13.13.13.13.13.13.13.

13.13.13.13.13.13.13.13.13.13.13.13.

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3 楼 taeky 2010-03-08  

TheMatrix 写道

Teacher teacher = em.find(Teacher.Class, 1);

  

2 楼 TheMatrix 2010-03-07  

Teacher teacher = em.find(Teacher.Class, 1);

1 楼 TheMatrix 2010-03-07  

import javax.persistence.EntityManager;   
import javax.persistence.EntityManagerFactory;   
import javax.persistence.Persistence;   
  
import org.junit.BeforeClass;   
import org.junit.Test;   
  
public class ManyToManyTest {   
  
    @BeforeClass  
    public static void setUpBeforeClass() throws Exception {   
    }
    
    @Test  
    public void save() {
        EntityManagerFactory factory = Persistence.createEntityManagerFactory("forthefuture");
        EntityManager em = factory.createEntityManager();
        em.getTransaction().begin();
        Student student = new Student();
        student.setName("Michael");
        Teacher teacher = new Teacher();
        teacher.setName("Tony");
        student.getTeachers().add(teacher);
        em.persist(student);
        em.getTransaction().commit();
        em.close();
        factory.close();   
    }   
  
}