delete方法(Hibernate)

Question

@Test
public void DeleteStreetWithWhere(){
Configuration config=new Configuration().configure();
SessionFactory sf=config.buildSessionFactory();
Session session=sf.openSession();
Transaction tr=session.beginTransaction();
String hql="from Street where id=1 ";
try {
session.delete(hql);

        tr.commit();
        System.out.println("street delete sucessful!");
    } catch (Exception e) {
        e.printStackTrace();
        tr.rollback();
        System.out.println("street delete failued!");
    }finally{
        session.close();
    }
}

为什么String hql="from Street where id=1 "; 这样不行，但看了网上都是这么做的呀，运行报如下错误:

org.hibernate.MappingException: Unknown entity: java.lang.String

Answer 1

你用
[code="java"]session.createQuery("delete from Street where id=1").executeUpdate();[/code]