新增下单库存预警消息推送

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

@@ -2,6 +2,8 @@ package com.chaozhanggui.system.cashierservice.dao;
 
 import com.chaozhanggui.system.cashierservice.entity.TbUserShopMsg;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
 import org.springframework.stereotype.Component;
 
 @Component
@@ -18,4 +20,7 @@ public interface TbUserShopMsgMapper {
     int updateByPrimaryKeySelective(TbUserShopMsg record);
 
     int updateByPrimaryKey(TbUserShopMsg record);
+
+    @Select("select * from tb_user_shop_msg where shop_id=#{shopId}")
+    TbUserShopMsg selectByShopId(@Param("shopId") String shopId);
 }

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

@@ -23,6 +23,7 @@ import org.springframework.transaction.annotation.Transactional;
 
 import java.math.BigDecimal;
 import java.util.*;
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -64,10 +65,19 @@ public class OrderService {
     @Autowired
     RabbitProducer producer;
 
+    private final WechatUtil wechatUtil;
+
+    private final TbUserShopMsgMapper tbUserShopMsgMapper;
+
 
     private static ConcurrentHashMap<String, HashSet<Integer>> codeMap = new ConcurrentHashMap<>();
     private static ConcurrentHashMap<String, HashSet<String>> userMap = new ConcurrentHashMap<>();
 
+    public OrderService(WechatUtil wechatUtil, TbUserShopMsgMapper tbUserShopMsgMapper) {
+        this.wechatUtil = wechatUtil;
+        this.tbUserShopMsgMapper = tbUserShopMsgMapper;
+    }
+
     @Transactional(rollbackFor = Exception.class)
     public Result createCart(String masterId, String productId, String shopId, Integer skuId, Integer number,
                              String userId, String clientType, Integer cartId, String isGift, String isPack, String uuid, String type) {
@@ -220,10 +230,39 @@ public class OrderService {
         jsonObject.put("cartId",cart.getId());
         jsonObject.put("type","create");
         producer.cons(jsonObject.toString());
+        CompletableFuture.runAsync(() -> checkWarnLineAndSendMsg(skuWithBLOBs, product, shopInfo));
 
         return Result.success(CodeEnum.SUCCESS, masterId);
     }
 
+    /**
+     * 校验商品库存警戒线并通知商户
+     * @param productSku sku
+     */
+    private void checkWarnLineAndSendMsg(TbProductSku productSku, TbProduct product, TbShopInfo shopInfo) {
+        if (productSku.getWarnLine() == null) {
+            return;
+        }
+
+
+        if (productSku.getStockNumber() == null) {
+            productSku.setStockNumber((double) 0);
+        }
+
+        if (product.getStockNumber() == null) {
+            product.setStockNumber(0);
+        }
+        if (
+                (product.getIsDistribute() == 1 && productSku.getStockNumber() <= productSku.getWarnLine())
+                        || (product.getIsDistribute() != 1) && product.getStockNumber() <= productSku.getWarnLine()
+        ) {
+            TbUserShopMsg tbUserShopMsg = tbUserShopMsgMapper.selectByShopId(productSku.getShopId());
+            wechatUtil.sendStockWarnMsg(shopInfo.getShopName(), product.getName(),
+                    product.getIsDistribute() == 1 ? productSku.getStockNumber().toString() : product.getStockNumber().toString(),
+                    "耗材库存不足，请及时补充。", tbUserShopMsg.getOpenId());
+        }
+    }
+
     public Result queryCart(String masterId, String shopId) {
         if (StringUtils.isEmpty(shopId)) {
             return Result.fail(CodeEnum.SHOPINFONOEXIST);

