C# POST与Get数据

引用DLL

普通Get数据和Post数据

   public static string Get(string URL)
        {
            String ReCode = string.Empty;
            try
            {
                HttpWebRequest wNetr = (HttpWebRequest)HttpWebRequest.Create(URL);
                HttpWebResponse wNetp = (HttpWebResponse)wNetr.GetResponse();
                wNetr.ContentType = "text/html";
                wNetr.Method = "Get";
                Stream Streams = wNetp.GetResponseStream();
                StreamReader Reads = new StreamReader(Streams, Encoding.UTF8);
                ReCode = Reads.ReadToEnd();

                //封闭临时不实用的资料 
                Reads.Dispose();
                Streams.Dispose();
                wNetp.Close();
            }
            catch (Exception ex) { throw ex; }

            return ReCode;

        }

        public static string Post(string url, string data)
        {
            string returnData = null;
            try
            {
                //byte[] buffer = Encoding.UTF8.GetBytes(data);
                //HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(url);
                //webReq.Method = "POST";
                //webReq.ContentType = "application/x-www-form-urlencoded";
                //webReq.ContentLength = buffer.Length;
                //Stream postData = webReq.GetRequestStream();
                //webReq.Timeout = 99999999;
                ////webReq.ReadWriteTimeout = 99999999;
                //postData.Write(buffer, 0, buffer.Length);
                //postData.Close();
                //HttpWebResponse webResp = (HttpWebResponse)webReq.GetResponse();
                //Stream answer = webResp.GetResponseStream();
                //StreamReader answerData = new StreamReader(answer);
                //returnData = answerData.ReadToEnd();

                string strURL = url;
                System.Net.HttpWebRequest request;
                request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
                request.Method = "POST";
                request.ContentType = "application/json;charset=UTF-8";
                string paraUrlCoded = data;
                byte[] payload;
                payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
                request.ContentLength = payload.Length;
                Stream writer = request.GetRequestStream();
                writer.Write(payload, 0, payload.Length);
                writer.Close();
                System.Net.HttpWebResponse response;
                response = (System.Net.HttpWebResponse)request.GetResponse();
                System.IO.Stream s;
                s = response.GetResponseStream();
                string StrDate = "";
                string strValue = "";
                StreamReader Reader = new StreamReader(s, Encoding.UTF8);
                while ((StrDate = Reader.ReadLine()) != null)
                {
                    strValue += StrDate + "
";
                }
                returnData = strValue;
            }
            catch
            {
                return "获取错误";
            }
            return returnData.Trim() + "
";
        }
        /// <summary>
        /// 将json数据反序列化为Dictionary
        /// </summary>
        /// <param name="jsonData">json数据</param>
        /// <returns></returns>
        public static Dictionary<string, object> JsonToDictionary(string jsonData)
        {
            //实例化JavaScriptSerializer类的新实例。。。需要添加 System.Web.Extensions引用
            JavaScriptSerializer jss = new JavaScriptSerializer();
            try
            {
                //将指定的 JSON 字符串转换为 Dictionary<string, object> 类型的对象
                return jss.Deserialize<Dictionary<string, object>>(jsonData);
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

HTTPS POST

class ProgramTest
{
    static void Main(string[] args)
    {
        string url = "https://www.test.com";
        string result = PostUrl(url, "key=123"); // key=4da4193e-384b-44d8-8a7f-2dd8b076d784
        Console.WriteLine(result);
        Console.WriteLine("OVER");
        Console.ReadLine();
    }

    private static string PostUrl(string url, string postData)
    {
        HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
        if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
        {
            ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
            request.ProtocolVersion = HttpVersion.Version11;
　　　　　　　　　// 这里设置了协议类型。
            ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;// SecurityProtocolType.Tls1.2; 
            request.KeepAlive = false;
            ServicePointManager.CheckCertificateRevocationList = true;
            ServicePointManager.DefaultConnectionLimit = 100;
            ServicePointManager.Expect100Continue = false;
        }
        request.Method = "POST";    //使用get方式发送数据
        request.ContentType = "application/x-www-form-urlencoded";
        request.Referer = null;
        request.AllowAutoRedirect = true;
        request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
        request.Accept = "*/*";

        byte[] data = Encoding.UTF8.GetBytes(postData);
        Stream newStream = request.GetRequestStream();
        newStream.Write(data, 0, data.Length);
        newStream.Close();

        //获取网页响应结果
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        Stream stream = response.GetResponseStream();
        //client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        string result = string.Empty;
        using (StreamReader sr = new StreamReader(stream))
        {
            result = sr.ReadToEnd();
        }

        return result;
    }

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

附.另外一个Post

public void Post()
{
 var d = new SendNews();
            d.touser = touser;
            d.agentid = "7";
            d.Description = wxmsg;

            HttpClient client = new HttpClient();
            client.BaseAddress = new Uri("http://localhost:47870/");
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            HttpResponseMessage response = client.PostAsJsonAsync("api/SendMsg/SendNews", d).Result; 
}


   public class SendNews 
        {
            /// <summary>
            /// UserID列表（消息接收者，多个接收者用‘|’分隔）。特殊情况：指定为@all，则向关注该企业应用的全部成员发送 
            /// </summary>
            public string touser { get; set; }
            /// <summary>
            /// PartyID列表，多个接受者用‘|’分隔。当touser为@all时忽略本参数
            /// </summary>
            public string toparty { get; set; }
            /// <summary>
            /// TagID列表，多个接受者用‘|’分隔。当touser为@all时忽略本参数 
            /// </summary>
            public string totag { get; set; }
            /// <summary>
            /// 消息类型
            /// </summary>
            public string msgtype { get; set; }
            /// <summary>
            /// 企业应用的id，整型。可在应用的设置页面查看 
            /// </summary>
            public string agentid { get; set; }

            /// <summary>
            /// 表示是否是保密消息，0表示否，1表示是，默认0 
            /// </summary>
            public string safe { get; set; }


            /// <summary>
            /// 文章标题
            /// </summary>
            public string Title { get; set; }
            /// <summary>
            /// 文章描述
            /// </summary>
            public string Description { get; set; }
            /// <summary>
            /// 图片链接，支持JPG、PNG格式，较好的效果为大图360*200，小图200*200
            /// </summary>
            public string PicUrl { get; set; }
            /// <summary>
            /// 点击图文消息跳转链接
            /// </summary>
            public string Url { get; set; }
        }

键值对提交

        //重点！！ 成功 利用Webclient Post 按字段的方式提交每个字段的内容给服务器端 
        public string WebClientPost(string url, System.Collections.Specialized.NameValueCollection PostVars)
        {
            try
            {
                System.Net.WebClient WebClientObj = new System.Net.WebClient();
                byte[] byRemoteInfo = WebClientObj.UploadValues(url, "POST", PostVars);
                //下面都没用啦，就上面一句话就可以了
                string sRemoteInfo = System.Text.Encoding.Default.GetString(byRemoteInfo);
                return sRemoteInfo;

            }
            catch
            {
                return "";
            }
        }

        public void test()
        {
            System.Collections.Specialized.NameValueCollection PostVars = new System.Collections.Specialized.NameValueCollection();
            PostVars.Add("test", "value");
            PostVars.Add("cmd", "value");
            PostVars.Add("token", "value");
            WebClientPost("url", PostVars);
        }