HttpWebRequest简单使用
摘要
HttpWebRequest类对WebRequest中定义的属性和方法提供支持，也对使用户能够直接与使用HTTP的服务器交互的附加属性和方法提供支持。
创建HttpWebRequest实例时，使用WebRequest.Create方法。如果统一资源标示符的方案是http://或https://,则Create返回HttpWebRequest对象。
GetResponse方法向RequestUri属性中指定的资源发送同步请求，并返回包含该响应的HttpWebResponse。可以使用BeginGetResponse和EndGetResponse方法对资源发出异步请求.
当想要资源发送数据时，GetRequestStream方法返回用于发送数据的Stream对象。BeginGetRequestStream和EndGetRequestStream方法提供发送数据流的异步访问。
发送Get请求
public static void main() { //建立请求 HttpWebRequest request=(HttpWebRequest)WebRequest.Create(""); //发送请求获取Http响应 HttpWebRequest response=(HttpWebRequest)request.GetResponse(); //获取响应流 Stream receiveStream =response.GetResponseStream(); StreamReader reader =new StreamReader(receiveStr) reader.ReadToEnd(); }
发送Post请求
public static void main() { //建立请求 HttpWebRequest request =(HttpWebRequest)WebRequest.Create(""); request.Method="post";
httpRequest.Headers.Add("Token", "……"); string inputData=Console.ReadLine(); string postData=inputData; ASCIIEncoding encoding = new ASCIIeNCoding(); byte[] byte1= encoding.GetBytes(postData); request.ContentType="application/x-www-form-urlencoded"; Stream newstream= request.GetRequestStream(); newStream.Write(byte1,0,byte1.Length); HttpWebResponse HttpWResp = (HttpWebResponse)httpRequest.GetResponse(); Stream responseStream = HttpWResp.GetResponseStream(); StreamReader sr = new StreamReader(responseStream, Encoding.UTF8); string result = sr.ReadToEnd(); }
public static string GetShortUrl(string url) { string paramstr = "{\"url\":\"" + url + "\"}"; string api = "https://dwz.cn/admin/v2/create"; Stream responseStream = null; StreamReader sr = null; Stream requestStream = null; string result = null; byte[] data = Encoding.UTF8.GetBytes(paramstr); try { HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(api); httpRequest.ContentType = "application/json"; httpRequest.Method = "POST"; httpRequest.Headers.Add("Token", ""); //发送数据 httpRequest.ContentLength = data.Length; requestStream = httpRequest.GetRequestStream(); requestStream.Write(data, 0, data.Length); requestStream.Flush(); //获取响应内容 HttpWebResponse HttpWResp = (HttpWebResponse)httpRequest.GetResponse(); responseStream = HttpWResp.GetResponseStream(); sr = new StreamReader(responseStream, Encoding.UTF8); result = sr.ReadToEnd(); } catch (Exception e) { } finally { if (sr != null) sr.Close(); if (responseStream != null) responseStream.Close(); if (requestStream != null) requestStream.Close(); } if (!string.IsNullOrEmpty(result)) { LitJson.JsonData json = LitJson.JsonMapper.ToObject(result); return json["ShortUrl"].ToString(); } return url; }
HttpWebRequest类对WebRequest中定义的属性和方法提供支持，也对使用户能够直接与使用HTTP的服务器交互的附加属性和方法提供支持。
创建HttpWebRequest实例时，使用WebRequest.Create方法。如果统一资源标示符的方案是http://或https://,则Create返回HttpWebRequest对象。
GetResponse方法向RequestUri属性中指定的资源发送同步请求，并返回包含该响应的HttpWebResponse。可以使用BeginGetResponse和EndGetResponse方法对资源发出异步请求.
当想要资源发送数据时，GetRequestStream方法返回用于发送数据的Stream对象。BeginGetRequestStream和EndGetRequestStream方法提供发送数据流的异步访问。
发送Get请求
public static void main() { //建立请求 HttpWebRequest request=(HttpWebRequest)WebRequest.Create(""); //发送请求获取Http响应 HttpWebRequest response=(HttpWebRequest)request.GetResponse(); //获取响应流 Stream receiveStream =response.GetResponseStream(); StreamReader reader =new StreamReader(receiveStr) reader.ReadToEnd(); }
发送Post请求
public static void main() { //建立请求 HttpWebRequest request =(HttpWebRequest)WebRequest.Create(""); request.Method="post";
httpRequest.Headers.Add("Token", "……"); string inputData=Console.ReadLine(); string postData=inputData; ASCIIEncoding encoding = new ASCIIeNCoding(); byte[] byte1= encoding.GetBytes(postData); request.ContentType="application/x-www-form-urlencoded"; Stream newstream= request.GetRequestStream(); newStream.Write(byte1,0,byte1.Length); HttpWebResponse HttpWResp = (HttpWebResponse)httpRequest.GetResponse(); Stream responseStream = HttpWResp.GetResponseStream(); StreamReader sr = new StreamReader(responseStream, Encoding.UTF8); string result = sr.ReadToEnd(); }
public static string GetShortUrl(string url) { string paramstr = "{\"url\":\"" + url + "\"}"; string api = "https://dwz.cn/admin/v2/create"; Stream responseStream = null; StreamReader sr = null; Stream requestStream = null; string result = null; byte[] data = Encoding.UTF8.GetBytes(paramstr); try { HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(api); httpRequest.ContentType = "application/json"; httpRequest.Method = "POST"; httpRequest.Headers.Add("Token", ""); //发送数据 httpRequest.ContentLength = data.Length; requestStream = httpRequest.GetRequestStream(); requestStream.Write(data, 0, data.Length); requestStream.Flush(); //获取响应内容 HttpWebResponse HttpWResp = (HttpWebResponse)httpRequest.GetResponse(); responseStream = HttpWResp.GetResponseStream(); sr = new StreamReader(responseStream, Encoding.UTF8); result = sr.ReadToEnd(); } catch (Exception e) { } finally { if (sr != null) sr.Close(); if (responseStream != null) responseStream.Close(); if (requestStream != null) requestStream.Close(); } if (!string.IsNullOrEmpty(result)) { LitJson.JsonData json = LitJson.JsonMapper.ToObject(result); return json["ShortUrl"].ToString(); } return url; }