Hibernatecould not instantiate class.. from tuple] with root cause
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使用hibernate的过程中出现了这个问题,查询语句如下:
1 String hql = "select new GoodsBean(id, name, price, proPic, sales, updatetime, marketReferencePrice) from GoodsBean where bigTypeId = ? order by views desc"; 2 3 Query query = this.getCurrentSession().createQuery(hql); 4 query.setInteger(0, Integer.valueOf(bid)); 5 query.setFirstResult((p - 1) * pageSize); 6 query.setMaxResults(pageSize); 7 List<GoodsBean> goodsBeanList = (List<GoodsBean>)query.list();
运行到第七行时出现题目中的错误提示,最后在网上查询资料,说是可能是入参为null,我看了下数据库构造函数中的各参数,果真有一个参数的值为空,赋值后,正常了。
1 new GoodsBean(id, name, price, proPic, sales, updatetime, marketReferencePrice)
参考:https://blog.csdn.net/sunzhemin/article/details/9214435?locationnum=9
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