隨筆檔案

public class EmployUnitBaseInfo
{???
?
??? private long ID; //用人單位系統(tǒng)編號---邏輯主鍵
??? private String unitCode; //用人單位代號--業(yè)務(wù)主鍵
}
1、??? 使用邏輯主鍵，分頁比較方便
2、??? 有可能unitcode會(huì)改變，用id可以保證當(dāng)unitcode改變時(shí)，這個(gè)實(shí)體還存在



在頁面上必須返回workpost + demandid，，
pojo 中的demand類如下：只有以下屬性的setter和getter
??? private String usedNeedNum;
??? private int unitId;
??? private String demandInfo;
　private long ID;
??? private String needNum;
??? private String position;
必須再添加一個(gè)屬性demandInfo,
而在另一個(gè)畢業(yè)生申報(bào)中又要如圖上操作，，如何在service層向頁面層傳遞這些信息（測試程序員（剩２需求數(shù)））
　public class DemandServiceImpl
??? extends BaseServiceImpl implements DemandService{
??? public List getDemandList(int unitId)
??? {
????????? long demandId;
????????? int needNum;
????????? int usedNeedNum;
????????? int lastNum;
?????????
????????? String demandInfo;
????????? TRealDemandDAOImpl dao = (TRealDemandDAOImpl) this.getBaseDAO();
????????? List list = dao.getSpareDemandByUnitId(unitId);
????????? Iterator it = list.iterator();
????????? while(it.hasNext())
????????? {
????????????? TRealDemand demand = (TRealDemand) it.next();
????????????? demandId = demand.getID();
????????????? needNum =? Integer.parseInt(demand.getNeedNum());?
????????????? usedNeedNum = Integer.parseInt(demand.getUsedNeedNum());
????????????? if(needNum>usedNeedNum)
????????????? {
????????????????? lastNum = usedNeedNum-needNum;
????????????????? demandInfo = demand.getPosition()+" 剩 " + lastNum +" 需求數(shù) ";
????????????? }
?????????????
????????? }
????????? return list;
??? }
}

在action層再通過以下代碼向頁面?zhèn)鬟f數(shù)據(jù)：

DemandService demandService = (DemandService) this.getBean("DemandService");
?request.setAttribute("demandList",demandService.findDemandListByUnitId(unitInfo.getID()));



４、注意DemandServiceImpl 是實(shí)現(xiàn)類，DemandService 是interface
DemandService demandService = (DemandService) this.getBean("DemandService");
和DemandServiceImpl demandService = (DemandServiceImpl) this.getBean("DemandService");

雖然兩個(gè)的操作一樣，但是demandService是接口但可以執(zhí)行相應(yīng)的操作，起到黑箱子的作用。

5、記得在action中添加一個(gè)實(shí)體時(shí)，要通過idcard取得sex和birthday的屬性加到內(nèi)存中（表相對應(yīng)的pojo）