org.hibernate.LazyInitializationException: could not initialize proxy - the owni

org.hibernate.LazyInitializationException: could not initialize proxy - the owni
Action:

Java code

public Cardinfo findById(Long id) {        Session session = HibernateSessionFactory.getSession();        Transaction tx = null;        Cardinfo cinfo = null;        try {            tx = session.beginTransaction();            cinfo = (Cardinfo) session.load(Cardinfo.class, id);            tx.commit();        } catch (RuntimeException re) {            tx.rollback();            log.error("==CardinfoServices findById failed==", re);        } finally {            session.close();        }        return cinfo;    }

Java code

String cidLoad = request.getParameter("cidLoad");            Cardinfo cardinfo = cardinfoSer.findById(new Long(cidLoad));            cardinfoForm.setCardid(new Long(cidLoad));            cardinfoForm.setCardname(cardinfo.getCardname());            cardinfoForm.setPhonenum(cardinfo.getPhonenum());            cardinfoForm.setCardstate(cardinfo.getCardstate());            cardinfoForm.setOtherinfo(cardinfo.getOtherinfo());            System.out.println("oid: "                    + cardinfo.getCardownerinfo().getOwnerid());            System.out.println("oid: "                    + cardinfo.getCardownerinfo().getOwnername());

错误指向这行：
cardinfoForm.setCardname(cardinfo.getCardname());

于是修改：

Java code

public Cardinfo findById(Long id) {        Session session = HibernateSessionFactory.getSession();        Transaction tx = null;        Cardinfo cinfo = null;        try {            tx = session.beginTransaction();            cinfo = (Cardinfo) session.load(Cardinfo.class, id);            Hibernate.initialize(cinfo);            tx.commit();        } catch (RuntimeException re) {            tx.rollback();            log.error("==CardinfoServices findById failed==", re);        } finally {            session.close();        }        return cinfo;    }

程序还是报错：org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed

错误指向：
System.out.println("oid: "
+ cardinfo.getCardownerinfo().getOwnername());

这该如何解决呢？


[解决办法]
查看下关于hibernate检索策略的文章
不知道你是怎么关联的
只设置关联级别的lazy=false不一定起作用 还要看对方类级别的lazy
[解决办法]
cardinfoForm.setCardname(cardinfo.getCardname());还是
cardinfo.getCardownerinfo().getOwnername());
两帖说的好像不统一啊
如果是第二句,就是关联的对象没有查到,为什么呢/
你cinfo = (Cardinfo) session.load(Cardinfo.class, id);
Hibernate.initialize(cinfo);根本没有作用,因为load加载了Cardinfo但它没有加载Cardownerinfo所以不可能得到ownername(many-to-one 如果lazy没有设置或是设为true)
你应该是Hibernate.initialize(cinfo.getOwnerinfo());

如果是第一句,不至于这样吧.查询它本身也会出错?LOAD先加载ID,如果只要ID的话,就不会再加载其它的.但如果有需要其它属性,应该也会查出的啊
[解决办法]
finally {
session.close();
}
你都把session关闭了，怎么会延迟加载呢？
[解决办法]

探讨

cardinfoForm.setCardname(cardinfo.getCardname());还是
cardinfo.getCardownerinfo().getOwnername());
两帖说的好像不统一啊
如果是第二句,就是关联的对象没有查到,为什么呢/
你cinfo = (Cardinfo) session.load(Cardinfo.class, id);
            Hibernate.initialize(cinfo);根本没有作用,因为load加载了Cardinfo但它没有加载Cardownerinfo所以不可能得到ownername(many-to-one 如果lazy没有设置或是设为true)

你应该是Hibernate.initialize(cinfo.getOwnerinfo());

如果是第一句,不至于这样吧.查询它本身也会出错?LOAD先加载ID,如果只要ID的话,就不会再加载其它的.但如果有需要其它属性,应该也会查出的啊

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