我的IT日子

測試      @Test     public void testAdd() throws Exception {                           UserManager um = new UserManager();         User u = new User();         u.setUsername("b4");         u.

hibernate 3.3 做小例子时，提示下面信息，如何解决？ org.hibernate.hql.ast.QuerySyntaxException: user is not mapped [select COUNT(*) from user u where u.username = :username]     at org.hibernate.hql.ast.util.Ses