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我正在尝试在 ASP.NET C# 中创建一个 RSS 2.0 提要,其中包含要提供给 Froogle 的产品。

RSS 提要应如下所示:

http://www.google.com/support/merchants/bin/answer.py?answer=160589&hl=en

我正在使用 SyndicationFeed 和 SyndicationsItems 创建提要。但我无法添加额外的元素,如 g:image_link。

我尝试了额外的元素,例如;

syndicationItem.ElementExtensions.Add(new XElement("image_link", product.ImageLink).CreateReader());

这有效,但我怎样才能添加命名空间

xmlns:g="http://base.google.com/ns/1.0"

到第一个 RSS 标记并将其用于扩展元素?

谢谢

4

2 回答 2

1

XElements 有很好的命名空间支持。像这样创建你的第一个元素:

XNamespace aw = "http://base.google.com/ns/1.0";
XElement root = new XElement(aw + "image_link", product.ImageLink);

这将为您提供如下 XML:

<image_link xmlns="http://base.google.com/ns/1.0">
</image_link>

每个后续元素也应该使用相同的命名空间。如果你想为你的元素使用命名空间前缀,这是一种类似的方法。您可以在此处查看 MSDN 上的一些完整示例:

如何:使用命名空间创建文档

于 2010-03-30T20:21:17.387 回答
1

事实上,我上周刚写了这样的东西。我没有太多时间,所以它没有优化或漂亮。

不过,我使用了 XDocument。

static XDocument GetXDocument(List<GoogleProduct> googleProducts)
{
    XNamespace gns = "http://base.google.com/ns/1.0";

    XDocument document = new XDocument(
        new XElement("rss",
            new XAttribute("version", "2.0"),
            new XAttribute(XNamespace.Xmlns + "g", gns),
            new XElement("channel",
                new XElement("title", "X Company Feed"),
                new XElement("description", "X Description"),
                new XElement("link", "http://www.somecompany.com/"),
                from googleProduct in googleProducts
                select new XElement("item",
                    new XElement("title", googleProduct.Title),
                    new XElement(gns + "brand", googleProduct.ProductRecommendedAttributes.Brand),
                    new XElement(gns + "manufacturer", googleProduct.ProductRecommendedAttributes.Manufacturer),
                    new XElement(gns + "condition", googleProduct.Condition),
                    new XElement("description", googleProduct.Description),
                    new XElement(gns + "id", googleProduct.ID),
                    from img in googleProduct.ProductRecommendedAttributes.ImageLinks
                    select new XElement(gns + "image_link", img),
                    new XElement("link", googleProduct.Link),
                    new XElement(gns + "price", googleProduct.Price.ToString("0.00")),
                    new XElement(gns + "product_type", googleProduct.ProductRecommendedAttributes.ProductType),
                    from pmt in googleProduct.ProductOptionalAttributes.PaymentAccepteds
                    select new XElement(gns + "payment_accepted", pmt)))));

    //
    return document;
}

(仅供参考:GoogleProduct 只是我使用的一个临时映射器类)

它将按照这些思路生成一个文档

<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0" xmlns:g="http://base.google.com/ns/1.0">
  <channel>
    <title>Blah Data Feed</title>
    <description>Stuff from Blah</description>
    <link>http://www.blah.com/shopping</link>
    <item>
      <title>Blah</title>
      <g:brand>Blah</g:brand>
      <g:manufacturer>Blah</g:manufacturer>
      <g:condition>New</g:condition>
      <description>blah blah</description>
      <g:id>268</g:id>
      <g:image_link>http://www.blah.com/shopping/images/PRODUCT/medium/268.jpg</g:image_link>
      <link>http://www.blah.com/</link>
      <g:price>1747.00</g:price>
      <g:product_type>Blah Blah</g:product_type>
      <g:payment_accepted>Cash</g:payment_accepted>
      <g:payment_accepted>Check</g:payment_accepted>
      <g:payment_accepted>Visa</g:payment_accepted>
      <g:payment_accepted>Mastercard</g:payment_accepted>
    </item>
    <item>
      <title>Blah</title>
      <g:brand>Blah</g:brand>
      <g:manufacturer>Blah</g:manufacturer>
      <g:condition>New</g:condition>
      <description>blah blah</description>
      <g:id>269</g:id>
      <g:image_link>http://www.blah.com/shopping/images/PRODUCT/medium/269.jpg</g:image_link>
      <link>http://www.blah.com/</link>
      <g:price>1103.00</g:price>
      <g:product_type>blah blah</g:product_type>
      <g:payment_accepted>Cash</g:payment_accepted>
      <g:payment_accepted>Check</g:payment_accepted>
      <g:payment_accepted>Visa</g:payment_accepted>
      <g:payment_accepted>Mastercard</g:payment_accepted>
    </item>
  </channel>
</rss>
于 2010-03-30T20:23:08.630 回答