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

@@ -0,0 +1,104 @@
+package com.chaozhanggui.system.cashierservice.util;
+
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.http.HttpRequest;
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+@Component
+@Slf4j
+public class WechatUtil {
+    @Value("${wx.msg.appId}")
+    private String appId;
+
+    @Value("${wx.msg.secrete}")
+    private String secrete;
+
+    @Value("${wx.msg.warnMsgTmpId}")
+    private String msgTmpId;
+
+    static LinkedHashMap<String,String> linkedHashMap=new LinkedHashMap<>();
+
+    static {
+
+        linkedHashMap.put("40001","获取 access_token 时 AppSecret 错误，或者 access_token 无效。请开发者认真比对 AppSecret 的正确性，或查看是否正在为恰当的公众号调用接口");
+        linkedHashMap.put("40003","不合法的 OpenID ，请开发者确认 OpenID （该用户）是否已关注公众号，或是否是其他公众号的 OpenID");
+        linkedHashMap.put("40014","不合法的 access_token ，请开发者认真比对 access_token 的有效性（如是否过期），或查看是否正在为恰当的公众号调用接口");
+        linkedHashMap.put("40037","不合法的 template_id");
+        linkedHashMap.put("43101","用户未订阅消息");
+        linkedHashMap.put("43107","订阅消息能力封禁");
+        linkedHashMap.put("43108","并发下发消息给同一个粉丝");
+        linkedHashMap.put("45168","命中敏感词");
+        linkedHashMap.put("47003","参数错误");
+
+    }
+
+    public JSONObject getAccessToken(){
+        String requestUrl = "https://api.weixin.qq.com/cgi-bin/token";
+        Map<String, String> requestUrlParam = new HashMap<>();
+        //小程序appId
+        requestUrlParam.put("appid", appId);
+        //小程序secret
+        requestUrlParam.put("secret", secrete);
+        //默认参数
+        requestUrlParam.put("grant_type", "client_credential");
+        JSONObject jsonObject = JSON.parseObject(HttpClientUtil.doGet(requestUrl,requestUrlParam));
+        return jsonObject;
+    }
+
+    public static void main(String[] args) {
+        String id ="kSxJL9TR4s_UmOmNLE";
+//        sendStockWarnMsg("123", "1231", "1231", "23321", id);
+    }
+
+    public JSONObject sendStockWarnMsg(String shopName, String productName, String stock, String note, String toUserOpenId) {
+        Map<String, Object> data = new HashMap<String, Object>() {{
+            put("thing1", new HashMap<String, Object>(){{
+                put("value", shopName);
+            }});
+            put("thing6", new HashMap<String, Object>(){{
+                put("value", productName);
+            }});
+            put("number7", new HashMap<String, Object>(){{
+                put("value", stock);
+            }});
+            put("thing5", new HashMap<String, Object>(){{
+                put("value", note);
+            }});
+        }};
+        log.info("开始发送库存预警消息， 接收用户openId: {}, 消息数据: {}", toUserOpenId, data);
+        return sendTempMsg(msgTmpId, toUserOpenId, data);
+    }
+
+
+    public JSONObject sendTempMsg(String tempId, String toUserOpenId, Map<String, Object> data) {
+        log.info("开始发送微信模板消息， 接收用户openId: {}, 消息数据: {}", toUserOpenId, data);
+        JSONObject object= getAccessToken();
+        String accessToken=object.get("access_token")+"";
+
+        JSONObject object1=new JSONObject();
+
+        object1.put("template_id", tempId);
+        object1.put("touser", toUserOpenId);
+        object1.put("data",data);
+
+        object1.put("miniprogram_state","trial");
+        object1.put("lang","zh_CN");
+
+        String response= HttpRequest.post("https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=".concat(accessToken)).body(object1.toString()).execute().body();
+        log.info("微信模板消息发送成功，相应内容:{}",response);
+        JSONObject resObj=JSONObject.parseObject(response);
+        if(ObjectUtil.isNotEmpty(resObj)&&ObjectUtil.isNotNull(resObj)&&"0".equals(resObj.get("errcode")+"")){
+            return resObj;
+        }
+
+        throw new RuntimeException(linkedHashMap.getOrDefault(resObj.get("errcode") + "", "未知错误"));
+    }
+}

src/main/resources/application.yml

@@ -48,6 +48,7 @@ wx:
   msg:
     appId: wxcf0fe8cdba153fd6
     secrete: c33e06467c6879a62af633d50ed6b720
+    warnMsgTmpId: IZ-l9p9yBgcvhRR0uN6cBQPkWJ5i05zyWMkfeCPaAmY