UC知道在线等关于MyEclipse+struts+Hibernate查询SQL错误,那位达人告诉下?急急急
来源：百度知道 编辑：UC知道 时间：2024/06/01 01:45:24
public class UserinfoDaoImpl {
public boolean dbcon(String a, String b) {
try {
Session sess=HibernateSessionFactory.currentSession();
String sql = "select * from Userinfo as u where u.loginname='"+a+"' and u.password='"+b+"'";
System.out.println(sql);
Query q=sess.createSQLQuery(sql);
List list=q.list();
System.out.println(list.toString());
return false;
} catch (Exception e) {
System.out.println(e);
return false;
} finally {
}
}
public static void main(String args[]){
UserinfoDaoImpl dt=new UserinfoDaoImpl ();
boolean flag=dt.dbcon("user","user");
System.out.println(flag);
}
}
错误如下:
org.hibernate.QueryException:addEntity() or addScalar() must be called on a sql query before executing th
public boolean dbcon(String a, String b) {
try {
Session sess=HibernateSessionFactory.currentSession();
String sql = "select * from Userinfo as u where u.loginname='"+a+"' and u.password='"+b+"'";
System.out.println(sql);
Query q=sess.createSQLQuery(sql);
List list=q.list();
System.out.println(list.toString());
return false;
} catch (Exception e) {
System.out.println(e);
return false;
} finally {
}
}
public static void main(String args[]){
UserinfoDaoImpl dt=new UserinfoDaoImpl ();
boolean flag=dt.dbcon("user","user");
System.out.println(flag);
}
}
错误如下:
org.hibernate.QueryException:addEntity() or addScalar() must be called on a sql query before executing th
试下这个 改了两句
String sql = "from Userinfo as u where u.loginname='"+a+"' and u.password='"+b+"'";
Query q=sess.createQuery(sql);
另外最好关闭session 不然再次检索会报错
SessionFactory.closeSession();
finally {
if (session != null) {
try {
session.close();
} catch (HibernateException e) {
System.err.println("Hibernate Exception" + e.getMessage());
throw new RuntimeException(e);
}
}
}
就象楼上所说的
你既然使用了hibernate你为什么不用HQL语言呢
再者你这个返回一个UserInfo表的PO对象不就行了,还用个LIST,你不觉的这样很浪费吗??