Question

SSH2修改功能怎么写，我按照这模式写update方法，但是实现不了

ACTION里添加等功能代码
public String gonggaoAdd()
{
TGonggao gonggao=new TGonggao();
gonggao.setGonggaoTitle(gonggaoTitle);
gonggao.setGonggaoContent(gonggaoContent);
gonggao.setGonggaoData(new Date().toLocaleString());
gonggaoDAO.save(gonggao);
this.setMessage("公告添加成功");
this.setPath("gonggaoMana.action");
return "succeed";
}

public String gonggaoMana()
{
List gonggaoList =gonggaoDAO.findAll();
Map request=(Map)ServletActionContext.getContext().get("request");
request.put("gonggaoList", gonggaoList);
return ActionSupport.SUCCESS;
}

public String gonggaoDel()
{
TGonggao gonggao=gonggaoDAO.findById(gonggaoId);
gonggaoDAO.delete(gonggao);
this.setMessage("公告删除完毕");
this.setPath("gonggaoMana.action");
return "succeed";
}
DAO文件中

public void save(TGonggao transientInstance)
{
log.debug("saving TGonggao instance");
try
{
getHibernateTemplate().save(transientInstance);
log.debug("save successful");
} catch (RuntimeException re)
{
log.error("save failed", re);
throw re;
}
}

public void delete(TGonggao persistentInstance)
{
log.debug("deleting TGonggao instance");
try
{
getHibernateTemplate().delete(persistentInstance);
log.debug("delete successful");
} catch (RuntimeException re)
{
log.error("delete failed", re);
throw re;
}
}

public TGonggao findById(java.lang.Integer id)
{
log.debug("getting TGonggao instance with id: " + id);
try
{
TGonggao instance = (TGonggao) getHibernateTemplate().get(
"com.model.TGonggao", id);
return instance;
} catch (RuntimeException re)
{
log.error("get failed", re);
throw re;
}
}

Answer 1

Dao文件中
public boolean update(TGonggao transientInstance) {
try {
getHibernateTemplate().saveOrUpdate(transientInstance);
log.debug("update successful");
return true;
} catch (RuntimeException re) {
log.error("update failed", re);
return false;
}
}

Answer 2

!hibernate3.3
transaction.commit()