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";
???????????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;
???????}

???????private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
???????{
???????????return true; //总是接受 ?
???????}
???}
}

/// <summary>
???????/// Get获取所有年级
???????/// </summary>
???????private void ClassSendGetHttp()
???????{
???????????string tagUrl = "http://" + serviceIp + "/courseware/grade";
???????????CookieCollection cookies = new CookieCollection();//如何从response.Headers["Set-Cookie"];中获取并设置CookieCollection的代码略 ?
???????????HttpWebResponse response = HttpWebResponseUtility.CreateGetHttpResponse(tagUrl, null, null, null);

???????????Stream stream = response.GetResponseStream(); ???????????????????????//获取响应的字符串流 ?
???????????StreamReader sr = new StreamReader(stream); ?????????????????????????//创建一个stream读取流 ?
???????????string html = sr.ReadToEnd(); ???????????????????????????????????????//从头读到尾，放到字符串html ??

???????????JObject obj = Newtonsoft.Json.Linq.JObject.Parse(html);
????????????string Status = obj["status"].ToString();
????????????if (Status == "0")
????????????{
????????????????JArray jar = JArray.Parse(obj["data"].ToString());
????????????????for (int i = 0; i < jar.Count; i++)
????????????????{
????????????????????JToken js = JToken.Parse(jar[i].ToString());
????????????????????classList.Add(js["gradeName"].ToString());
????????????????}
????????????}
????????????else
????????????{
????????????????MessageBox.Show("年级获取失败");
????????????}

???????}

/// <summary>
???????/// 发送POST请求到HTTP站点
???????/// </summary>
???????private void SendPostHttp()
???????{
???????????string Url = "http://" + serviceIp + "/file/" + lblAddress.Text.ToString();
???????????CoursewareClass courseClass = new CoursewareClass();
???????????courseClass.coverPicture = "";
???????????courseClass.gradeName = cmboxClass.Text.Trim().ToString();
???????????courseClass.imageUrl = "";
???????????courseClass.knowledges = btnKnow.Text.Trim().ToString();
???????????courseClass.name = txtName.Text.Trim().ToString();
???????????courseClass.pageNum = "";
???????????courseClass.pptUrl = lblAddress.Text.Trim().ToString();
???????????courseClass.subjectName = cmboxSubject.Text.Trim().ToString();
???????????courseClass.uploadPersonNo = Global.getValues("TeacherNum");
???????????string str = JsonConvert.SerializeObject(courseClass);
???????????HttpWebResponse response = HttpWebResponseUtility.CreatePostHttpResponse(Url, str, Encoding.UTF8);

???????????Stream stream = response.GetResponseStream(); ???????????????????????//获取响应的字符串流 ?
???????????StreamReader sr = new StreamReader(stream); ?????????????????????????//创建一个stream读取流 ?
???????????string html = sr.ReadToEnd(); ???????????????????????????????????????//从头读到尾，放到字符串html ?
???????????JObject obj = Newtonsoft.Json.Linq.JObject.Parse(html);
???????????string Status = obj["status"].ToString();
???????????if (Status == "0")
???????????{
???????????????string ClassNum = obj["data"]["classNum"].ToString(); ???????????????//获取classNum{"classNum":"10665"}
???????????}

???????}

Http GetPost网络请求

原文地址：http://www.cnblogs.com/Mzg121584668/p/7779616.html