Http请求基本方法

/// <summary> ???????/// Http请求基本方法 ???????/// </summary> ???????/// <param name="content"></param> ???????/// <param name="url"></param> ???????/// <param name="method"></param> ???????/// <param name="data"></param> ???????/// <param name="referer"></param> ???????/// <param name="contentTp"></param> ???????/// <param name="headers"></param> ???????/// <returns></returns> ???????public bool Request(ref string content, string url, string method, byte[] data, string referer = "", string contentTp = "", NameValueCollection headers = null) ???????{ ???????????HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url); ???????????request.Method = method; ???????????request.Timeout = Timeout; ???????????request.AllowAutoRedirect = false; ???????????request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60"; ???????????request.Headers.Add("Accept-Language", "zh-TW,en;q=0.8,zh-CN;q=0.7,zh;q=0.5,zh-HK;q=0.3,en-US;q=0.2"); ???????????request.Headers.Add("Accept-Encoding", "gzip,deflate"); ??/// gzip 如何判断并且解码 测试是否可以暂时先注释 ?https://www.crifan.com/set_accept_encoding_header_to_gzip_deflate_return_messy_code/ ???????????request.AutomaticDecompression = DecompressionMethods.GZip; ???????????request.Headers.Add("Cache-Control", "max-age=0"); ???????????request.KeepAlive = true; ???????????if (Proxy != null) ???????????{ ???????????????request.Proxy = Proxy; ???????????} ???????????if (!string.IsNullOrEmpty(referer)) ???????????{ ???????????????request.Referer = referer; ???????????} ???????????if (headers != null && headers.Count > 0) ???????????{ ???????????????foreach (string key in headers.AllKeys) ???????????????{ ???????????????????request.Headers.Add(key, headers[key]); ???????????????} ???????????} ???????????if (cookieContainer == null) ???????????{ ???????????????cookieContainer = new CookieContainer(); ???????????????request.CookieContainer = cookieContainer; ???????????} ???????????else ???????????{ ???????????????request.CookieContainer = cookieContainer; ???????????} ???????????if (method.ToLower() == "post") ???????????{ ???????????????request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; ???????????????request.Headers.Add("Upgrade-Insecure-Requests", "1"); ???????????????request.ContentType = contentTp; ???????????????if (data != null && data.Length > 0) ???????????????{ ???????????????????request.ContentLength = data.Length; ???????????????????using (Stream stream = request.GetRequestStream()) ???????????????????{ ???????????????????????stream.Write(data, 0, data.Length); ???????????????????} ???????????????} ???????????} ???????????else ???????????{ ???????????????request.Accept = "text/html,application/xhtml+xm…plication/xml;q=0.9,*/*;q=0.8"; ???????????} ???????????ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); ???????????System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12; ???????????try ???????????{ ???????????????using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) ???????????????{ ???????????????????if (headers != null && headers.Count > 0) ???????????????????{ ???????????????????????foreach (string key in headers.AllKeys) ???????????????????????{ ???????????????????????????response.Headers.Add(key, headers[key]); ???????????????????????} ???????????????????} ???????????????????if (response.StatusCode == HttpStatusCode.OK || response.StatusCode == HttpStatusCode.RedirectMethod || response.StatusCode == HttpStatusCode.Found || response.StatusCode == HttpStatusCode.Moved || response.StatusCode == HttpStatusCode.Redirect) ???????????????????{ ???????????????????????if (response.StatusCode == HttpStatusCode.Found || response.StatusCode == HttpStatusCode.RedirectMethod || response.StatusCode == HttpStatusCode.Moved || response.StatusCode == HttpStatusCode.Redirect) ???????????????????????{ ???????????????????????????string redirectUrl = GetRedirectUrl(url, response.Headers["Location"]); ???????????????????????????return Request(ref content, redirectUrl, "GET", null, url, contentTp); ???????????????????????} ???????????????????????Stream stream = response.GetResponseStream(); ???????????????????????StreamReader streamReader = new StreamReader(stream, defaultEncoding); ???????????????????????content = streamReader.ReadToEnd(); ???????????????????????streamReader.Close(); ???????????????????????stream.Close(); ???????????????????????response.Close(); ???????????????????????return true; ???????????????????} ???????????????????else ???????????????????{ ???????????????????????return false; ???????????????????} ???????????????} ???????????} ???????????catch (WebException e) ???????????