for(Stall stall : stallList){
boolean flag = false;
for(DeliveryStallCommission deliveryStallCommission : riderList){
if(stall.getId() ==deliveryStallCommission.getStallId().longValue()){
flag=true;
break;
}
}
if(!flag){//表示stallList 的stall.getid值不存在于 riderList 的delivertStallCommission.getStallId
DeliveryStallCommission deliveryStallCommission = new DeliveryStallCommission();
deliveryStallCommission.setStallId(stall.getId().intValue());
deliveryStallCommission.setStallName(stall.getName());
riderList.add(deliveryStallCommission);
}
}