문제가 발생한 코드는 Spring Reference에 있던 소스 코드입니다. public class ProductDaoImpl extends HibernateDaoSupport implements ProductDao { public Collection loadProductsByCategory(String category) throws DataAccessException, MyException { Session session = getSession(getSessionFactory(), false); try { List result = session.find( "from test.Product product where product.category=?", category, Hibernate.STRING); if (result == null) { throw new MyException("invalid