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引言
记录一下调用Web API的几种方式,以调用百度API为例.
HttpWebRequest
HttpWebRequest位于System.Net命名空间,是常用的调用Web API类库.
string strURL = "http://apis.baidu.com/apistore/weatherservice/citylist?cityname=" + HttpUtility.UrlEncode("北京"); HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL); request.Method = "GET"; request.Headers.Add("apikey", "XXXXXXXXXXXXXXXXXXXXXXXXXX"); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); Stream s = response.GetResponseStream(); StreamReader Reader = new StreamReader(s); string result = Reader.ReadToEnd();
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HttpWebRequest 类
在C#用HttpWebRequest中发送GET/HTTP/HTTPS请求
string strURL = "http://apis.baidu.com/apistore/weatherservice/citylist?cityname=" + HttpUtility.UrlEncode("北京"); HttpClient client = new HttpClient(); client.DefaultRequestHeaders.Add("apikey", "xxxxxxxxxxxxxxx"); HttpResponseMessage response = await client.PostAsync(strURL, null); string reslut = await response.Content.ReadAsStringAsync();
参考链接
RestSharp
RestSharp是GitHub上的一个开源类库,用法简单方便,值得推荐.
RestClient restClient = new RestClient("http://apis.baidu.com/apistore/weatherservice/citylist"); RestRequest restRequest = new RestRequest(Method.GET); restRequest.AddQueryParameter("cityname", "北京"); restRequest.AddHeader("apikey", "xxxxxxxxxxxxxxx"); string reslut = restClient.Execute(restRequest).Content;
参考链接
小结
上文简单介绍了3个方式的用法,后面两种深度封装,使用起来很方便.性能上,我简单测试了一下,循环调用100次,耗费都是7秒多.
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原文地址：http://www.cnblogs.com/caizl/p/4781074.html
