hibernate正向生成数据库表以及配置——TestStu.java

package cn.bdqn.studentInfo.test;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import cn.bdqn.studentInfo.entity.Student;
import cn.bdqn.studentInfo.entity.Teacher;
/**
 * 测试类
 * @author Administrator
 *
 */
public class testStu {
  private Configuration conf=null;
  private SessionFactory sessionFac=null;
  private Session session=null;
  private Transaction tx=null;
  /**
   * 正向创建数据表
   */
  @Test
  public void createDB(){
    Configuration conf=new Configuration()
                .configure();
    SchemaExport export =new SchemaExport(conf);
    export.create(true, true);
  }
  /**
   * 测试
   */
  @Test
  public void testMethod(){
    Session session=new Configuration().configure().buildSessionFactory().openSession();
    Transaction tx=session.beginTransaction();
    try{
    //创建两个学生对象
    Student student1=new Student();
    student1.setName("张同学");
    student1.setId(9);
    Student student2=new Student();
    student2.setName("王同学");
    student2.setId(10);
    //创建两个老师对象
    Teacher teacher1=new Teacher();
    teacher1.setId(9);
    teacher1.setName("武老师");
    Teacher teacher2=new Teacher();
    teacher2.setId(10);
    teacher2.setName("程老师");
    /**
     * 关联双方的关系
     */
    //告诉张同学，武老师和程老师都带着你的课
    student1.getTeachers().add(teacher1);
    student1.getTeachers().add(teacher2);
    //告诉王同学，武老师和程老师都带着你的课
    student2.getTeachers().add(teacher1);
    student2.getTeachers().add(teacher2);
    //告诉武老师，你现在带着王、张同学的课
    teacher1.getStudents().add(student1);
    teacher1.getStudents().add(student2);
    //告诉程老师，你现在带着王、张同学的课
    teacher2.getStudents().add(student1);
    teacher2.getStudents().add(student2);
    //添加
    session.save(student1);
    session.save(student2);
    /*session.save(teacher1);
    session.save(teacher2);*/
    tx.commit();
    }catch (Exception e) {
      tx.rollback();//添加失败时，进行回滚
      e.printStackTrace();
    }
  }
  /**
   * 关闭session
   */
  @After
  public void closeSession(){
    if(session!=null){
      session.close();
    }
  }
}