hibernate,高階查詢之指定欄位查詢，並返回對應實體
阿新 • • 發佈：2019-01-24
String alias = “user_”; //查詢時的table別名
DetachedCriteria dc = DetachedCriteria.forClass(User.class,alias);
ProjectionList pList = Projections.projectionList();
pList.add(Projections.property(alias + “.” + “id”).as(“id”));
pList.add(Projections.property(alias + “.” + “name”).as(“name”));
pList.add(Projections.property(alias + “.” + “age”).as(“age”));
pList.add(Projections.property(alias + “.” + “sex”).as(“sex”));
dc.setProjection(pList);
dc.setResultTransformer(Transformers.aliasToBean(User.class));
resultList = memberService.findByDetached(dc).size();