客户端增加扣减库存

src/main/java/com/chaozhanggui/system/cashierservice/dao/TbProductSkuMapper.java

@@ -29,4 +29,8 @@ public interface TbProductSkuMapper {
     TbProductSkuWithBLOBs selectByProduct(@Param("productId") Integer productId);
 
     void updateByskuId(@Param("productSkuId") Integer productSkuId,@Param("num") Integer num);
+
+    void updateByskuIdSub(@Param("skuId")Integer skuId, @Param("num")Integer num);
+
+    void updateStockNum(@Param("skuId") Integer skuId, @Param("num") Integer num);
 }

src/main/java/com/chaozhanggui/system/cashierservice/service/DutyService.java

@@ -13,10 +13,12 @@ import com.chaozhanggui.system.cashierservice.sign.CodeEnum;
 import com.chaozhanggui.system.cashierservice.sign.Result;
 import com.chaozhanggui.system.cashierservice.util.*;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.amqp.rabbit.annotation.RabbitHandler;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import redis.clients.jedis.Jedis;
 
 import java.math.BigDecimal;
 import java.util.*;
@@ -44,10 +46,13 @@ public class DutyService {
     private TbProductSkuMapper productSkuMapper;
     @Autowired
     private CloudPrinterService cloudPrinterService;
+    @Autowired
+    private RedisUtil redisUtil;
+
     @Transactional(rollbackFor = Exception.class)
     public void exect(String message) {
         try {
-            System.out.println("数据落地开始:"+message);
+            System.out.println("数据落地开始:" + message);
             JSONObject jsonObject = JSON.parseObject(message);
             String token = jsonObject.getString("token");
             String type = jsonObject.getString("type");
@@ -69,7 +74,7 @@ public class DutyService {
                 }
                 List<TbOrderDetail> list = orderDetailMapper.selectAllByOrderId(orderId);
 //                ShopUserDuty shopUserDuty = shopUserDutyMapper.selectByTokenId(tokenId);
-                ShopUserDuty shopUserDuty = shopUserDutyMapper.selectByShopIdAndTrade(shopId,day);
+                ShopUserDuty shopUserDuty = shopUserDutyMapper.selectByShopIdAndTrade(shopId, day);
 //                ShopUserDuty shopUserDuty = shopUserDutyMapper.selectByTokenIdAndTradeDay(tokenId, day, orderInfo.getShopId());
                 BigDecimal cashAmount = BigDecimal.ZERO;
 
@@ -95,7 +100,8 @@ public class DutyService {
                             shopUserDutyDetail.setProductId(orderDetail.getProductId());
                             shopUserDutyDetail.setProductName(orderDetail.getProductName());
                             detaiList.add(shopUserDutyDetail);
-                            productSkuMapper.updateByskuId(orderDetail.getProductSkuId(),orderDetail.getNum());
+//                            productSkuMapper.updateByskuId(orderDetail.getProductSkuId(), orderDetail.getNum());
+                            subInventory(shopId,orderDetail.getProductSkuId(),orderDetail.getNum());
                         }
                         if (detaiList.size() > 0) {
                             shopUserDutyDetailMapper.batchInsert(detaiList);
@@ -135,18 +141,19 @@ public class DutyService {
                                 detaiList.add(shopUserDutyDetail);
 
                             }
-                            productSkuMapper.updateByskuId(orderDetail.getProductSkuId(),orderDetail.getNum());
+//                            productSkuMapper.updateByskuId(orderDetail.getProductSkuId(), orderDetail.getNum());
+                            subInventory(shopId,orderDetail.getProductSkuId(),orderDetail.getNum());
                         }
                         if (detaiList.size() > 0) {
                             shopUserDutyDetailMapper.batchInsert(detaiList);
                         }
                     }
-                    ShopUserDutyPay shopUserDutyPay = shopUserDutyPayMapper.selectByDuctIdAndType(shopUserDuty.getId(),orderInfo.getPayType());
+                    ShopUserDutyPay shopUserDutyPay = shopUserDutyPayMapper.selectByDuctIdAndType(shopUserDuty.getId(), orderInfo.getPayType());
-                    if (Objects.nonNull(shopUserDutyPay)){
+                    if (Objects.nonNull(shopUserDutyPay)) {
                         shopUserDutyPay.setAmount(orderInfo.getOrderAmount().add(shopUserDutyPay.getAmount()));
                         shopUserDutyPayMapper.updateByPrimaryKeySelective(shopUserDutyPay);
-                    }else {
+                    } else {
-                        shopUserDutyPay=new ShopUserDutyPay();
+                        shopUserDutyPay = new ShopUserDutyPay();
                         shopUserDutyPay.setDutyId(shopUserDuty.getId());
                         shopUserDutyPay.setType(orderInfo.getPayType());
                         shopUserDutyPay.setAmount(orderInfo.getOrderAmount());
@@ -204,7 +211,7 @@ public class DutyService {
                         shopUserDutyDetail.setProductId(orderDetail.getProductId());
                         shopUserDutyDetail.setProductName(orderDetail.getProductName());
                         detaiList.add(shopUserDutyDetail);
-                        productSkuMapper.updateByskuId(orderDetail.getProductSkuId(),orderDetail.getNum());
+                        productSkuMapper.updateByskuId(orderDetail.getProductSkuId(), orderDetail.getNum());
                     }
                     if (detaiList.size() > 0) {
                         shopUserDutyDetailMapper.batchInsert(detaiList);
@@ -244,35 +251,45 @@ public class DutyService {
                             detaiList.add(shopUserDutyDetail);
 
