C# 使用Get和Post请求获取数据

【实例简介】Get和Post请求获取数据

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.IO;
using System.Text;

namespace Web
{
    public partial class Test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string url = "http://10.173.113.90:8080/PlatformApp/getInfo/getLabs"; //请求的URL地址
            string theData = "cardid=33042519400224082X";//请求的参数
            string data=GetData(url, theData);
            dynamic obj1 = Newtonsoft.Json.JsonConvert.DeserializeObject(data);//在bin文件夹下添加一个Newtonsoft.Json.dll引用，并引用到您的项目中
            if (obj1 != null)
            {
                string msg = obj1.msg.ToString();
                string success = obj1.success.ToString();
            }
        }

        #region  Get Post 请求
        /// <summary>
        /// GET传值
        /// </summary>
        /// <param name="Url">传递的地址</param>
        /// <param name="theData">传递的内容（如：a=1&b=2&c=3）</param>
        /// <returns>返回结果</returns>
        public string GetData(string Url, string theData)
        {
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url   "?"   theData);
            request.Method = "GET";
            request.ContentType = "text/html;charset=UTF-8";

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream myResponseStream = response.GetResponseStream();
            StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("UTF-8"));
            string retString = myStreamReader.ReadToEnd();
            myStreamReader.Close();
            myResponseStream.Close();

            return retString;
        }


        /// <summary>
        /// POST传值
        /// </summary>
        /// <param name="posturl">传递的地址</param>
        /// <param name="postData">传递的内容（如：a=1&b=2&c=3）</param>
        /// <returns>返回结果</returns>
        public string PostData(string posturl, string postData)
        {
            Stream outstream = null;
            Stream instream = null;
            StreamReader sr = null;
            HttpWebResponse response = null;
            HttpWebRequest request = null;
            Encoding encoding = System.Text.Encoding.GetEncoding("UTF-8");
            byte[] data = encoding.GetBytes(postData);
            // 准备请求...
            try
            {
                // 设置参数
                request = WebRequest.Create(posturl) as HttpWebRequest;
                CookieContainer cookieContainer = new CookieContainer();
                request.CookieContainer = cookieContainer;
                request.AllowAutoRedirect = true;
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = data.Length;
                outstream = request.GetRequestStream();
                outstream.Write(data, 0, data.Length);
                outstream.Close();
                //发送请求并获取相应回应数据
                response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序才开始向目标网页发送Post请求
                instream = response.GetResponseStream();
                sr = new StreamReader(instream, encoding);
                //返回结果网页（html）代码
                string content = sr.ReadToEnd();
                string err = string.Empty;
                return content;
            }
            catch (Exception ex)
            {
                string err = ex.Message;
                return string.Empty;
            }
        }

        #endregion

    }
}