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Bing提供的API很豐富,除了搜索外,還增加了廣告Ad、圖片、新聞、Phonebook、拼寫(xiě)和視頻的搜索。而訪問(wèn)協(xié)議有三種:JSON, XML和SOAP。JSON協(xié)議用于AJAX應(yīng)用,XML用于Silverlight應(yīng)用,SOAP用于傳統(tǒng)的.NET等強(qiáng)類型程序??梢?jiàn),微軟在推出API方面還是很有效率的。

使用Bing API的***步,是去Bing Developer Center上申請(qǐng)一個(gè)AppId,每個(gè)應(yīng)用應(yīng)該使用一個(gè)單獨(dú)的AppId。Bing Developer Center的網(wǎng)址是:http://bing.com/developers 。在頁(yè)面里先用Live ID登錄,然后選擇Get a new App ID,填寫(xiě)一些基本信息,然后你就會(huì)得到一串很長(zhǎng)的AppId。需要注意的是,Bing還有一個(gè)網(wǎng)址是http://www.bing.com/developer/,估計(jì)是為1.1版本準(zhǔn)備的,現(xiàn)在還不能申請(qǐng)AppId。大家一定要分清楚。
接下來(lái),我們?cè)赩isual Studio 2008里創(chuàng)建一個(gè).NET應(yīng)用。在Project菜單里選擇Add Service Reference,在彈出對(duì)話框的Address文本框里填入:
http://api.search.live.net/search.wsdl?AppID=yourAppId
注意:AppID=后要填寫(xiě)你申請(qǐng)到的AppId.
在找到LiveSearchService的引用后,將其添加到我們的工程中。接下來(lái),我根據(jù)PhoneBook和WebSearch兩個(gè)例子寫(xiě)了DEMO,更多例子可以參考:
http://msdn.microsoft.com/en-us/library/dd251066.aspx
需要提醒的是,可能是文檔沒(méi)有更新,Bing API的類名稱還會(huì)發(fā)生變化。我發(fā)現(xiàn)在2009年6月8日導(dǎo)出的引用中,LiveSearchService的名稱變成了LiveSearchPortTypeClient。Web Search的代碼如下:
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 = "馬寧";
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();
}
}.csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }
從代碼上來(lái)看,很簡(jiǎn)單,先創(chuàng)建一個(gè)LiveSearchPortTypeClient的對(duì)象,然后,創(chuàng)建SearchRequest對(duì)象,在Request里需要設(shè)置的是AppId,Query和Sources。AppId不用多說(shuō)了,Query里填我們要查的關(guān)鍵字,Sources里指定SourceType,我們這里指定的是SourceType.Web。
將SearchRequest參數(shù)傳遞給LiveSearchPortTypeClient的Search方法,會(huì)返回一個(gè)SearchResponse的對(duì)象,里邊包含我們的搜索結(jié)果。結(jié)果會(huì)包含在response.Web.Results對(duì)象里,最主要的參數(shù)是Title、Description和Url。
***的運(yùn)行結(jié)果就是這樣的了:
Bing的好壞還需要時(shí)間檢驗(yàn),但是Bing API和Google API應(yīng)該差不多,而且考慮了不同用戶的需求,這也許就是軟件公司和互聯(lián)網(wǎng)公司不一樣的地方。同時(shí)推出的還有Bing Map API,改天試一下。
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責(zé)任編輯:彭凡
來(lái)源: cnblogs Bing API 體驗(yàn)
標(biāo)題名稱:必應(yīng)Bing API實(shí)戰(zhàn)初體驗(yàn)
文章位置:http://m.5511xx.com/article/dpjhsdh.html


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