java在Hibernate中获取实体但为空值的属性

4 月，3 周 Questions & Answers 98

我通过代码获取一个实体，并使用Hibernate从数据库中获取结果。该值存在，但所有属性都显示为null，如果我尝试使用返回的实体对象属性值的属性，这些属性值将显示为null。但价值确实存在

Order和Cart扩展了一个具有公共属性的抽象类。下面是我拥有的实体和代码

@MappedSuperclass
@Getter @Setter
 public class AbstractOrder implements Serializable {

  @OneToOne(fetch = FetchType.LAZY,cascade = CascadeType.PERSIST)
  @JoinColumn(name = "DeliveryAddressID")
  private Address deliveryAddress;

  @OneToOne(fetch = FetchType.LAZY,cascade = CascadeType.PERSIST)
  @JoinColumn(name = "BillingAddressID")
  private Address billingAddress;
  ....
  ....

 }

 public Order cloneCartToOrder(String cartCode,String sellerId) {
    Cart cart = cartDao.findByCode(cartCode);
    Order order=getOrderDetails(cartCode);
    List<PromotionResult> promotionResults = null;
    if(order==null) {
        order = modelMapper.map(cart, Order.class);
        order.setOrderDate(new Date());
        order.setCode(cart.getCode());
        order.setStatus("Open");
        order.setHowWasOrderConfirmed(HowOrderConfirmStatus.ESALE);
        setOrderAddress(order, cart);
        promotionResults = order.getPromotionResults().stream().map(promotionResult -> {
   ..........
   ..........
   ..........

}

private void setOrderAddress(Order order, Cart cart) {
    Address address = addressDao.getAddressById(cart.getBillingAddress().getId());
    if (order.getShippingSameAsInvoice()) {
        Address billAddress = createNewAddressForOrder(address);
        order.setBillingAddress(billAddress);
        order.setDeliveryAddress(billAddress);
    } else {
        Address billAddress = createNewAddressForOrder(address);
        Address deliveryAddress = createNewAddressForOrder(addressDao.getAddressById(cart.getDeliveryAddress().getId()));
        order.setBillingAddress(billAddress);
        order.setDeliveryAddress(deliveryAddress);
    }
}

private Address createNewAddressForOrder(Address address ) {
    Address newAddress = new Address();
    newAddress.setBusinessPhone(address.getBusinessPhone());
    newAddress.setCountry(address.getCountry());
    newAddress.setCompany(address.getCompany());
    newAddress.setEmail(address.getEmail());
    newAddress.setFirstName(address.getFirstName());
    newAddress.setLastName(address.getLastName());
    newAddress.setHomePhone(address.getHomePhone());
    newAddress.setIsBillingAddress(address.getIsBillingAddress());
    newAddress.setIsShippingAddress(address.getIsShippingAddress());
    newAddress.setLatitude(address.getLatitude());
    newAddress.setLongitude(address.getLongitude());
    newAddress.setMobile(address.getMobile());
    newAddress.setPostCode(address.getPostCode());
    newAddress.setState(address.getState());
    newAddress.setStreetAddress1(address.getStreetAddress1());
    newAddress.setStreetAddress2(address.getStreetAddress2());
    newAddress.setSuburb(address.getSuburb());
    newAddress.setTitle(address.getTitle());
    newAddress.setZone(address.getZone());
    return newAddress;
}

因此，如果你看到这里，我称之为setOrderAddress（订单，购物车）第一种方法中的方法。然后将地址填充到一个新对象，将其另存为一个新地址。但保存后，我可以看到我新创建的所有值都保存为空，只有ID为的地址

请查看PFA，同时从IDE进行检查

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java在Hibernate中获取实体但为空值的属性

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