Response.Write("Hello LOLOTA"): [How to]Bing API開發初體驗

在Bing搜尋推出後不久，Bing search service API也跟著推出了- http://msdn.microsoft.com/en-us/library/dd900818.aspx

Bing Search提供了哪些 API 功能呢？

Retrieve information from the Internet
Monetize your application with advertisements
Improve and enhance search requests and results
Find location-specific information
Translate terms and blocks of text

除了搜索外，也提供了廣告、影片、phonebook以及翻譯等等的功能.

就讓我們開始來試看看Bing API吧:

http://msdn.microsoft.com/en-us/library/dd251020.aspx

首先，要先註冊一個AppID，每一個應用程式會對應使用一個AppID - http://bing.com/developers

透過Live Passport登入註冊，註冊成功後，就會產生一組序號(就是黑色噴墨的地方)。

接下來，我們開啟Visual Studio 2008，並開啟一個新的Web專案。

在專案中，我們加入Service Reference，並且在Address中輸入 http://api.search.live.net/search.wsdl?AppID您申請的AppID

按下Go按鈕之後，就可以看到LiveSearchPortType服務。

Bing提供三種protocol:

JavaScript Object Notation (JSON)
Extended Markup Language (XML)
SOAP (originally an acronym for Simple Object Access Protocol)

http://msdn.microsoft.com/en-us/library/dd251062.aspx

這裡我們以SOAP來作為範例。

在畫面上，我們拖拉一個TextBox、一個按鈕以及一個ListBox。

然後，我們參考MSDN上的sample code，做了一些調整:

protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { using (LiveSearchPortTypeClient service = new LiveSearchPortTypeClient()) { try { SearchRequest request = BuildRequestWeb(); // Send the request; display the response. SearchResponse response = service.Search(request); DisplayResponseWeb(response); } catch (System.Net.WebException ex) { // An exception occurred while accessing the network. Console.WriteLine(ex.Message); } } } private SearchRequest BuildRequestWeb() { SearchRequest request = new SearchRequest(); // Common request fields (required) request.AppId = "APPID"; request.Query = TextBox1.Text.Trim(); request.Sources = new SourceType[] { SourceType.Web }; // Common request fields (optional) request.Version = "2.0"; request.Market = "zh-tw"; request.Adult = AdultOption.Moderate; request.AdultSpecified = true; request.Options = new SearchOption[] { SearchOption.EnableHighlighting }; // Web-specific request fields (optional) request.Web = new WebRequest(); request.Web.Count = 30; request.Web.CountSpecified = true; request.Web.Offset = 0; request.Web.OffsetSpecified = true; request.Web.Options = new WebSearchOption[] { WebSearchOption.DisableHostCollapsing, WebSearchOption.DisableQueryAlterations }; return request; } private void DisplayResponseWeb(SearchResponse response) { ListBox1.Items.Clear(); ListBox1.Items.Add("Bing API Version " + response.Version); ListBox1.Items.Add("Web results for " + response.Query.SearchTerms); ListBox1.Items.Add(string.Format("Displaying {0} to {1} of {2} results", response.Web.Offset + 1, response.Web.Offset + response.Web.Results.Length, response.Web.Total)); // Display the Web results. System.Text.StringBuilder builder = new System.Text.StringBuilder(); foreach (WebResult result in response.Web.Results) { builder.Length = 0; builder.AppendLine(result.Title); builder.AppendLine(result.Description); builder.AppendLine(result.Url); builder.Append("Last Crawled: "); builder.AppendLine(result.DateTime); ListBox1.Items.Add(builder.ToString()); } }

其中有些是必填屬性，有些是選擇性： http://msdn.microsoft.com/en-us/library/dd250898.aspx