different object with the same identifier value wa

Question

INFO com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:114) - modifyById method is running!
ERROR com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:121) - org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]
org.hibernate.HibernateException: 修改数据出错！a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]
[b]问题补充：[/b]
INFO com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:114) - modifyById method is running!
ERROR com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:121) - org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]
org.hibernate.HibernateException: 修改数据出错！a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]

怎么修改，
是下面的方法错了么？
public boolean modifyById(String id, Object o)throws Exception {
boolean flag=false;
log.info("modifyById method is running!");
Transaction tran = null;
try {
tran = session.beginTransaction();
this.session.update(o);
flag=true;
} catch (HibernateException e) {
log.error(e.toString());

flag=false;
throw new HibernateException("修改数据出错！"+e.getMessage()) ;
}
return flag;

}

[b]问题补充：[/b]
INFO com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:114) - modifyById method is running!
ERROR com.c35.paris.dao.impl.UserDAOImpl.modifyById(UserDAOImpl.java:121) - org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]
org.hibernate.HibernateException: 修改数据出错！a different object with the same identifier value was already associated with the session: [com.c35.paris.vo.User#8aa3b3671d8ebd4c011d8ec457980003]
问题补充：

怎么修改，
是下面的方法错了么？
public boolean modifyById(String id, Object o)throws Exception {
boolean flag=false;
log.info("modifyById method is running!");
Transaction tran = null;
try {
tran = session.beginTransaction();
this.session.update(o);
flag=true;
} catch (HibernateException e) {
log.error(e.toString());

flag=false;
throw new HibernateException("修改数据出错！"+e.getMessage()) ;
}
return flag;

}

Answer 1

[quote]a different object with the same identifier value was already associated with the session[/quote]
提示很明显了.
你的Session已经加载了一个相同ID的对象了. 直接UPdate,再查询.