s*****p
发帖数: 5342 | 1 I user HibernateTemplate to use hibernate. However, I met a problem on
session lost or session close.Basically, I did:
Database relationship: 1 student -> n courses
public class Student {
String studentId;
Collection courses;
...
public Collection getCourses(){
return courses;
}
}
public class StudentDAO {
public Student getStudent(String studentId) {
return getHibernateTemplate().get(Student.class, studentId);
}
}
I can get Student object through StudentDAO.
Student student = (S | h**d
发帖数: 474 | 2 are you using lazy loading?
Your hibernate mapping file will help too
【在 s*****p 的大作中提到】
: I user HibernateTemplate to use hibernate. However, I met a problem on
: session lost or session close.Basically, I did:
: Database relationship: 1 student -> n courses
: public class Student {
: String studentId;
: Collection courses;
: ...
: public Collection getCourses(){
: return courses;
: }
| m******t
发帖数: 2416 | 3 The session is obtained in HibernateTemplate.get(), and released right away
before the method returns. You need to either access getCourses within the
same transaction, or use an OpenSessionInViewFilter/Interceptor - or disable
lazy loading for 'courses' in your mapping (which is usually not a good
idea).
【在 s*****p 的大作中提到】
: I user HibernateTemplate to use hibernate. However, I met a problem on
: session lost or session close.Basically, I did:
: Database relationship: 1 student -> n courses
: public class Student {
: String studentId;
: Collection courses;
: ...
: public Collection getCourses(){
: return courses;
: }
|
|
