正文
【.Net】调用Web API的几种方式
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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();
参考链接
HttpWebRequest 类
在C#用HttpWebRequest中发送GET/HTTP/HTTPS请求
httpwebrequest详解
HttpClient HttpClient 是位于System.Net.Http.HttpClient命名空间下,里面的调用都是异步的,用法也很简单. 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();
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
C#中HttpClient使用注意：预热与长连接
.Net 4.5中的HttpClient试用
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
RestSharp
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.
