[How to]Bing API開發初體驗

2009-06-11

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？

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:

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:

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 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 = "申請的AppID";

        request.Query = TextBox1.Text.Trim();

        request.Sources = new SourceType[] { SourceType.Web };

        // Common request fields (optional)

        request.Version = "2.0";

        request.Market = "en-us";

        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());

The following parameters are required for all requests:

The following optional parameters are applicable to this SourceType.

回應的屬性欄位：Response Fields

The following response fields are common to all source types:

The following response fields are specific to the RelatedSearch SourceType:

當我們執行時，可以在TextBox輸入查詢條件：

查中文也可以:

如果把request.Market 改成 "zh-tw"，會發現搜尋結果變多了(142000->154000)(這告訴我們要選對區域阿).

希望這篇文章對您有所幫助. :-)

Response.Write("Hello LOLOTA")