paascloud/paascloud-master · error · MdcBizException

MDC10021004

MDC10021004

Error message

MDC10021004

What it means

MDC10021004 maps to ErrorCodeEnum MDC10021004 ("找不到该商品信息,productId=%s" — product not found for the given productId). In OmcCartServiceImpl.getCarVo, when building the cart view each cart item's product is loaded via mdcProductService.selectById(productId); if the product no longer exists (deleted from the mdc_product table or not visible), an MdcBizException is thrown with the offending productId. It is a data-consistency issue: the cart references a product that no longer exists.

Solutions

  1. Confirm the productId exists in the mdc_product table (SELECT ... WHERE id = <productId>); if missing, remove the stale cart item instead of failing the whole cart.
  2. Clean up orphaned cart entries: delete omc_cart rows whose productId no longer exists before building the cart view.
  3. Soft-delete products instead of hard-deleting so existing cart items remain resolvable (or keep tombstone rows for order/cart history).
  4. If productId is wrong because of a data bug, fix the source data or the migration that produced the mismatch.
  5. Wrap per-item loading so one missing product is skipped/logged rather than aborting the entire cart response.

Example fix

// before
ProductDto product = mdcProductService.selectById(cartItem.getProductId());
if (product == null) {
    throw new MdcBizException(ErrorCodeEnum.MDC10021004, cartItem.getProductId());
}
// after
ProductDto product = mdcProductService.selectById(cartItem.getProductId());
if (product == null) {
    logger.warn("商品不存在, 移除失效购物车项, productId={}", cartItem.getProductId());
    omcCartMapper.deleteByUserIdProductIds(userId, Lists.newArrayList(cartItem.getProductId().toString()));
    continue;
}
Defensive patterns

Strategy: validation

Validate before calling

ProductDto product = mdcProductService.selectById(productId);
if (product == null) {
    logger.warn("Skipping cart item, product missing, productId={}", productId);
    return null; // or remove the cart item upstream
}

Type guard

boolean productExists(Long productId) { return productId != null && mdcProductService.selectById(productId) != null; }

Try / catch

try {
    return cartService.getCarVo(userId);
} catch (MdcBizException e) {
    if (String.valueOf(e.getMessage()).contains("找不到该商品信息")) {
        // refresh cart / prune stale items and retry once
    } else { throw e; }
}

Prevention

When it happens

Trigger: Rendering/updating the shopping cart when a cart item references a productId that selectById cannot resolve — typically the product was deleted or unpublished in the MDC service after being added to the cart.

Common situations: Products removed by an admin while still sitting in users' carts; test/staging carts pointing at a different database than the product service; orphaned cart rows from data migration; stale carts after a data reset.

Understand the failure class

Background: Record Not Found Errors: "not found", RecordNotFound, and "was not found" — what they mean and how to fix them — this error's family across 28 libraries.

Related errors


AI-assisted analysis of paascloud/paascloud-master@781281a950 (2026-09-10). Data as JSON: /api/errors/adc5bef9693dcd1b. Report an issue: GitHub.

Appendix: source

Thrown at paascloud-provider/paascloud-provider-omc/src/main/java/com/paascloud/provider/service/impl/OmcCartServiceImpl.java:80

	public CartVo getCarVo(Long userId) {
		logger.info("getCarVo -  获取购物车列表 -- userId={}", userId);
		CartVo cartVo = new CartVo();
		List<OmcCart> cartList = this.selectCartListByUserId(userId);
		List<CartProductVo> cartProductVoList = Lists.newArrayList();

		BigDecimal cartTotalPrice = new BigDecimal("0");

		if (PublicUtil.isNotEmpty(cartList)) {
			for (OmcCart cartItem : cartList) {
				CartProductVo cartProductVo = new CartProductVo();
				cartProductVo.setId(cartItem.getId());
				cartProductVo.setUserId(userId);
				cartProductVo.setProductId(cartItem.getProductId());

				ProductDto product = mdcProductService.selectById(cartItem.getProductId());

				if (product == null) {
					throw new MdcBizException(ErrorCodeEnum.MDC10021004, cartItem.getProductId());
				}

				cartProductVo.setProductMainImage(product.getMainImage());
				cartProductVo.setProductName(product.getName());
				cartProductVo.setProductSubtitle(product.getSubtitle());
				cartProductVo.setProductStatus(product.getStatus());
				cartProductVo.setProductPrice(product.getPrice());
				cartProductVo.setProductStock(product.getStock());

				//判断库存
				int buyLimitCount;
				if (product.getStock() >= cartItem.getQuantity()) {
					//库存充足的时候
					buyLimitCount = cartItem.getQuantity();
					cartProductVo.setLimitQuantity(OmcApiConstant.Cart.LIMIT_NUM_SUCCESS);
				} else {
					buyLimitCount = product.getStock();
					cartProductVo.setLimitQuantity(OmcApiConstant.Cart.LIMIT_NUM_FAIL);

View on GitHub (pinned to 781281a950)