initdata.java

尚学堂科技_王勇_JAVA视频教程_Hibernate源代码及重要说明

package com.bjsxt.hibernate;

import java.text.SimpleDateFormat;
import java.util.Date;

import org.hibernate.Session;

public class InitData {

	public static void main(String[] args) {
			Session session = HibernateUtils.getSession();

			try {
				session.beginTransaction();

				for(int i=0; i<10; i++){
				
					Classes classes = new Classes();
					classes.setName("班级"+i);
					session.save(classes);
					
					for(int j=0; j<10; j++){
						Student student = new Student();
						student.setName("班级"+i+"的学生"+j);
						
						//在内存中建立由student指向classes的引用
						student.setClasses(classes);
						session.save(student);
					}
				}
				session.getTransaction().commit();
			} catch (Exception e) {
				e.printStackTrace();
				session.getTransaction().rollback();
			} finally{
				HibernateUtils.closeSession(session);
			}
		}	
}