I have the following chunk of header and footer code appearing in alot of methods. Is there a cleaner way of implementing this?

 Session sess = factory.openSession();
 Transaction tx;
 try {
     tx = sess.beginTransaction();
     //do some work
     ...
     tx.commit();
 }
 catch (Exception e) {
     if (tx!=null) tx.rollback();
     throw e;
 }
 finally {
     sess.close();
 }

The class in question is actually an EJB 2.0 SessionBean which looks like:

public class PersonManagerBean implements SessionBean {
    public void addPerson(String name) {
        // boilerplate
        // dostuff
        // boilerplate
    }

    public void deletePerson(Long id) {
        // boilerplate
        // dostuff
        // boilerplate
    }
}