Question

我正在尝试将此XML反序列化为C＃.NET 4.5中的对象：

<DIDL-Lite xmlns:dc="http://purl.org/dc/elements/1.1/"
       xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/"
       xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/">
    <item id="28" parentID="19" restricted="1">
        <dc:creator>Alicia Keys</dc:creator> 
        <dc:date>2003-01-01</dc:date>
        <dc:title>Gangsta Lovin&apos; (feat. Alicia Keys)</dc:title>
    </item>
</DIDL-Lite>

代码：

我没有得到任何“项目”列表。该对象未反序列化。

MemoryStream reader = new MemmoryStream(System.Text.Encoding.Unicode.GetBytes(Result));
var ser = new XmlSerializer(typeof(DIDLLite));
DIDLLite device = (DIDLLite)ser.Deserialize(reader);

班级DIDLLite：

[XmlRoot("DIDL-Lite", Namespace = "urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/")]
public class DIDLLite {
    DIDLLite() {
        this.serviceItem = new List<ContainerItem>();
    }

    [System.Xml.Serialization.XmlArrayItem("item", typeof(ServiceListTypeService), IsNullable = false)]
    List<ContainerItem> serviceItem = new List<ContainerItem>();
}

班级ContainerItem：

public class ContainerItem
{
    [System.Xml.Serialization.XmlAttribute("id")]
    public string id { get; set; }

    [System.Xml.Serialization.XmlAttribute("parentID")]
    public string parentID { get; set; }

    [System.Xml.Serialization.XmlAttribute("restricted")]
    public string restricted { get; set; }

    [System.Xml.Serialization.XmlAttribute("searchable")]
    public string searchable { get; set; }

    public string title { get; set; }
}

Answer 1

您有几个问题：

您定义了一个XmlArrayItem属性 - 但实际上，在您的XML中，您没有任何项目列表。如果你想使用Xml数组结构，你需要为你的XML提供类似的东西：
```
<DIDL-Lite .....>
    <Items>
       <item id="28" parentID="19" restricted="1">
        ......
       </item>
       <item id="29" parentID="19" restricted="1">
        ......
       </item>
    </Items>
</DIDL-Lite>
```
因此，您需要在<Items>...</Items>元素周围添加<item>包装。
您有此声明：
```
[XmlArrayItem("item", typeof(ServiceListTypeService), IsNullable = false)]
```
但是ServiceListtypeService定义在哪里？我没有看到任何痕迹......

我简化了你的代码 - 这很好用：

[XmlRoot("DIDL-Lite", Namespace = "urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/")]
public class DIDLLite
{
    [XmlElement("item")]
    public ContainerItem Item { get; set; }
}


public class ContainerItem
{
    [XmlAttribute("id")]
    public string id { get; set; }

    [XmlAttribute("parentID")]
    public string parentID { get; set; }

    [XmlAttribute("restricted")]
    public string restricted { get; set; }

    [XmlAttribute("searchable")]
    public string searchable { get; set; }

    // you were missing these elements and their namespace

    [XmlElement(Namespace = "http://purl.org/dc/elements/1.1/")]
    public string creator { get; set; }
    [XmlElement(Namespace = "http://purl.org/dc/elements/1.1/")]
    public string date { get; set; }
    [XmlElement(Namespace = "http://purl.org/dc/elements/1.1/")]
    public string title { get; set; }
}

现在，当我运行你的代码来反序列化你的XML时，我确实很好地填充了这些对象。

使用多个名称空间将XML反序列化为对象

1 个答案: