Hibernate中关于多对多关联表中数据的删除问题

原因：与其他表有多对多关系

解决方法：/**

         * 多对多 被控方删除(可以删除中间表记录)

       * 下面例子中，Teacher和Cours有多对多关系，如果要删除一个Teacher

       * 则要按以下方法执行

         */

        public void testDeleteByInverse2() {

                String id = "402881ee175f04be01175f04c06c0002";

                Session session = HibernateSessionFactory.getSession();

                session.beginTransaction();

 

                Teacher t1 = (Teacher) session.get(Teacher.class, id);

              //先把Course中有t1的记录把t1移除

                Set<Course> cs = t1.getCourses();

                for (Course c : cs) {

                        c.getTeachers().remove(t1);

                }

              //如果hibernate报错，则加上下面两句试试

              //session. getTransaction().commit();

              //session.beginTransaction();

 

                session.delete(t1);

                session.getTransaction().commit();

                session.close();

        }