用Silverlight做淘宝应用

Silverlight无法直接调用淘宝的API，可以使用WebClient或者自定义WCF来间接调用淘宝接口。

本例中采用的是调用WebClient方式，执行一段ashx，然后将返回的数据用反序列化生成相应对象的实例。

起始页面为Login.aspx，固定调试端口为49441。需要配合自己淘宝开放平台的应用的回调页面URL来调整。

示例代码下载

ashx代码：

（说明：代码中ITopClient为淘宝接口TopSdk.dll中的类，此例子使用的ItemsOnsaleGetRequest是用于获取销售中的商品，response.Body是获取到的数据信息）

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("[错误：查询函数执行失败]");}else{context.Response.Write(response.Body);}}public bool IsReusable{get{return false;}}}

前端SL获取数据信息的方法

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);//字符串转为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

序列化部分是自定义的一个类

public class SerializeHelper{private SerializeHelper() { }#region Serialize/// <summary>/// 序列化实体/// </summary>/// <typeparam name="T">实体类型</typeparam>/// <param name="data">实体</param>/// <returns>xml字体串</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>/// 反序列化实体/// </summary>/// <typeparam name="T">实体类型</typeparam>/// <param name="xml">xml字体串</param>/// <returns>实体</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}

淘宝相关的数据类型

TopModels模块中的ItemsOnsaleGetResponse,Item,ItemImg,Location等这些实体是从TopSdk.dll中找到相应的定义粘贴出来供Silverlight下使用的。如图

web.config中的配置

配置沙箱环境和正式环境的选择，以及AppKey和AppSecret

<appSettings><!--IsSandBox 1=沙箱开启 0=非沙箱(正式环境)  --><add key="SandBox" value="1"/><!--应用 信息--><add key="AppKey" value="1012596959"/><add key="AppSecret" value="sandboxc5928dd8d1cfa3bb4f7d87e33"/></appSettings>

另外，web中的那些Client.cs和Config.cs则是从淘宝示例Demo中来的。

最终数据的获取如下：

示例代码下载

转载于:https://www.cnblogs.com/xtechnet/archive/2012/06/26/TopBySilverlight.html