如何从GreatSchool API响应反序列化

Question

我必须从XML (greatschool )反序列化到类域。

网址：http://www.greatschools.org/api/docs/nearbySchools.page

XML：

<schools>
<school>
<gsId>936</gsId>
<name>Centerville Elementary</name>
<type>public</type>
<gradeRange>K-6</gradeRange>
...
</schools>

我创建了像这样的DOMain来进行转换

[Serializable()]
   [System.Xml.Serialization.XmlRoot("schools")]
   public class SchoolResponse
   {
       [XmlArray("schools")]
       [XmlArrayItem("school", typeof(School))]
       public School[] school { get; set; }
   }
 [Serializable()]
   public class School
   {
       [System.Xml.Serialization.XmlElement("gsId")]
       public string GSId { get; set; }
        [System.Xml.Serialization.XmlElement("name")]
       public string Name { get; set; }
....
}

调用方法：

 var url = new Uri(this.BaseUri, request.ToUri());
            return Internal.Http.Get(url,"XML").As<SchoolResponse>();
...

public virtual T As<T>() where T : class
            {
                T output = null;

                using (var reader = GetStreamReader(this.RequestUri))
                {
                        XmlSerializer serializer = new XmlSerializer(typeof(T));
                        output = (T)serializer.Deserialize(reader);
                }
               return output;
            }

它返回为null。请帮帮忙

Answer 1

问题在于school数组属性。尝尝这个

[Serializable()]
[System.Xml.Serialization.XmlRoot("schools")]
public class SchoolResponse
{
   [XmlElement("school")]
   public School[] school { get; set; }
}

通常，C# XML喜欢有一个数组名称元素，然后为每个数组值设置一个元素。通过在数组上使用[XmlElement]，不会生成外部元素。

Answer 2

如我所见，学校类型的有效值是：“公共”、“宪章”、“私有”或任何由连字符分隔的组合，如“公共宪章”，我认为最好的变体是这样声明枚举类型：

public enum SchoolType
{
    [XmlEnum("public")]
    Public,
    [XmlEnum("charter")]
    Charter,
    [XmlEnum("private")]
    Private,
    [XmlEnum("public-charter")]
    PublicCharter,
    [XmlEnum("public-private")]
    PublicPrivate,
    [XmlEnum("private-charter")]
    PrivateCharter,
    [XmlEnum("public-charter-private")]
    PublicCharterPrivate
}

然后您的类定义将如下所示：

[Serializable]
public class School
{
    [XmlElement("gsId")] //Custom property name
    public string GSId { get; set; } //The same property name
    public string name { get; set; }
    public string type { get; set; }
    public string gradeRange { get; set; }
    [XmlElement("schoolType")] //Enum declaration
    public SchoolType SchoolType { get; set; }
}

但是你也应该检查所有的变体