1、不帶參數的POST請求
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public static string Post(string url) { string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); //獲取內容 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8)) { result = reader.ReadToEnd(); } return result; } |
2、帶參數的POST請求
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public static string Post(string url,Dictionary<string,string> dic) { string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "POST"; req.ContentType = "application/x-www-form-urlencoded"; #region 添加Post 參數 StringBuilder builder = new StringBuilder(); int i = 0; foreach (var item in dic) { if (i > 0) builder.Append("&"); builder.AppendFormat("{0}={1}", item.Key, item.Value); i++; } byte[] data = Encoding.UTF8.GetBytes(builder.ToString()); req.ContentLength = data.Length; using (Stream reqStream = req.GetRequestStream()) { reqStream.Write(data, 0, data.Length); reqStream.Close(); } #endregion HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); //獲取響應內容 using (StreamReader reader = new StreamReader(stream, Encoding.UTF8)) { result = reader.ReadToEnd(); } return result; } |
3、不帶參數的GET請求
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public static string Get(string url) { string result = ""; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); try { //獲取內容 using (StreamReader reader = new StreamReader(stream)) { result = reader.ReadToEnd(); } } finally { stream.Close(); } return result; } |
4、帶參數的GET請求
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public static string Get(string url, Dictionary<string, string> dic) { string result = ""; StringBuilder builder = new StringBuilder(); builder.Append(url); if (dic.Count > 0) { builder.Append("?"); int i = 0; foreach (var item in dic) { if (i > 0) builder.Append("&"); builder.AppendFormat("{0}={1}", item.Key, item.Value); i++; } } HttpWebRequest req = (HttpWebRequest)WebRequest.Create(builder.ToString()); //添加參數 HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); try { //獲取內容 using (StreamReader reader = new StreamReader(stream)) { result = reader.ReadToEnd(); } } finally { stream.Close(); } return result; } |
5、自定義HTTP請求頭
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HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.Method = "GET"; req.Headers["Accept-Language"] = "zh-CN,zh;q=0.8"; req.Referer = "https://www.baidu.com/"; HttpWebResponse resp = (HttpWebResponse)req.GetResponse(); Stream stream = resp.GetResponseStream(); string result = ""; //注意，此處使用的編碼是：gb2312 //using (StreamReader reader = new StreamReader(stream, Encoding.Default)) using (StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("gb2312"))) { result = reader.ReadToEnd(); } |
原文鏈接：https://blog.csdn.net/xishining/article/details/80809747
