Java中使用hql,sql查询返回的list<Object> 转成需要的实体对象--方法讲解!

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需要将Query对象setResultTransformer：

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List list = session.createSQLQuery(sql).setResultTransformer(

Transformers.ALIAS_TO_ENTITY_MAP).list();

//此时，每个Object可以转换成一个Map

Map map = (Map) list.get(i);

map.get("PARENT_ID");? //这里的key 一定是?数据库对应的字段名才行

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例如：

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// 查询出数据??

? String hql = "select a.id as emergencyBasExeId,a.LEVEL as level,a.SEND_TIME as sender_time,a.NAME as name,a.CONTENT as content " +?

??? ",a.PROCESS_ID as processId,m.STATES as states,m.id as id,m.emergencyInfoSecondMgr.id as emergencySencondMgrId " +?

??? " from EmergencyInfoFirstExe a,? EventManage m where a.deleteFlag = 0 and a.id=m.emergencyInfoFirstExe.id ";?

? // 查询出数据list?

? List exeList = eventManageDao.notifyHqlPage(hql, pageNumber * pageSize, pageSize);?

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? // 返回所需要的数据List?

? List<EventInfoView> reList = new ArrayList<EventInfoView>();?

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? //map.get("PARENT_ID");? //这里的key 一定是 数据库对应的字段名才行??

? //对返回List的数据封装 ?

? for(Object exe : exeList){?

?? EventInfoView event = new EventInfoView();?

?? //此时，每个Object可以转换成一个Map??

?? Map map=(Map)exe;?

?? //然后可以使用map.get("属性名");即可取值?

?? event.setId(map.get("id").toString());?

?? event.setContent(map.get("content").toString());?

?? event.setEmergencyBasExeId(map.get("emergencyBasExeId").toString());?

?? event.setEmergencySencondMgrId(map.get("emergencySencondMgrId").toString());?

?? event.setEmergencyTitle(map.get("emergencyTitle").toString());?

?? event.setLevel(map.get("level").toString());?

?? event.setName(map.get("name").toString());?

?? event.setProcessId(map.get("processId").toString());?

?? event.setProcessName(map.get("processName").toString());?

?? event.setSender_time(map.get("sender_time").toString());?

?? event.setStates(map.get("states").toString());?

?? //....?

?? reList.add(event);?

? }?