LINQ to XML 嵌套元素

Question

我可以读取 XML 并返回 Order 元素。

我还需要返回嵌套在 Order 元素中的 ShippingAddress。 (Name, AddressLine1, City, PostalCode, CountryCode, Phone) 同时来自 XML 响应。

请有人告诉我如何同时到达送货地址。

我目前的代码是

private static IEnumerable<FormsPersistence> Addresses(XContainer doc)
    {
        XNamespace ns = "https://mws.amazonservices.com/Orders/2013-09-01";

        return from address in doc.Descendants(ns + "Order")
               select new FormsPersistence
               {
                   AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
                   PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
                   BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
                   BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
                   OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
               };
    }

    private static void OrderDetails(IEnumerable<FormsPersistence> addresses)
    {


        foreach (var address in addresses)
        {
            Console.WriteLine("---");
            Console.WriteLine(address.AmazonOrderId);
            Console.WriteLine(address.PurchaseDate);
            Console.WriteLine(address.BuyerName);
            Console.WriteLine(address.BuyerEmail);
            Console.WriteLine(address.OrderStatus);
            Console.WriteLine("---");
        }
    }

XML 响应是

<ListOrdersResult>
<CreatedBefore>10/23/2017 14:09:56</CreatedBefore>
<Orders>
  <Order>
    <AmazonOrderId>026-000000-000000</AmazonOrderId>
    <PurchaseDate>10/20/2017 13:45:17</PurchaseDate>
    <LastUpdateDate>10/20/2017 14:16:38</LastUpdateDate>
    <OrderStatus>Unshipped</OrderStatus>
    <FulfillmentChannel>MFN</FulfillmentChannel>
    <SalesChannel>Amazon.co.uk</SalesChannel>
    <ShipServiceLevel>Std UK Dom_1</ShipServiceLevel>
    <ShippingAddress>
      <Name>kkkkk kkkk</Name>
      <AddressLine1>22 kkkkk road</AddressLine1>
      <City>London</City>
      <PostalCode>SW14 JBD</PostalCode>
      <CountryCode>GB</CountryCode>
      <Phone>0000000000</Phone>
    </ShippingAddress>
    <OrderTotal>
      <CurrencyCode>GBP</CurrencyCode>
      <Amount>46.00</Amount>
    </OrderTotal>
    <NumberOfItemsShipped>0</NumberOfItemsShipped>
    <NumberOfItemsUnshipped>6</NumberOfItemsUnshipped>
    <PaymentExecutionDetail />
    <PaymentMethod>Other</PaymentMethod>
    <PaymentMethodDetails>
      <PaymentMethodDetail>Standard</PaymentMethodDetail>
    </PaymentMethodDetails>
    <MarketplaceId>A1F83G8C2ARO7P</MarketplaceId>
    <BuyerEmail>kkkkk@kkkkk.amazon.co.uk</BuyerEmail>
    <BuyerName>kkk akkkk</BuyerName>
    <ShipmentServiceLevelCategory>Standard</ShipmentServiceLevelCategory>
    <ShippedByAmazonTFM>False</ShippedByAmazonTFM>
    <OrderType>StandardOrder</OrderType>
    <EarliestShipDate>10/23/2017 00:00:00</EarliestShipDate>
    <LatestShipDate>10/24/2017 23:59:59</LatestShipDate>
    <EarliestDeliveryDate>10/25/2017 00:00:00</EarliestDeliveryDate>
    <LatestDeliveryDate>10/27/2017 23:59:59</LatestDeliveryDate>
    <IsBusinessOrder>False</IsBusinessOrder>
    <IsPrime>False</IsPrime>
    <IsPremiumOrder>False</IsPremiumOrder>
    <IsReplacementOrder>False</IsReplacementOrder>
  </Order>
</Orders>

类文件

class FormsPersistence
{
    public string AmazonOrderId { get; set; }
    public string MerchantOrderID { get; set; }
    public string PurchaseDate { get; set; }
    public string OrderStatus { get; set; }
    public string ASIN { get; set; }
    public string SKU { get; set; }
    public string ItemStatus { get; set; }
    public string ProductName { get; set; }
    public string Quantity { get; set; }
    public string BuyerName { get; set; }
    public string BuyerEmail { get; set; }
    public string Name { get; set; }
    public string AddressLine1 { get; set; }
    public string City { get; set; }
    public string PostalCode { get; set; }
    public string CountryCode { get; set; }
    public string Phone { get; set; }
    public string ShippingAddress { get; set; }
}

我补充说

class ShippingAddress
{
    public string Name { get; set; }
    public string AddressLine { get; set; }
    public string City { get; set; }
    public string PostalCode { get; set; }
    public string CountryCode { get; set; }
    public string Phone { get; set; }
  }

Answer 1

假设FormsPersistence有一个属性来保存它，您可以执行以下操作：

  return from address in doc.Descendants(ns + "Order")
         let shipping=address.Element(ns+"ShippingAddress")
         select new FormsPersistence
           {
               AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
               PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
               BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
               BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
               OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
               ShippingAddress= new ShippingAddress{Name=(string)shipping.Element(ns+"Name"),
                                                    AddressLine=(string)shipping.Element(ns+"AddressLine1"),
                                                   }
           };

您需要使用Element方法，它允许您获取当前节点的内部元素，并且在let子句的帮助下，您可以保存结果以便稍后在投影中使用它，如我在上面的代码中所示。

Answer 2

诀窍是使用 Elements 然后使用 FirstOrDefault()

return doc.Descendants(ns + "Order").Select(address => new FormsPersistence()
               {
                   AmazonOrderId = (string)address.Element(ns + "AmazonOrderId").Value ?? string.Empty,
                   PurchaseDate = (string)address.Element(ns + "PurchaseDate").Value ?? string.Empty,
                   BuyerName = (string)address.Element(ns + "BuyerName").Value ?? string.Empty,
                   BuyerEmail = (string)address.Element(ns + "BuyerEmail").Value ?? string.Empty,
                   OrderStatus = (string)address.Element(ns + "OrderStatus").Value ?? string.Empty,
                   ShippingAddress = address.Elements(ns + "ShippingAddress").Select(shipping => new {
                        name = (string)shipping.Element(ns + "Name")
                   }).FirstOrDefault() 
               }).ToList();