商户余额更新

cash-service/account-service/src/main/java/com/czg/service/account/service/impl/ShopInfoServiceImpl.java

@@ -459,7 +459,7 @@ public class ShopInfoServiceImpl extends ServiceImpl<ShopInfoMapper, ShopInfo> i
     @Override
     public BigDecimal updateAmount(Long id, BigDecimal amount) {
         ShopInfo shopInfo = getShopInfo(id);
-        if (shopInfo.getAmount() == null || shopInfo.getAmount().compareTo(BigDecimal.ZERO) <= 0) {
+        if (shopInfo.getAmount().add(amount).compareTo(BigDecimal.ZERO) < 0) {
             throw new CzgException("更新失败");
         }
         boolean flag = mapper.updateAmount(id, amount);