例如：

复制代码 代码如下:

HibernateTest.java

import onlyfun.caterpillar.*;

import net.sf.hibernate.*;

import net.sf.hibernate.cfg.*;

import java.util.*;

public class HibernateTest {

public static void main(String[] args) throws HibernateException {

SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();

Session session = sessionFactory.openSession();

List users = session.find("from User");

User updated = null;

for (ListIterator iterator = users.listIterator(); iterator.hasNext(); ) {

User user = (User) iterator.next();

if(updated == null)

updated = user;

System.out.println(user.getName() +

"ntAge: " + user.getAge() +

"ntSex: " + user.getSex());

}

updated.setName("justin");

session.flush();

users = session.find("from User");

session.close();

sessionFactory.close();

for (ListIterator iterator = users.listIterator(); iterator.hasNext(); ) {

User user = (User) iterator.next();

System.out.println(user.getName() +

"ntAge: " + user.getAge() +

"ntSex: " + user.getSex());

}

}

}

这个程序会显示数据表中的所有数据，并将数据表中的第一笔数据更新，一个执行的结果如下：

log4j:WARN No appenders could be found for logger (net.sf.hibernate.cfg.Environment).

log4j:WARN Please initialize the log4j system properly.

Hibernate: select user0_.user_id as user_id, user0_.name as name, user0_.sex as sex, user0_.age as age from USER user0_

caterpillar

Age: 28

Sex: M

momor

Age: 25

Sex: F

Bush

Age: 25

Sex: M

Becky

Age: 35

Sex: F

Hibernate: update USER set name=?, sex=?, age=? where user_id=?

Hibernate: select user0_.user_id as user_id, user0_.name as name, user0_.sex as sex, user0_.age as age from USER user0_

justin

Age: 28

Sex: M

momor

Age: 25

Sex: F

Bush

Age: 25

Sex: M

Becky

Age: 35

Sex: F

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