[英]parsing xml returned by web service response
我已經閱讀了很多關於這個主題的問題,但我似乎與我正在嘗試做的事情有關。 基本上,我正在調用 Web 服務以返回有關車輛識別號 (VIN) 的信息。 它返回一個 xml 流,如下所示:
<VINquery Version="1.0.0" Date="5/25/2003">
<VIN Number="1HGES15501Lxxxxxx" Status="SUCCESS">
<Vehicle VINquery_Vehicle_ID="23261" Model_Year="2001" Make="Honda" Model="Civic" Trim_Level="LX Sedan">
<Item Key="VINquery Vehicle ID" Value="23261" Unit=""/>
<Item Key="Model Year" Value="2001" Unit=""/>
<Item Key="Make" Value="Honda" Unit=""/>
<Item Key="Model" Value="Civic" Unit=""/>
<Item Key="Trim Level" Value="LX Sedan" Unit=""/>
<Item Key="Manufactured in" Value="UNITED STATES" Unit=""/>
<Item Key="Production Seq. Number" Value="xxxxxx" Unit=""/>
<Item Key="Body Style" Value="SEDAN 4-DR" Unit=""/>
<Item Key="Engine Type" Value="1.7L L4 SOHC 16V" Unit=""/>
<Item Key="Transmission-short" Value="5M OD" Unit=""/>
<Item Key="Transmission-long" Value="5-Speed Manual Overdrive" Unit=""/>
<Item Key="Driveline" Value="FWD" Unit=""/>
<Item Key="Tank" Value="13.20" Unit="gallon"/>
<Item Key="Fuel Economy-city" Value="30 - 32" Unit="miles/gallon"/>
<Item Key="Fuel Economy-highway" Value="38 - 39" Unit="miles/gallon"/>
<Item Key="Anti-Brake System" Value="Non-ABS" Unit=""/>
<Item Key="Steering Type" Value="R&P" Unit=""/>
<Item Key="Standard Seating" Value="5" Unit=""/>
<Item Key="Optional Seating" Value="No data" Unit=""/>
<Item Key="Length" Value="174.60" Unit="in."/>
<Item Key="Width" Value="67.50" Unit="in."/>
<Item Key="Height" Value="56.70" Unit="in."/>
</Vehicle>
</VIN>
</VINquery>
我想獲取該數據並為每個鍵/值解析它。 這是我正在使用獲取 xml 數據的代碼:
private string baseURL = "http://ws.vinquery.com/restxml.aspx?accessCode=xxxxxx&vin=xxxxxxxxx";
private string reportType = "&reportType=2";
public XmlDocument ExplodeVIN(string strVIN)
{
DataTable dt = new DataTable();
string url = baseURL + strVIN + reportType;
HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;
XmlDocument xmlDoc = new XmlDocument();
using (HttpWebResponse resp = req.GetResponse() as HttpWebResponse)
{
xmlDoc.Load(resp.GetResponseStream());
}
return xmlDoc;
}
獲得 xmlDoc 后,我不確定下一步該做什么。
感謝您的幫助。
您可以使用 Linq to Xml 將 xml 解析為Dictionary<string, string>
:
var xdoc = XDocument.Parse(xml);
var items = xdoc.Descendants("Item")
.ToDictionary(i => (string)i.Attribute("Key"),
i => (string)i.Attribute("Value"));
用法:
string driveline = items["Driveline"];
要么
foreach(var kvp in items)
// use key value pair
XmlDocument xmldoc = new XmlDocument();
XmlNodeList xmlnodelstTrack = xmldoc.GetElementsByTagName("Item");
foreach (XmlNode NodeObj in xmlnodelstTrack)
{
//Do stuff with NodeObj.OuterXml
}
我通常使用另一種方法來處理xml。
第 1 步:復制您的 xml 字符串並粘貼為類。
粘貼時,會自動生成以下代碼:
/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
[System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]
public partial class VINquery
{
private VINqueryVIN vINField;
private string versionField;
private string dateField;
/// <remarks/>
public VINqueryVIN VIN
{
get
{
return this.vINField;
}
set
{
this.vINField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Version
{
get
{
return this.versionField;
}
set
{
this.versionField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Date
{
get
{
return this.dateField;
}
set
{
this.dateField = value;
}
}
}
/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class VINqueryVIN
{
private VINqueryVINVehicle vehicleField;
private string numberField;
private string statusField;
/// <remarks/>
public VINqueryVINVehicle Vehicle
{
get
{
return this.vehicleField;
}
set
{
this.vehicleField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Number
{
get
{
return this.numberField;
}
set
{
this.numberField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Status
{
get
{
return this.statusField;
}
set
{
this.statusField = value;
}
}
}
/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class VINqueryVINVehicle
{
private VINqueryVINVehicleItem[] itemField;
private ushort vINquery_Vehicle_IDField;
private ushort model_YearField;
private string makeField;
private string modelField;
private string trim_LevelField;
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute("Item")]
public VINqueryVINVehicleItem[] Item
{
get
{
return this.itemField;
}
set
{
this.itemField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public ushort VINquery_Vehicle_ID
{
get
{
return this.vINquery_Vehicle_IDField;
}
set
{
this.vINquery_Vehicle_IDField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public ushort Model_Year
{
get
{
return this.model_YearField;
}
set
{
this.model_YearField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Make
{
get
{
return this.makeField;
}
set
{
this.makeField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Model
{
get
{
return this.modelField;
}
set
{
this.modelField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Trim_Level
{
get
{
return this.trim_LevelField;
}
set
{
this.trim_LevelField = value;
}
}
}
/// <remarks/>
[System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]
public partial class VINqueryVINVehicleItem
{
private string keyField;
private string valueField;
private string unitField;
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Key
{
get
{
return this.keyField;
}
set
{
this.keyField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Value
{
get
{
return this.valueField;
}
set
{
this.valueField = value;
}
}
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public string Unit
{
get
{
return this.unitField;
}
set
{
this.unitField = value;
}
}
}
第 2 步:將您的 xml 字符串反序列化為這個生成的類。
public T DeserializeXML<T>(string xmlContent)
{
XmlSerializer serializer = new XmlSerializer(typeof(T));
MemoryStream memStream = new MemoryStream(Encoding.UTF8.GetBytes(xmlContent));
return (T)serializer.Deserialize(memStream);
}
....
string resultXml = resp.GetResponseStream();
VINquery resultObject = DeserializeXML<VINquery>(resultObject);
現在您可以輕松地操作和過濾您的結果。
PS:您必須刪除 xml 字符串中的特殊字符 (&),因為當您嘗試將其粘貼為類時會導致問題。
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