@Test
public?void?testSelectClauseReturnMay()
{
????String?hql?=?"?select?new?map(s.name?as?name,s.tel?as?tel,s.address?as?address)?from?Seller?s";
	
	Query?query?=?session.createQuery(hql);
	List<Map>?maps?=?query.list();
	for(Map?map?:?maps)?{
		System.out.println("name:"+map.get("0")
			+",?tel:"+map.get("1")
			+",?address:"+map.get("2"));
	}
	
	System.out.println("###########");
	//以別名獲取信息
	for(Map?map?:?maps)?{
		System.out.println("name:"+map.get("name")
			+",?tel:"+map.get("tel")
			+",?address:"+map.get("address"));
	}
}
控制臺輸出：
name:null,?tel:null,?address:null
name:null,?tel:null,?address:null
name:null,?tel:null,?address:null
name:null,?tel:null,?address:null
###########
name:A服裝店,?tel:13000000000,?address:中國北京××區(qū)
name:B數(shù)碼店,?tel:15800000000,?address:中國浙江杭州市××區(qū)
name:C電器店,?tel:13012341234,?address:中國廣東深圳市××區(qū)
name:D書店,?tel:18600000000,?address:中國陜西西安市××區(qū)

為什么用別名就有數(shù)據(jù)輸出了？求解?。?/p>