Question

我使用spring和hibernate创建一个Q和A站点，我在删除用户时遇到错误.... 错误说明...... rg.hibernate.QueryException：并未设置所有命名参数：[id] [DELETE FROM User WHERE user_id =：id]

此错误已经解决，现在我的代码就是参考......

控制器..........

@RequestMapping(value = "/delete", method = RequestMethod.GET)
public ModelAndView deleteUser(@RequestParam("id") int user_id ) {
        userservice.deleteUser(user_id);
    return new ModelAndView("jsp/AdminUsers");

}

D A O ........

public void deleteUser(int user_id) {  
    User user = (User) sessionFactory.getCurrentSession().load(User.class, user_id);
    if(null!=user){
        sessionFactory.getCurrentSession().delete(user);
    }
}

服务......

 public void deleteUser(int user_id) {  
        userDao.deleteUser(user_id);  
    }

查看网页网址...

/delete.html?id=${user.user_id}"

Answer 1

我猜你得到的错误是因为你正在运行createQuery("DELETE FROM User WHERE user_id =:id ")和executeUpdate而没有绑定:id参数。创建Query后，设置id参数，然后执行executeUpdate。此外，无需同时执行查询和以下delete。

试试这个：

Query query = sessionFactory.getCurrentSession().createQuery("DELETE FROM User WHERE user_id =:id ");
query.setInteger("id", userId);
query.executeUpdate();

org.hibernate.QueryException：并未设置所有命名参数：[id] [DELETE FROM User WHERE user_id =：id]

1 个答案: