没明白你的意思呀, 你是说在别名前加个 item ?
sql="select sum(item_amount) as item_totalAmount,domainid from tlk_expectReimbursement where item_dept = '"+dept+"' and month(item_applyDate)= month('"+date+"') ";
然后获取值的时候用 : value = item.getItemValueAsDouble("item_totalAmount"); 么 ?