{ ???????????????var res = (HttpWebResponse)e.Response; ???????????????StreamReader sr = new StreamReader(res.GetResponseStream()); ???????????????var strHtml = sr.ReadToEnd(); ???????????????if (e.Response != null) ???????????????{ ???????????????????using (Stream respStream = e.Response.GetResponseStream()) ???????????????????{ ???????????????????????StreamReader streamReader = new StreamReader(respStream, Encoding.UTF8); ???????????????????????content = streamReader.ReadToEnd(); ???????????????????????streamReader.Close(); ???????????????????????respStream.Close(); ???????????????????????e.Response.Close(); ???????????????????} ???????????????} ???????????????return false; ???????????} ???????????catch (Exception e) ???????????{ ???????????????content = e.Message; ???????????????return false; ???????????} ???????}

/// <summary> ???????/// 跳转时，获取跳转URL ???????/// </summary> ???????/// <param name="url"></param> ???????/// <param name="location"></param> ???????/// <returns></returns> ???????public static string GetRedirectUrl(string url, string location) ???????{ ???????????try ???????????{ ???????????????if (location.StartsWith("https://") || location.StartsWith("http://")) ???????????????????return location; ???????????????string newUrl = url; ???????????????if (location.StartsWith("/")) ???????????????{ ???????????????????newUrl = url.Substring(0, url.Substring(8).IndexOf("/") + 8); ???????????????????return newUrl + location; ???????????????} ???????????????else if (location.StartsWith("../")) ???????????????{ ???????????????????while (location.StartsWith("../")) ???????????????????{ ???????????????????????if (newUrl.IndexOf("/") > 0) ???????????????????????{ ???????????????????????????newUrl = newUrl.Substring(0, newUrl.LastIndexOf("/")); ???????????????????????} ???????????????????????location = location.Substring(3); ???????????????????} ???????????????????return newUrl + "/" + location; ???????????????} ???????????????else if (location.StartsWith("./")) ???????????????{ ???????????????????if (newUrl.IndexOf("/") > 0) ???????????????????{ ???????????????????????newUrl = newUrl.Substring(0, newUrl.LastIndexOf("/")); ???????????????????} ???????????????????location = location.Substring(2); ???????????????????return newUrl + "/" + location; ???????????????} ???????????????else ???????????????{ ???????????????????if (newUrl.IndexOf("/") > 0) ???????????????????{ ???????????????????????newUrl = newUrl.Substring(0, newUrl.LastIndexOf("/")); ???????????????????} ???????????????????return newUrl + "/" + location; ???????????????} ???????????} ???????????catch ???????????{ ???????????????return url; ???????????} ???????}

 /// <summary> ???????/// 带文件的Form提交 ???????/// </summary> ???????/// <param name="content"></param> ???????/// <param name="url"></param> ???????/// <param name="formData"></param> ???????/// <param name="referer"></param> ???????/// <returns></returns> ???????public bool FileRequest(ref string content, string url, List<FormItem> formData, string referer, string lang = "zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2") ???????{ ???????????try ???????????{ ???????????????string boundary = "---------------------------255132704032490"; //+ DateTime.Now.Ticks.ToString(); ???????????????HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); ???????????????request.KeepAlive = true; ???????????????request.CookieContainer = cookieContainer; ???????????????request.ContentType = "multipart/form-data; boundary=" + boundary; ???????????????request.Method = "POST"; ???????????????request.Timeout = Timeout; ???????????????request.AllowAutoRedirect = false; ???????????????request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0"; ???????????????request.Headers.Add("Accept-Language", lang); ???????????????request.Headers.Add("Accept-Encoding", "deflate, br"); ???????????????request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; ???????????????request.Headers.Add("Upgrade-Insecure-Requests", "1"); ???????????????if (!string.IsNullOrEmpty(referer)) ???????????????????request.Referer = referer; ???????????????if (Proxy != null) ???????????????{ ???????????????????request.Proxy = Proxy; ???????????????} ???????????????ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); ???????????????System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12; ???????????????byte[] bdBytes = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n"); ???????????????byte[] brBytes = Encoding.UTF8.GetBytes("\r\n"); ???????????????long length = bdBytes.Length; ???????????????MemoryStream mStream = new MemoryStream(); ???????????????foreach (var item in formData) ???????????????{ ???????????????????StringBuilder sb = new StringBuilder(); ???????????????????if (item.IsFile) ???????????????????