@Servicepublic class CartServiceImpl implementsCartService {private static final String CART="Cart_";

@AutowiredprivateRedisTemplate redisTemplate;

@AutowiredprivateSkuFeign skuFeign;

@AutowiredprivateSpuFeign spuFeign;/*** 添加购物车

*@paramskuId

*@paramnum*/@Overridepublic voidadd(String skuId, Integer num,String username) {/*** 1)查询redis中的数据

* 2)如果redis中已经有了，则追加数量，重新计算金额

* 3)如果没有，将商品添加到缓存*/OrderItem orderItem= (OrderItem)redisTemplate.boundHashOps(CART+username).get(skuId);//从redis中取值if (orderItem != null){//存在，刷新购物车

orderItem.setNum(orderItem.getNum()+num);

orderItem.setMoney(orderItem.getNum()*orderItem.getPrice());

orderItem.setPayMoney(orderItem.getNum()*orderItem.getPrice());

}else{//不存在，新增购物车

Result skuResult =skuFeign.findById(skuId);

Sku sku=skuResult.getData();

Spu spu=spuFeign.findByspuId(sku.getSpuId());//将SKU转换成OrderItem

orderItem = this.sku2OrderItem(sku,spu,num);

}//存入redis

redisTemplate.boundHashOps(CART+username).put(skuId,orderItem);//往redis中存值

}//sku转换为orderItem

privateOrderItem sku2OrderItem(Sku sku, Spu spu, Integer num) {

OrderItem orderItem= newOrderItem();

orderItem.setSpuId(sku.getSpuId());

orderItem.setSkuId(sku.getId());

orderItem.setName(sku.getName());

orderItem.setPrice(sku.getPrice());

orderItem.setNum(num);

orderItem.setMoney(num*orderItem.getPrice()); //单价*数量

orderItem.setPayMoney(num*orderItem.getPrice()); //实付金额

orderItem.setImage(sku.getImage());

orderItem.setWeight(sku.getWeight()*num); //重量=单个重量*数量//分类ID设置

orderItem.setCategoryId1(spu.getCategory1Id());

orderItem.setCategoryId2(spu.getCategory2Id());

orderItem.setCategoryId3(spu.getCategory3Id());returnorderItem;

}

}