C# Http请求 Post 和 Get 方式的通用类

标签：Http string Get C# request System StreamReader HttpWebRequest response

using System;
using System.Net;
using System.IO;
using System.Web;
using System.Text;


namespace myClass
{
    public class clsWebSubmit
    {

        //向服务器送出 POST 请求  
        public string PostSubmit(string strUrl, string strParam)
        {
            string strResult = "error";
            try
            {
                System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(strUrl);
                Encoding encoding = Encoding.UTF8;
                //encoding.GetBytes(postData);
                byte[] bs = Encoding.ASCII.GetBytes(strParam);
                string responseData = System.String.Empty;
                req.Method = "POST";
                req.ContentType = "application/x-www-form-urlencoded";
                req.ContentLength = bs.Length;
                try
                {
                    using (System.IO.Stream reqStream = req.GetRequestStream())
                    {
                        reqStream.Write(bs, 0, bs.Length);
                        reqStream.Close();
                    }
                    using (System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)req.GetResponse())
                    {
                        using (System.IO.StreamReader reader = new System.IO.StreamReader(response.GetResponseStream(), encoding))
                        {
                            responseData = reader.ReadToEnd().ToString();
                            strResult = responseData;
                        }
                    }
                }
                catch (System.Exception ex)
                {
                    //strResult = "error：" + ex.Message;//返回异常信息
                    strResult = "";
                    clsLogHelper.m_CreateErrorLogTxt("m_PostSubmit ", strUrl + "  " + strParam, ex.Message);
                }
            }
            catch (System.Exception ex)
            {
                //strResult = "error：" + ex.Message;//返回异常信息
                strResult = "";
                clsLogHelper.m_CreateErrorLogTxt("m_PostSubmit ", strUrl + "  " + strParam, ex.Message);
            }
            return strResult;

            #region 这个写法写好用
            /* 这个写法写好用
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] data = encoding.GetBytes(strParam);

            HttpWebRequest request =(HttpWebRequest)HttpWebRequest.Create(this.url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = data.Length;
            Stream sm = request.GetRequestStream();
            sm.Write(data, 0, data.Length);
            sm.Close();

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            if (response.StatusCode.ToString() != "OK")
            {
                //MessageBox.Show(response.StatusDescription.ToString());
                return "error";
            }

            StreamReader myreader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            string responseText = myreader.ReadToEnd();
            string str = System.Web.HttpUtility.UrlEncode(responseText, Encoding.UTF8);
             
            return str;
            */
            #endregion

        }

        //向服务器送出 POST 请求   这个写法写好用
        public string PostSubmit2(string strUrl, string strParam)
        {
            string strResult = "error";
            try
            {
                ASCIIEncoding encoding = new ASCIIEncoding();
                byte[] data = encoding.GetBytes(strParam);

                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(strUrl);
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = data.Length;
                Stream sm = request.GetRequestStream();
                sm.Write(data, 0, data.Length);
                sm.Close();

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                if (response.StatusCode.ToString() != "OK")
                {
                    //MessageBox.Show(response.StatusDescription.ToString());
                    return "error";
                }

                StreamReader myreader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                strResult = myreader.ReadToEnd();
                //string str = System.Web.HttpUtility.UrlEncode(strResult, Encoding.UTF8);

                return strResult;

            }
            catch (System.Exception ex)
            {
                strResult = "error：" + ex.Message;//返回异常信息
                clsLogHelper.m_CreateErrorLogTxt("m_PostRequest ", strUrl + "  " + strParam, ex.Message);
                return strResult;
            }
        }

        //创建 Post 的HTTP请求 带Json参数的
        public string PostRequest(string url, string headerToken, string strParam)
        {
            try
            {
                //string strParam = "{\"destNumber\":\"" + strExtTel + "\", \"app\":\"transfer\",\"args\":\"" + strCalledNumber + "\"}";
                //String strUrl = "http://192.168.1.31:80/api/channels";

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "POST";
                //request.ContentType = "text/html, application/xhtml+xml, */*";
                request.ContentType = "application/json";
                request.Headers["X-XTRA-AUTH-ID"] = headerToken; //添加头

                //参数
                ASCIIEncoding encoding = new ASCIIEncoding();
                byte[] data = encoding.GetBytes(strParam);

                request.ContentLength = data.Length;
                Stream sm = request.GetRequestStream();
                sm.Write(data, 0, data.Length);
                sm.Close();

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream rs = response.GetResponseStream();
                //StreamReader sr = new StreamReader(rs, encode);
                StreamReader sr = new StreamReader(rs, Encoding.UTF8);
                var result = sr.ReadToEnd();
                sr.Close();
                rs.Close();
                return result;


