分类: Java
2008-03-24 20:39:07
#操作对象User.java package com.biaoflying; public class User { private Integer id,age; private String name; public Integer getId(){ return id; } public void setId(Integer id){ this.id=id; } public String getName(){ return name; } public void setName(String name){ this.name=name; } public Integer getAge(){ return age; } public void setAge(Integer age){ this.age=age; } } |
#数据存取的接口及其实现类 #IUserDAO.java package com.biaoflying; public interface IUserDAO { public void insert(User user); public User find(Integer id); } #UserDAO.java package com.biaoflying; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; public class UserDAO implements IUserDAO { private SessionFactory sessionFactory; public UserDAO(){ } public UserDAO(SessionFactory sessionFactory){ this.sessionFactory=sessionFactory; } public void setSessionFactory( SessionFactory sessionFactory){ this.sessionFactory=sessionFactory; } public void insert(User user){ Session session=sessionFactory.openSession(); Transaction tx=session.beginTransaction(); session.save(user); tx.commit(); session.close(); } public User find(Integer id){ Session session=sessionFactory.openSession(); User user=(User)session.get(User.class,id); session.close(); return user; } } |
#主程序 public class HibernateDemo { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Configuration config= new Configuration().configure(); SessionFactory sessionFactory= config.buildSessionFactory(); IUserDAO userDAO=new UserDAO(sessionFactory); User user=new User(); //user.setId(new Integer(1)); user.setName("abio"); user.setAge(new Integer(22)); userDAO.insert(user); user=userDAO.find(new Integer(1)); System.out.println("name: "+user.getName()); } } |
#User.hbm.xml定义User类到table行的映射 PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" ""> #hibernate.cfg.xml "-//Hibernate/Hibernate Configuration DTD 3.0//EN" ""> true org.hibernate.dialect.MySQLDialect com.mysql.jdbc.Driver jdbc:mysql://localhost/demo root 602436 #附:.xml文件的存放位置 C:\javawork\workspace\HibernateDemo\bin\hibernate.cfg.xml C:\javawork\workspace\HibernateDemo\bin\com\biaoflying\User.hbm.xml |
#主程序 package com.biaoflying; import org.springframework.context.ApplicationContext; import org.springframework.context. support.FileSystemXmlApplicationContext; public class SpringHibernateDemo { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub ApplicationContext context= new FileSystemXmlApplicationContext( "beans-config.xml"); IUserDAO userDAO= (IUserDAO)context.getBean("userDAO"); User user=new User(); user.setName("caterpillar"); user.setAge(new Integer(22)); userDAO.insert(user); user=userDAO.find(new Integer(1)); System.out.println("name: "+user.getName()); } } |