{ ???????????????????????if (string.IsNullOrWhiteSpace(item.FilePath)) ???????????????????????{ ???????????????????????????sb.Append($"--{boundary}\r\n"); ???????????????????????????sb.Append($"Content-Disposition: form-data; name=\"{item.Name}\"; filename=\"{item.FileName}\"\r\n"); ???????????????????????????sb.Append($"Content-Type: {item.ContentTp}"); ???????????????????????????sb.Append("\r\n"); ???????????????????????????sb.Append("\r\n"); ???????????????????????????sb.Append("\r\n"); ???????????????????????} ???????????????????????else ???????????????????????{ ???????????????????????????if (string.IsNullOrWhiteSpace(item.FileName)) ???????????????????????????{ ???????????????????????????????sb.Append("--"); ???????????????????????????????sb.Append(boundary); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("Content-Disposition: form-data; name=\""); ???????????????????????????????sb.Append(item.Name); ???????????????????????????????sb.Append("\"; filename=\""); ???????????????????????????????sb.Append(System.IO.Path.GetFileName(item.FilePath)); ???????????????????????????????sb.Append("\""); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("Content-Type: "); ???????????????????????????????sb.Append(item.ContentTp); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????} ???????????????????????????else ???????????????????????????{ ???????????????????????????????sb.Append("--"); ???????????????????????????????sb.Append(boundary); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("Content-Disposition: form-data; name=\""); ???????????????????????????????sb.Append(item.Name); ???????????????????????????????sb.Append("\"; filename=\""); ???????????????????????????????sb.Append(item.FileName); ???????????????????????????????sb.Append("\""); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("Content-Type: "); ???????????????????????????????sb.Append(item.ContentTp); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????????sb.Append("\r\n"); ???????????????????????????} ???????????????????????} ???????????????????} ???????????????????else ???????????????????{ ???????????????????????sb.Append("--"); ???????????????????????sb.Append(boundary); ???????????????????????sb.Append("\r\n"); ???????????????????????sb.Append("Content-Disposition: form-data; name=\""); ???????????????????????sb.Append(item.Name); ???????????????????????sb.Append("\""); ???????????????????????sb.Append("\r\n"); ???????????????????????sb.Append("\r\n"); ???????????????????????sb.Append(item.Value); ???????????????????????sb.Append("\r\n"); ???????????????????} ???????????????????string formTxt = sb.ToString(); ???????????????????byte[] data = Encoding.UTF8.GetBytes(formTxt); ???????????????????mStream.Write(data, 0, data.Length); ???????????????????length += data.Length; ???????????????????if (item.IsFile) ???????????????????{ ???????????????????????if (!string.IsNullOrWhiteSpace(item.FilePath)) ???????????????????????{ ???????????????????????????FileStream stream = new FileStream(item.FilePath, FileMode.Open, FileAccess.Read); ???????????????????????????length += stream.Length; ???????????????????????????byte[] buffer = new Byte[checked((uint)Math.Min(4096, (int)stream.Length))]; ???????????????????????????int nRead = 0; ???????????????????????????while ((nRead = stream.Read(buffer, 0, buffer.Length)) != 0) ???????????????????????????{ ???????????????????????????????mStream.Write(buffer, 0, nRead); ???????????????????????????} ???????????????????????????mStream.Write(brBytes, 0, brBytes.Length); ???????????????????????????length += brBytes.Length; ???????????????????????} ???????????????????} ???????????????} ???????????????/// 循环结束，需要增加结束标记 长度之前已经默认 ???????????????mStream.Write(bdBytes, 0, bdBytes.Length); ???????????????mStream.Flush(); ???????????????request.ContentLength = length; ???????????????long n = mStream.Length; ???????????????using (Stream stream = request.GetRequestStream()) ???????????????{ ???????????????????/// 回头需要校验代码 ???????????????????byte[] data = mStream.GetBuffer(); ???????????????????stream.Write(data, 0, (int)mStream.Length); ???????????????} ???????????????HttpWebResponse res; ???????????????try ???????????????{ ???????????????????using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) ???????????????????{ ???????????????????????response.Headers.Add("Accept-Language", lang); ???????????????????????string redirectUrl = GetRedirectUrl(url, response.Headers["Location"]); ???????????????????????/// 判断是否跳转 ???????????????????????if (response.StatusCode == HttpStatusCode.Found || response.StatusCode == HttpStatusCode.RedirectMethod || response.StatusCode == HttpStatusCode.Moved || response.StatusCode == HttpStatusCode.Redirect) ???????????????????????