[appfuse-user] NullPointerException when try to retrieve data

[Tony.Cesc]

Hi,
I am newbie. I am trying to write new login function which is not used
acegi. 
- Wrote LoginAction class
    public String login() {
        System.out.println(person.getUsername());
        System.out.println(person.getPassword());
        PersonDaoHibernate pdh = new PersonDaoHibernate();
        boolean valid = pdh.authentication(person.getUsername(),
                person.getPassword());
        System.out.println(valid);

        return SUCCESS;
    }

- In LoginAction, I have login fuction which is call authentication function
in PersonDaoHibernate Class
    public boolean authentication(String username, String password) {
        System.out.println(username);
        System.out.println(password);
        try {
            List lists = getHibernateTemplate().find(
                    "from Person where username=?", username);
            if (lists.isEmpty()) {
                return false;
            } else {
                return true;
            }
        } catch (Exception ex) {
            System.out.println(ex.toString());

            return false;
        }
    }

The result is
user1
123
java.lang.NullPointerException

Thanks for any suggestion.

Regard,
Tony
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