c# - 反序列化 XML Rest WebApi 调用？

Question

我一直在关注一些在线示例，但出于某种原因我无法成功反序列化以下 XML 文档:

<?xml version="1.0" encoding="UTF-8"?>
<result>
    <postcode>BD1 1LT</postcode>
    <geo>
        <lat>53.793063240118215</lat>
        <lng>-1.7540318423563699</lng>
        <easting>416300.0</easting>
        <northing>433000.0</northing>
        <geohash>http://geohash.org/gcwf00dz21g1</geohash>
    </geo>
    <administrative>
        <council>
            <title>Bradford</title>
            <uri>http://statistics.data.gov.uk/id/statistical-geography/E08000032</uri>
            <code>E08000032</code>
        </council>
        <ward>
            <title>City</title>
            <uri>http://statistics.data.gov.uk/id/statistical-geography/E05001347</uri>
            <code>E05001347</code>
        </ward>
        <constituency>
            <title>Bradford West</title>
            <uri>http://statistics.data.gov.uk/id/statistical-geography/E14000589</uri>
            <code>E14000589</code>
        </constituency>
    </administrative>
</result>

我尝试了各种组合:

[DataContract(Name = "result", Namespace = "")]
public class Result
{
    [DataMember(Name = "postcode")]
    public string Postcode { get; set; }
    [DataMember(Name = "geo")]
    public Geo Geo { get; set; } 
}

[DataContract(Name = "geo")]
public class Geo
{
    [DataMember(Name = "lat")]
    public string Lat { get; set; } 
}

但我只能得到邮政编码，除此之外别无他物。 上面 是我拥有的 工作 atm。

下面是我根据一些例子整理的:

    [Test]
    public void TestRestCall()
    {
        var url = "http://uk-postcodes.com/postcode/";
        var urlParameters = "bd11lt.xml";
        var client = new HttpClient();
        client.BaseAddress = new Uri(url);

        // Add an Accept header for JSON format.
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/xml"));

        // List data response.
        HttpResponseMessage response = client.GetAsync(urlParameters).Result;  // Blocking call!
        if (response.IsSuccessStatusCode)
        {
            // Parse the response body. Blocking!
            var dataObjects = response.Content.ReadAsAsync<Result>().Result;
            //Console.WriteLine("{0}", dataObjects.Geo.);
        }
        else
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
        } 
    }

更新:

Geo 属性为 null，这是我所能得到的。

Answer 1

我看到了两个问题。一个与排序有关，另一个与命名空间有关。

您需要指定所有属性和对象的顺序，但您还需要指定所有它们的命名空间。

    [DataContract(Name = "result", Namespace = "")]
    public class Result
    {
        [DataMember(Name = "postcode", Order = 1)]
        public string Postcode { get; set; }

        [DataMember(Name = "geo", Order = 2)]
        public Geo Geo { get; set; }
    }

同样，在您的 GEO 对象上，您必须指定两者才能使映射在 HttpClient 上工作。

    [DataContract(Name = "geo", Namespace = "")]
    public class Geo
    {
        [DataMember(Name = "lat", Order = 1)]
        public string Lat { get; set; }
    }

希望对您有所帮助。