            }
            catch (Exception ex)
            {
                myClass.clsLogHelper.m_CreateErrorLogTxt("clsWebSubmit", "PostRequest()", ex.Message.ToString());
                return "-1";
            }

        }

        //向服务器送出 Get 请求  
        public string GetSubmit(string strUrl, string strParam)
        {
            System.Net.HttpWebRequest request;
            // 创建一个HTTP请求
            request = (System.Net.HttpWebRequest)WebRequest.Create(strUrl);
            request.Method="get";
            System.Net.HttpWebResponse response;
            response = (System.Net.HttpWebResponse)request.GetResponse();

            System.IO.StreamReader myreader = new System.IO.StreamReader(response.GetResponseStream(), Encoding.UTF8);

            string responseText = myreader.ReadToEnd();
            myreader.Close();
 
            return responseText;
        }

        //创建GET的HTTP请求 
        //public string GetData(string url, Encoding encode)
        public string GetRequest(string url, string headerToken)
        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";
            //request.ContentType = "text/html, application/xhtml+xml, */*";
            request.ContentType = "application/json";

            request.Headers["X-XTRA-AUTH-ID"] = headerToken; //添加头

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream rs = response.GetResponseStream();
            //StreamReader sr = new StreamReader(rs, encode);
            StreamReader sr = new StreamReader(rs, Encoding.UTF8);
            var result = sr.ReadToEnd();
            sr.Close();
            rs.Close();
            return result;

        }

        #region HTTP GET 请求示例
        /*
        private void butGet_Click(object sender, EventArgs e)
        {
            string strURL = "http://localhost/WinformSubmit.php?tel=11111&name=张三";

            System.Net.HttpWebRequest request;
            // 创建一个HTTP请求
            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            //request.Method="get";
            System.Net.HttpWebResponse response;
            response = (System.Net.HttpWebResponse)request.GetResponse();

            System.IO.StreamReader myreader = new System.IO.StreamReader(response.GetResponseStream(), Encoding.UTF8);

            string responseText = myreader.ReadToEnd();
            myreader.Close();

            //MessageBox.Show(responseText);

            this.txtResult.Text = responseText;
        }
        */
        #endregion

        #region HTTP GET 请求示例
        /*
        private void butPost_Click(object sender, EventArgs e)
        {
            string strURL = "http://localhost/WinformSubmit.php";
            System.Net.HttpWebRequest request;

            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            //Post请求方式
            request.Method = "POST";
            // 内容类型
            request.ContentType = "application/x-www-form-urlencoded";
            // 参数经过URL编码
            string paraUrlCoded = System.Web.HttpUtility.UrlEncode("keyword");
            paraUrlCoded += "=" + System.Web.HttpUtility.UrlEncode("多月");
            byte[] payload;
            //将URL编码后的字符串转化为字节
            payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
            //设置请求的 ContentLength 
            request.ContentLength = payload.Length;
            //获得请 求流
            System.IO.Stream writer = request.GetRequestStream();
            //将请求参数写入流
            writer.Write(payload, 0, payload.Length);
            // 关闭请求流
            writer.Close();
            System.Net.HttpWebResponse response;
            // 获得响应流
            response = (System.Net.HttpWebResponse)request.GetResponse();

            System.IO.StreamReader myreader = new System.IO.StreamReader(response.GetResponseStream(), Encoding.UTF8);

            string responseText = myreader.ReadToEnd();
            myreader.Close();

            //MessageBox.Show(responseText);

            this.txtResult.Text = responseText;
        }
        */
        #endregion

    }
}

调用方式示例

string strUrl = "http://localhost/WinformSubmit.php";
//string param = string.Format("do=login&u={0}&p={1}", username, password); //参数的另一种写法
string strParam = "callerid=" + strCallerId;

clsWebSubmit myPost = new clsWebSubmit();

string strResult = myPost.PostSubmit(strUrl, strParam); 

return strResult;

示例2 Post请求带Json参数

string strParam = "{\"destNumber\":\"" + strExtTel + "\", \"app\":\"transfer\",\"args\":\"" + strCalledNumber + "\"}";
String strUrl = "http://192.168.1.31:80/api/channels";
clsWebSubmit myPost = new clsWebSubmit();

string strResultString = myPost.PostRequest(strUrl, strToken,strParam);
return strResultString;

示例3 Get请求带头部 Token

String strUrl = "http://192.168.1.31:80/api/users/list";
clsWebSubmit myPost = new clsWebSubmit();

string strResultString = myPost.GetRequest(strUrl, strToken);
return strResultString;

标签：Http,string,Get,C#,request,System,StreamReader,HttpWebRequest,response
From： https://www.cnblogs.com/hailexuexi/p/16895404.html

C# Http请求 Post 和 Get 方式的通用类

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