{ ???????????????????????????var headers = new NameValueCollection(); ???????????????????????????headers.Add("Accept-Language", lang); ???????????????????????????return Get(ref content, redirectUrl, null, referer, headers); ???????????????????????} ???????????????????????else ???????????????????????{ ???????????????????????????Stream stream = response.GetResponseStream(); ???????????????????????????StreamReader streamReader = new StreamReader(stream, System.Text.Encoding.UTF8); ???????????????????????????content = streamReader.ReadToEnd(); ???????????????????????????streamReader.Close(); ???????????????????????????stream.Close(); ???????????????????????} ???????????????????????response.Close(); ???????????????????????return true; ???????????????????} ???????????????} ???????????????catch (WebException ex) ???????????????{ ???????????????????res = (HttpWebResponse)ex.Response; ???????????????????StreamReader sr = new StreamReader(res.GetResponseStream()); ???????????????????var strHtml = sr.ReadToEnd(); ???????????????????//MainForm.Instance.Console("表单提交：" + e.Message); ???????????????????return false; ???????????????} ???????????} ???????????catch ???????????{ ???????????????//MainForm.Instance.Console("表单提交：" + e.Message); ???????????????return false; ???????????} ???????}

 /// <summary> ???????/// HTTP POST方式请求数据(带图片) ???????/// </summary> ???????/// <param name="url">URL</param> ???????????????/// <param name="param">POST的数据</param> ???????/// <param name="fileByte">图片Byte</param> ???????/// <returns></returns> ???????public string Post(string url, IDictionary<object, object> param, byte[] fileByte) ???????{ ???????????try ???????????{ ???????????????string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x"); ???????????????byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); ???????????????HttpWebRequest wr = (HttpWebRequest)WebRequest.Create(url); ???????????????wr.ContentType = "multipart/form-data; boundary=" + boundary; ???????????????wr.UserAgent = "RK_C# 1.2"; ???????????????wr.Method = "POST"; ???????????????//wr.Timeout = 150000; ???????????????//wr.KeepAlive = true; ???????????????//wr.Credentials = System.Net.CredentialCache.DefaultCredentials; ???????????????Stream rs = null; ???????????????try ???????????????{ ???????????????????rs = wr.GetRequestStream(); ???????????????} ???????????????catch { return "无法连接.请检查网络."; } ???????????????string responseStr = null; ???????????????string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}"; ???????????????foreach (string key in param.Keys) ???????????????{ ???????????????????rs.Write(boundarybytes, 0, boundarybytes.Length); ???????????????????string formitem = string.Format(formdataTemplate, key, param[key]); ???????????????????byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem); ???????????????????rs.Write(formitembytes, 0, formitembytes.Length); ???????????????} ???????????????rs.Write(boundarybytes, 0, boundarybytes.Length); ???????????????string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\nContent-Type: {2}\r\n\r\n"; ???????????????string header = string.Format(headerTemplate, "image", "i.gif", "image/gif");//image/jpeg ???????????????byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header); ???????????????rs.Write(headerbytes, 0, headerbytes.Length); ???????????????rs.Write(fileByte, 0, fileByte.Length); ???????????????byte[] trailer = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--"); ???????????????rs.Write(trailer, 0, trailer.Length); ???????????????rs.Close(); ???????????????WebResponse wresp = null; ???????????????try ???????????????{ ???????????????????wresp = wr.GetResponse(); ???????????????????Stream stream2 = wresp.GetResponseStream(); ???????????????????StreamReader reader2 = new StreamReader(stream2); ???????????????????responseStr = reader2.ReadToEnd(); ???????????????????reader2.Close(); ???????????????????stream2.Close(); ???????????????????reader2.Dispose(); ???????????????????stream2.Dispose(); ???????????????} ???????????????catch ???????????????{ ???????????????????throw; ???????????????} ???????????????finally ???????????????{ ???????????????????if (wresp != null) ???????????????????{ ???????????????????????wresp.Close(); ???????????????????????wresp = null; ???????????????????} ???????????????????wr.Abort(); ???????????????????wr = null; ???????????????} ???????????????return responseStr; ???????????} ???????????catch ???????????{ ???????????????//MainForm.Instance.Console("Ruokuai：" + e.Message); ???????????????return ""; ???????????} ???????}