使用annotation配置hibernate（3）：多对多关系配置

数据库表结构

Student.java

@Entity
@Table(name = "student")
public class Student {
    @Id
    @Column(name = "id")
    @GenericGenerator(name = "generator",strategy = "native")
    @GeneratedValue(generator = "generator")
    private int id;
    
    @Column(name = "name")
    private String name;
    
    
    @ManyToMany(cascade = CascadeType.ALL,fetch = FetchType.LAZY)
    @JoinTable(name = "student_course",
               joinColumns= {@JoinColumn(name = "student_id")},
               inverseJoinColumns = {@JoinColumn(name = "course_id")})
    private Set<Course> courses = new HashSet<Course>();
    
}

Course.java

@Entity
@Table(name = "course")
public class Course {
    @Id
    @Column(name = "id")
    @GenericGenerator(name = "generator",strategy = "native")
    @GeneratedValue(generator = "generator")
    private int id;
    
    @Column(name = "coursename")
    private String courseName;
    
    @ManyToMany(cascade = CascadeType.ALL,fetch = FetchType.LAZY,mappedBy = "courses")
    private Set<Student> students = new HashSet<Student>();
    
}