Http GetPost网络请求
using Newtonsoft.Json; using System; using System.Collections.Generic; using System.IO; using System.Net; using System.Net.Security; using System.Security.Cryptography.X509Certificates; using System.Text; namespace ZhuoHuiSchoolRoom.ZhuoHuiClass { class HttpWebResponseUtility { private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"; /// <summary> /// 创建GET方式的HTTP请求 /// </summary> /// <param name="url">请求的URL</param> /// <param name="timeout">请求的超时时间</param> /// <param name="userAgent">请求的客户端浏览器信息,可以为空</param> /// <param name="cookies">随同HTTP请求发送的Cookie信息,如果不需要身份验证可以为空</param> /// <returns></returns> public static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies) { if (string.IsNullOrEmpty(url)) { throw new ArgumentNullException("url"); } HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.Method = "GET"; request.UserAgent = DefaultUserAgent; if (!string.IsNullOrEmpty(userAgent)) { request.UserAgent = userAgent; } if (timeout.HasValue) { request.Timeout = timeout.Value; } if (cookies != null) { request.CookieContainer = new CookieContainer(); request.CookieContainer.Add(cookies); } return request.GetResponse() as HttpWebResponse; } /// <summary> /// 创建POST方式的HTTP请求 /// </summary> /// <param name="url">请求的URL</param> /// <param name="str">json字符串</param> /// <param name="requestEncoding">发送HTTP请求时所用的编码</param> /// <returns></returns> public static HttpWebResponse CreatePostHttpResponse(string url, string str, Encoding requestEncoding) { if (string.IsNullOrEmpty(url)) { throw new ArgumentNullException("url"); } if (requestEncoding == null) { throw new ArgumentNullException("requestEncoding"); } HttpWebRequest request = null; request = WebRequest.Create(url) as HttpWebRequest; request.Method = "POST"; request.ContentType = "application/json;charset=utf-8"; request.UserAgent = DefaultUserAgent; byte[] data = requestEncoding.GetBytes(str.ToString()); //将json转为二进制流 using (Stream stream = request.GetRequestStream()) { stream.Write(data, 0, data.Length); } return request.GetResponse() as HttpWebResponse; } /// <summary> /// 创建DELETE方式的HTTP请求 /// </summary> /// <param name="url">请求地址</param> /// <returns></returns> public static HttpWebResponse CreateDeleteHttpResponse(string url) { HttpWebRequest request = null; string urlPath = url; int millisecond = 30000; request = (HttpWebRequest)WebRequest.Create(urlPath); //request.Proxy = null;//关闭代理(重要) request.Timeout = millisecond; request.Method = "DELETE"; //request.Accept = "application/json"; //request.ContentType = "application/json"; request.ServicePoint.Expect100Continue = false; return request.GetResponse() as HttpWebResponse; } private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; //总是接受 } /// <summary> /// HttpPost上传多个文件 /// </summary> /// <param name="url">请求地址</param> /// <param name="pathList">路径集合</param> /// <returns></returns> public static HttpWebResponse HttpUploadFile(string url, List<string> pathList) { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; CookieContainer cookieContainer = new CookieContainer(); request.CookieContainer = cookieContainer; request.AllowAutoRedirect = true; request.Method = "POST"; string boundary = "----" + DateTime.Now.Ticks.ToString("x"); // 随机分隔线 request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary; byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n"); byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n"); Stream postStream = request.GetRequestStream(); for (int i = 0; i < pathList.Count; i++) { int pos = pathList[i].LastIndexOf("\\"); string fileName = pathList[i].Substring(pos + 1); //取文件名 //请求头部信息 StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName)); byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString()); FileStream fs = new FileStream(pathList[i], FileMode.Open, FileAccess.Read); byte[] bArr = new byte[fs.Length]; fs.Read(bArr, 0, bArr.Length); fs.Close(); postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length); postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); postStream.Write(bArr, 0, bArr.Length); } postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length); postStream.Close(); //发送请求并获取相应回应数据 return request.GetResponse() as HttpWebResponse; } } }