增加可用优惠券数量

src/main/java/com/chaozhanggui/system/cashierservice/controller/UserContoller.java

@@ -82,7 +82,7 @@ public class UserContoller {
     }
 
     @GetMapping("/userCoupon")
-    public Result userCoupon(@RequestParam("userId") String userId ,@RequestParam("shopId") BigDecimal orderNum ) throws Exception {
+    public Result userCoupon(@RequestParam("userId") String userId ,@RequestParam("orderNum") BigDecimal orderNum ) throws Exception {
         int num = userService.userCoupon(userId,orderNum);
         return Result.success(CodeEnum.SUCCESS,num);
     }