代码：
using System; using System.Collections.Generic; using System.Collections.Specialized; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading; namespace Utils { /// <summary> /// Http上传下载文件 /// </summary> public class HttpUtil { #region HttpDownloadFile 下载文件 /// <summary> /// 下载文件 /// </summary> /// <param name="url">下载文件url路径</param> /// <param name="cookie">cookie</param> public static MemoryStream HttpDownloadFile(string url, CookieContainer cookie = null, WebHeaderCollection headers = null) { try { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.Method = "GET"; request.CookieContainer = cookie; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream responseStream = response.GetResponseStream(); //创建写入流 MemoryStream stream = new MemoryStream(); byte[] bArr = new byte[1024]; int size = responseStream.Read(bArr, 0, (int)bArr.Length); while (size > 0) { stream.Write(bArr, 0, size); size = responseStream.Read(bArr, 0, (int)bArr.Length); } stream.Seek(0, SeekOrigin.Begin); responseStream.Close(); return stream; } catch (Exception ex) { LogUtil.Error(ex); return null; } } #endregion #region HttpUploadFile 上传文件 /// <summary> /// Http上传文件 /// </summary> /// <param name="url">上传文件url路径</param> /// <param name="bArr">byte数据上传文件</param> /// <param name="fileName">文件名称</param> /// <param name="cookie">cookie</param> public static string HttpUploadFile(string url, byte[] bArr, string fileName, CookieContainer cookie = null, WebHeaderCollection headers = null) { try { // 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 = "text/plain;charset=utf-8"; request.CookieContainer = cookie; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } Stream postStream = request.GetRequestStream(); postStream.Write(bArr, 0, bArr.Length); postStream.Close(); //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); instream.Close(); return content; } catch (Exception ex) { LogUtil.Error(ex); return string.Empty; } } #endregion #region HttpPost /// <summary> /// HttpPost /// </summary> /// <param name="url">url路径名称</param> /// <param name="data">需要传输的数据</param> /// <param name="cookie">cookie</param> public static string HttpPost(string url, string data, CookieContainer cookie = null, WebHeaderCollection headers = null) { try { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.CookieContainer = cookie; request.Method = "POST"; request.ContentType = "application/json"; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } if (data != null) { byte[] bArr = ASCIIEncoding.UTF8.GetBytes(data); request.ContentLength = bArr.Length; Stream postStream = request.GetRequestStream(); postStream.Write(bArr, 0, bArr.Length); postStream.Close(); } //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); instream.Close(); return content; } catch (Exception ex) { LogUtil.Error(ex); return string.Empty; } } #endregion #region HttpPost /// <summary> /// HttpPost /// </summary> /// <param name="url">url路径名称</param> /// <param name="cookie">cookie</param> public static string HttpPost(string url, CookieContainer cookie = null, WebHeaderCollection headers = null) { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.CookieContainer = cookie; request.Method = "POST"; request.ContentType = "application/json"; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); instream.Close(); return content; } #endregion #region HttpGet /// <summary> /// HttpGet /// </summary> /// <param name="url">url路径名称</param> /// <param name="cookie">cookie</param> public static string HttpGet(string url, CookieContainer cookie = null, WebHeaderCollection headers = null) { try { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.CookieContainer = cookie; request.Method = "GET"; request.ContentType = "text/plain;charset=utf-8"; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); instream.Close(); return content; } catch (Exception ex) { LogUtil.Error(ex); return string.Empty; } } #endregion #region HttpGet /// <summary> /// HttpGet /// </summary> /// <param name="url">url路径名称</param> /// <param name="cookieOut">传出的cookie</param> /// <param name="cookie">cookie</param> public static string HttpGet(string url, out Cookie cookieOut, CookieContainer cookie = null, WebHeaderCollection headers = null) { try { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; request.CookieContainer = cookie; request.Method = "GET"; request.ContentType = "text/plain;charset=utf-8"; if (headers != null) { foreach (string key in headers.Keys) { request.Headers.Add(key, headers[key]); } } //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream instream = response.GetResponseStream(); StreamReader sr = new StreamReader(instream, Encoding.UTF8); //返回结果网页（html）代码 string content = sr.ReadToEnd(); instream.Close(); //获取Cookie CookieCollection cookieCollection = request.CookieContainer.GetCookies(request.RequestUri); if (cookieCollection != null && cookieCollection.Count > 0) { cookieOut = cookieCollection[0]; } else { cookieOut = null; } return content; } catch (Exception ex) { LogUtil.Error(ex); cookieOut = null; return string.Empty; } } #endregion } }
标签：HTTP Post