                         }
-                        productSkuMapper.updateByskuId(orderDetail.getProductSkuId(),orderDetail.getNum());
+                        productSkuMapper.updateByskuId(orderDetail.getProductSkuId(), orderDetail.getNum());
                     }
 
                     if (detaiList.size() > 0) {
                         shopUserDutyDetailMapper.batchInsert(detaiList);
                     }
                 }
-                ShopUserDutyPay shopUserDutyPay = shopUserDutyPayMapper.selectByDuctIdAndType(shopUserDuty.getId(),orderInfo.getPayType());
+                ShopUserDutyPay shopUserDutyPay = shopUserDutyPayMapper.selectByDuctIdAndType(shopUserDuty.getId(), orderInfo.getPayType());
-                if (Objects.nonNull(shopUserDutyPay)){
+                if (Objects.nonNull(shopUserDutyPay)) {
                     shopUserDutyPay.setAmount(orderInfo.getOrderAmount().add(shopUserDutyPay.getAmount()));
                     shopUserDutyPayMapper.updateByPrimaryKeySelective(shopUserDutyPay);
-                }else {
+                } else {
-                    shopUserDutyPay=new ShopUserDutyPay();
+                    shopUserDutyPay = new ShopUserDutyPay();
                     shopUserDutyPay.setDutyId(shopUserDuty.getId());
                     shopUserDutyPay.setType(orderInfo.getPayType());
                     shopUserDutyPay.setAmount(orderInfo.getOrderAmount());
                     shopUserDutyPayMapper.insert(shopUserDutyPay);
                 }
-            }else{
+            } else {
-                if (type.equals("close")){
+                if (type.equals("close")) {
                     JSONObject tokenJson = TokenUtil.parseParamFromToken(tbToken.getToken());
                     Integer shopId = tokenJson.getInteger("shopId");
                     Integer staffId = tokenJson.getInteger("staffId");
-                    cloudPrinterService.handoverprintData(token,day,"");
+                    cloudPrinterService.handoverprintData(token, day, "");
-                    shopUserDutyMapper.updateStatusByTokenId(day,shopId,staffId);
+                    shopUserDutyMapper.updateStatusByTokenId(day, shopId, staffId);
                 }
             }
         } catch (Exception e) {
             e.getMessage();
         }
     }
+
+    private void subInventory(Integer shopId, Integer skuId, Integer num) {
+        String result = redisUtil.seckill(RedisCst.PRODUCT + shopId.toString() + ":" + skuId.toString(), num.toString());
+        TbProductSku tbProductSku = productSkuMapper.selectByPrimaryKey(skuId);
+        if (num > tbProductSku.getStockNumber()) {
+            productSkuMapper.updateStockNum(skuId,num);
+        } else {
+            productSkuMapper.updateByskuIdSub(skuId, num);
+        }
+    }
 }

src/main/java/com/chaozhanggui/system/cashierservice/util/RedisCst.java

@@ -13,4 +13,5 @@ public class RedisCst {
     public static final String ONLINE_USER = "ONLINE:USER";
     public static final String CART = "CZG:CART:";
 
+    public static final Object PRODUCT = "PRODUCT:";
 }

src/main/java/com/chaozhanggui/system/cashierservice/util/RedisUtil.java

@@ -577,4 +577,43 @@ public class RedisUtil {
         }
         return 0L ;
     }
+
+    String secKillScript =  "local prodid=KEYS[1];\r\n" +
+            "local usernum=KEYS[2];\r\n" +
+            "local num= redis.call(\"get\" ,prodid);\r\n" +
+            "if tonumber(num)<tonumber(usernum) then \r\n" +
+            "   return 0;\r\n" +
+            "end\r\n" +
+            "if tonumber(num)<=0 then \r\n" +
+            "   return 0;\r\n" +
+            "else \r\n" +
+            "   redis.call(\"DECRBY\",prodid,tonumber(usernum));\r\n" +
+            "end\r\n" +
+            "return 1";
+    public String seckill(String key,String num) {
+        Jedis jedis = null;
+        try {
+            if (StringUtils.isEmpty(key)) {
+                return REDIS_FAILED+"";
+            }
+            // 从jedis池中获取一个jedis实例
+            jedis = pool.getResource();
+            if (database!=0) {
+                jedis.select(database);
+            }
+            Object result = jedis.eval(secKillScript, Arrays.asList( key,num), new ArrayList<>());
+            String reString = String.valueOf(result);
+            return reString;
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            // 释放对象池，即获取jedis实例使用后要将对象还回去
+            // 释放对象池，即获取jedis实例使用后要将对象还回去
+            if (jedis != null) {
+                jedis.close();
+            }
+        }
+        return REDIS_FAILED+"";
+    }
 }

src/main/resources/mapper/TbProductSkuMapper.xml

@@ -336,8 +336,14 @@
     <update id="updateByskuId">
       update tb_product_sku set real_sales_number = real_sales_number + #{num} where id = #{productSkuId}
     </update>
+  <update id="updateByskuIdSub">
+     update tb_product_sku set stock_number = stock_number - #{num},real_sales_number = real_sales_number + #{num} where id = #{skuId}
+  </update>
+  <update id="updateStockNum" parameterType="java.lang.Integer">
+     update tb_product_sku set stock_number = 0 ,real_sales_number = real_sales_number + #{num} where id = #{skuId}
+  </update>
 
-    <select id="selectByShopIdAndProductIdAndSpec" resultMap="ResultMapWithBLOBs">
+  <select id="selectByShopIdAndProductIdAndSpec" resultMap="ResultMapWithBLOBs">
     select * from tb_product_sku where shop_id=#{shopId} and product_id=#{productId}
 
     <if test="spec != null and spec !=''">