Question

我正在尝试使用以下代码中的C＃XmlDocument类编写一个SOAP请求来ebay FindingAPI Web服务：

XmlDocument doc = new XmlDocument();
XmlElement root = (XmlElement)doc.AppendChild(doc.CreateElement("soap", "Envelope", "http://www.w3.org/2003/05/soap-envelope"));
root.SetAttribute("xmlns", "http://www.ebay.com/marketplace/search/v1/services");
XmlElement header = (XmlElement)root.AppendChild(doc.CreateElement("soap", "Header", "http://www.w3.org/2003/05/soap-envelope"));
XmlElement body = (XmlElement)root.AppendChild(doc.CreateElement("soap", "Body", "http://www.w3.org/2003/05/soap-envelope"));
XmlElement request = (XmlElement)body.AppendChild(doc.CreateElement("findItemsByKeywordsRequest"));
XmlElement param = (XmlElement)request.AppendChild(doc.CreateElement("keywords"));
param.InnerText = "harry potter phoenix";

并且，上面代码的XML输出是：

<soap:Envelope xmlns="http://www.ebay.com/marketplace/search/v1/services" xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
    <soap:Header />
    <soap:Body>
        <findItemsByKeywordsRequest xmlns="">
            <keywords>harry potter phoenix</keywords>
        </findItemsByKeywordsRequest>
    </soap:Body>
</soap:Envelope>

但是，由于findItemsByKeywordsRequest元素中有额外的xmlns =“”属性，服务器无法识别此XML。所需的XML输出应如下所示：

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns="http://www.ebay.com/marketplace/search/v1/services">
    <soap:Header/>
    <soap:Body>
        <findItemsByKeywordsRequest>
            <keywords>harry potter phoenix</keywords>
        </findItemsByKeywordsRequest>
    </soap:Body>
</soap:Envelope>

有谁知道我的代码有什么问题，请给我一些提示。谢谢！

Answer 1

因为您的文档在最外层元素中声明了默认命名空间，所以您必须在每个子元素上重复该命名空间，以避免添加额外的空元素。

将request和param元素声明更改为包含"http://www.ebay.com/marketplace/search/v1/services"命名空间

XmlElement request = (XmlElement)body.AppendChild(doc.CreateElement("findItemsByKeywordsRequest", "http://www.ebay.com/marketplace/search/v1/services"));
XmlElement param = (XmlElement)request.AppendChild(doc.CreateElement("keywords", "http://www.ebay.com/marketplace/search/v1/services"));

通过这些更改，您的代码将生成以下XML：

<soap:Envelope xmlns="http://www.ebay.com/marketplace/search/v1/services" xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
    <soap:Header />
    <soap:Body>
        <findItemsByKeywordsRequest>
            <keywords>harry potter phoenix</keywords>
        </findItemsByKeywordsRequest>
    </soap:Body>
</soap:Envelope>

在前缀元素下没有xmlns的XmlDocument CreateElement

1 个答案: