操作blob与clob
clob
public void addArmynews(Armynews armynews, String clobstr) {
Session session =this.getSession();
Transaction tran = session.beginTransaction();
try{
armynews.setContent(Hibernate.createClob(" ")); //插入一个空的
session.save(armynews);
session.flush();
session.refresh(armynews,LockMode.UPGRADE);
SerializableClob sc = (SerializableClob)armynews.getContent();
Clob wrapclob = sc.getWrappedClob();
CLOB clob = (CLOB)wrapclob;
clob.putString(1,clobstr);
tran.commit();
}catch(Exception ex){
ex.printStackTrace();
tran.rollback();
}
}
public void editInform(Inform inform,String clobstr)
{
Session session =this.getSession();
Transaction tran = session.beginTransaction();
try{
Inform temp=(Inform) session.load(Inform.class,inform.getId());
temp.setContent(Hibernate.createClob(" "));
temp.setTime1(inform.getTime1());
temp.setTitle(inform.getTitle());
session.flush();
session.refresh(temp,LockMode.UPGRADE);
SerializableClob sc = (SerializableClob)temp.getContent();
Clob wrapclob = sc.getWrappedClob();
CLOB clob = (CLOB)wrapclob;
clob.putString(1,clobstr);
tran.commit();
}catch(Exception e){
tran.rollback();
System.out.print(e.getMessage()+"ok");
}
}
public Armynews findArmynewsID(Long id) {
Session session =this.getSession();
Armynews result=(Armynews) session.get(Armynews.class,id);
java.sql.Clob clob=result.getContent();
try{
String str=clob.getSubString(1, (int) clob.length());
result.setClobstr(str);
}catch(Exception e){
System.out.print("Error_clob:"+e.getMessage());
}
return result;
}
blob
映射成byte[]类型直接保存就是了
读取图
public ActionForward gethot(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
{
try{
BufferedOutputStream buffout = new BufferedOutputStream(response.getOutputStream());
List list=armynewsDAO.findHotArmynews();
Armynews armynews=new Armynews();
armynews=(Armynews) list.get(0);
byte[] buff = armynews.getPic();
buffout.write(buff);
buffout.close();
}catch(Exception e){
System.out.print(e.getMessage());
}finally{
}
return null;
}