fix bug

@@ -191,7 +191,7 @@ public class CouponServiceImpl implements ICouponService,IBusinessExportService{
 
         // 检查限制的商品类型
         if (StringUtils.isNoneBlank(req.getSkupForbidType())){
-            String[] limitTypes = req.getSkupForbidType().split(",");
+            List<String> limitTypes = Splitter.on(",").omitEmptyStrings().trimResults().splitToList(req.getSkupForbidType());
             for (String limitType : limitTypes){
                 if (!limitType.matches("\\d+")){
                     throw new ServiceException(400, "错误：不合法的限制类型");