                return tf(t.getMinutes());
                break;
            case 'dd':
                return tf(t.getDate());
                break;
            case 'HH':
                return tf(t.getHours());
                break;
            case 'ss':
                return tf(t.getSeconds());
                break;
        }
    })
}
//使用该方法
alert(format("Thu Aug 22 2013 15:12:00 GMT+0800", 'yyyy-MM-dd HH:mm:ss'));

CreateSQLQuery将结果转换为Map

    public List> getTypeMoney()
    {
        //payrecordsDao.find
        SQLQuery query =payrecordsDao.getSession().createSQLQuery("select t.typename,sum(p.payment) as sumpay from Payrecords p INNER JOIN paytype t where t.typeid =p.typeid group by t.typeid");
        query.setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
        return query.list();
        //return payrecordsDao.getSession().createQuery("select typeid,sum(payment) as sumpay from Payrecords group by typeid").list();
        //return    (List)payrecordsDao.getSession().createSQLQuery("select typeid,sum(payment) as sumpay from Payrecords group by typeid").addEntity(Record.class).list();
        //payrecordsDao.getSession();
        //payrecordsDao.find(page,"select typeid,sum(payment) as sumpay from Payrecords group by typeid");
        //return (List