對象實體被覆蓋

 //標物配置 public Vector getObjMaterReByPid(String pids) throws ServiceException { DAORefMaterReceive daoreceive = (DAORefMaterReceive) getDao(DAORefMaterReceive.DAO_NAME); Vector result = new Vector() ; String[] parentIDs = pids.split(",") ; try{ for(int i=0 ;i<parentIDs.length ;i++ ) { ObjMaterReceive materReceive = daoreceive. selectByPid(Integer.parseInt(parentIDs[i])) ; if(materReceive.getPlandes().equals("") || null==materReceive.getPlandes()) { }else { String[] plandes = materReceive.getPlandes().split("/") ; String[] receiveCons = materReceive.getReceiveCons().split("/") ; for(int j=0 ;j<plandes.length ;j++ ) { String receiveCon = "" ; if( receiveCons.length<=j ) { receiveCon = "" ; }else { receiveCon = receiveCons[j] ; } materReceiven.setPlandes(plandes[j]) ; materReceive.setReceiveCons(receiveCon) ; result.add(materReceive) ; } } } }catch(DaoException e) { e.printStackTrace() ; } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } return result ; }

這樣導致的結果，

 

兩個對象的實體一樣，而且以後一個爲準。

更改後:

//標物配置 public Vector getObjMaterReByPid(String pids) throws ServiceException { DAORefMaterReceive daoreceive = (DAORefMaterReceive) getDao(DAORefMaterReceive.DAO_NAME); Vector result = new Vector() ; String[] parentIDs = pids.split(",") ; try{ for(int i=0 ;i<parentIDs.length ;i++ ) { ObjMaterReceive materReceive = daoreceive. selectByPid(Integer.parseInt(parentIDs[i])) ; if(materReceive.getPlandes().equals("") || null==materReceive.getPlandes()) { }else { String[] plandes = materReceive.getPlandes().split("/") ; String[] receiveCons = materReceive.getReceiveCons().split("/") ; for(int j=0 ;j<plandes.length ;j++ ) { ObjMaterReceive materReceivenew = new ObjMaterReceive() ; BeanUtils.copyProperties(materReceivenew, materReceive) ; String receiveCon = "" ; if( receiveCons.length<=j ) { receiveCon = "" ; }else { receiveCon = receiveCons[j] ; } materReceivenew.setPlandes(plandes[j]) ; materReceivenew.setReceiveCons(receiveCon) ; result.add(materReceivenew) ; } } } }catch(DaoException e) { e.printStackTrace() ; } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } return result ; }

每次加給result之前都是一個新NEW出的對象，這樣得出的結果如下：

 

BeanUtils.copyProperties(materReceivenew, materReceive) ; 這個方法的作用是對象複製，