silverlight調(diào)用淘寶api接口做淘寶客應(yīng)用

發(fā)布時(shí)間：2013-12-05 16:45:40 作者：佚名

Silverlight無(wú)法直接調(diào)用淘寶的API，可以使用WebClient或者自定義WCF來(lái)間接調(diào)用淘寶接口。本例中采用的是調(diào)用WebClient方式，執(zhí)行一段ashx，然后將返回的數(shù)據(jù)用反序列化生成相應(yīng)對(duì)象的實(shí)例

起始頁(yè)面為L(zhǎng)ogin.aspx，固定調(diào)試端口為49441。需要配合自己淘寶開(kāi)放平臺(tái)的應(yīng)用的回調(diào)頁(yè)面URL來(lái)調(diào)整。

ashx代碼：
（說(shuō)明：代碼中ITopClient為淘寶接口TopSdk.dll中的類，此例子使用的ItemsOnsaleGetRequest是用于獲取銷售中的商品，response.Body是獲取到的數(shù)據(jù)信息）

復(fù)制代碼

代碼如下:

public class OnsaleGet : IHttpHandler
{ public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";

ITopClient client = new DefaultTopClient(Config.ServerURL, Config.Appkey, Config.Secret); ItemsOnsaleGetRequest req = new ItemsOnsaleGetRequest();
req.Fields = "approve_status,num_iid,title,nick,type,cid,pic_url,num,props,valid_thru,list_time,price,has_discount,has_invoice,has_warranty,has_showcase,modified,delist_time,postage_id,seller_cids,outer_id";
ItemsOnsaleGetResponse response = client.Execute(req, Config.Top_session); 
if (response.IsError)
{
context.Response.Write("[錯(cuò)誤：查詢函數(shù)執(zhí)行失敗]");
}
else
{
context.Response.Write(response.Body);
} } public bool IsReusable
{
get
{
return false;
}
}
}

前端SL獲取數(shù)據(jù)信息的方法

復(fù)制代碼

代碼如下:

void GetList()
{
string absolutePath = HtmlPage.Document.DocumentUri.AbsoluteUri;
string address = absolutePath.Substring(0, absolutePath.LastIndexOf('/'))
+ "/TaoBaoHandler/OnsaleGet.ashx"; Uri uri = new Uri(address); WebClient client = new WebClient();
client.DownloadStringCompleted += (sender, e) =>
{
if (e.Error == null)
{
System.Xml.Linq.XElement.Parse(e.Result);//字符串轉(zhuǎn)為xml

ItemsOnsaleGetResponse list = SerializeHelper.DeserializeFromString<ItemsOnsaleGetResponse>(e.Result);//反序列化
if (list != null)
{
if (list.Items != null && list.Items.Count > 0)
{
MessageBox.Show(list.Items[0].NumIid.ToString());
}
}
else
{

}
}
else
{
MessageBox.Show(e.Error.Message);
}
};
client.DownloadStringAsync(uri);
}

SerializeHelper
序列化部分是自定義的一個(gè)類

復(fù)制代碼

代碼如下:

public class SerializeHelper
{
private SerializeHelper() { } #region Serialize /// <summary>
/// 序列化實(shí)體
/// </summary>
/// <typeparam name="T">實(shí)體類型</typeparam>
/// <param name="data">實(shí)體</param>
/// <returns>xml字體串</returns>
public static string Serialize<T>(T data)
{
try
{
var serializer = new XmlSerializer(typeof(T)); XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
XmlWriterSettings writerSettings = new XmlWriterSettings();
writerSettings.OmitXmlDeclaration = true;
StringWriter stringWriter = new StringWriter();
using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter, writerSettings))
{
serializer.Serialize(xmlWriter, data, ns);
}
string xmlText = stringWriter.ToString(); return xmlText;
}
catch (InvalidOperationException ex)
{
if (ex.Message != "")
{ }
} return string.Empty;
} public static string SerializeList<T>(List<T> list)
{
try
{
var serializer = new XmlSerializer(typeof(List<T>)); XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
XmlWriterSettings writerSettings = new XmlWriterSettings();
writerSettings.OmitXmlDeclaration = true;
StringWriter stringWriter = new StringWriter();
using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter, writerSettings))
{
serializer.Serialize(xmlWriter, list, ns);
}
string xmlText = stringWriter.ToString(); return xmlText;
}
catch
{ } return string.Empty;
} #endregion #region Deserializer /// <summary>
/// 反序列化實(shí)體
/// </summary>
/// <typeparam name="T">實(shí)體類型</typeparam>
/// <param name="xml">xml字體串</param>
/// <returns>實(shí)體</returns>
public static T DeserializeFromString<T>(string xml)
{
T theObject;
try
{
XmlReader reader = XmlReader.Create(new StringReader(xml));
var serializer = new XmlSerializer(typeof(T));
theObject = (T)serializer.Deserialize(reader);
reader.Close();
return theObject;
}
catch
{ } return default(T);
} public static List<T> DeserializeListFromString<T>(string xml)
{
try
{
var serializer = new XmlSerializer(typeof(List<T>));
StringReader reader = new StringReader(xml); List<T> list = (List<T>)serializer.Deserialize(reader);
reader.Close(); return list;
}
catch (InvalidOperationException ex)
{
if (ex.InnerException.Message != "")
{ }
} return null;
} #endregion
}

淘寶相關(guān)的數(shù)據(jù)類型
TopModels模塊中的ItemsOnsaleGetResponse,Item,ItemImg,Location等這些實(shí)體是從TopSdk.dll中找到相應(yīng)的定義粘貼出來(lái)供Silverlight下使用的。如圖