?? userdao.java
字號:
package com.demo.hibernate.dao;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import com.demo.hibernate.beans.User;
import com.demo.hibernate.util.HibernateSessionFactory;
public class UserDAO {
public User getUser(String username) throws HibernateException {
Session session = null;
Transaction tx = null;
User user = null;
try {
session = HibernateSessionFactory.currentSession();
tx = session.beginTransaction();
Query query = session.createQuery("from User where username=?");
query.setString(0, username.trim());
user = (User)query.uniqueResult();
query = null;
tx.commit ();
}catch(HibernateException e){
throw e;
}finally{
if (tx!=null) {
tx.rollback();
}
HibernateSessionFactory.closeSession();
}
return user;
}
}
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