必应Bing API实战初体验（bing api接口）-编程开发-知优网

Bing正式发布没几天，除了功能和搜索结果外，作为开发者来说，我们关心的还有Bing API啥时候能出。周末浏览MSDN网站时，发现Bing Service已经上线了，本文为大家做一个初步介绍。

Bing供给的API很丰厚，除了查找外，还增加了广告Ad、图片、新闻、Phonebook、拼写和视频的查找。而拜访协议有三种：JSON, XML和SOAP。JSON协议用于AJAX运用，XML用于Silverlight运用，SOAP用于传统的.NET等强类型程序。可见，微软在推出API方面仍是很有功率的。

运用Bing API的***步，是去Bing Developer Center上请求一个AppId，每个运用应该运用一个独自的AppId。Bing Developer Center的网址是：http://Bing.com/developers 。在页面里先用Live ID登录，然后挑选Get a new App ID，填写一些基本信息，然后你就会得到一串很长的AppId。需求留意的是，Bing还有一个网址是http://www.bing.com/developer/，估量是为1.1版别预备的，现在还不能请求AppId。咱们一定要分清楚。

接下来，咱们在Visual Studio 2008里创立一个.NET运用。在Project菜单里挑选Add Service Reference，在弹出对话框的Address文本框里填入：

http://API.search.live.net/search.wsdl?AppID=yourAppId

留意：AppID=后要填写你请求到的AppId.

在找到LiveSearchService的引证后，将其添加到咱们的工程中。接下来，我依据PhoneBook和WebSearch两个比如写了DEMO，更多比如能够参阅：

http://msdn.microsoft.com/en-us/library/dd251066.aspx

需求提示的是，可能是文档没有更新，Bing API的类称号还会发生变化。我发现在2009年6月8日导出的引证中，LiveSearchService的称号变成了LiveSearchPortTypeClient。Web Search的代码如下：

   privatevoid button2_Click(object sender, EventArgs e)
        {
            // LiveSearchService implements IDisposable.
            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 = "马宁";
            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)
        {
            // Display the results header.
            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());
                Console.WriteLine();
            }
        }

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从代码上来看，很简单，先创立一个LiveSearchPortTypeClient的目标，然后，创立SearchRequest目标，在Request里需求设置的是AppId,Query和Sources。AppId不必多说了，Query里填咱们要查的关键字，Sources里指定SourceType，咱们这儿指定的是SourceType.Web。