HttpWebRequest 通过get_httpwebrequest get

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;

namespace BMOA.Common.HTTP
{
    public class HttpHelper
    {
        /// <summary>
        /// HttpWebRequest 通过get
        /// </summary>
        /// <param name="url">URI</param>
        /// <returns></returns>
        public static string GetDataGetHtml(string url)
        {
            try
            {
                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);

                httpWebRequest.ContentType = "application/x-www-form-urlencoded";
                httpWebRequest.Method = "GET";
                //对发送的数据不使用缓存
                httpWebRequest.AllowWriteStreamBuffering = false;
                httpWebRequest.Timeout = 300000;
                httpWebRequest.ServicePoint.Expect100Continue = false;

                HttpWebResponse webRespon = (HttpWebResponse)httpWebRequest.GetResponse();
                Stream webStream = webRespon.GetResponseStream();
                if (webStream == null)
                {
                    return "网络错误(Network error)：" + new ArgumentNullException("webStream");
                }
                StreamReader streamReader = new StreamReader(webStream, Encoding.UTF8);
                string responseContent = streamReader.ReadToEnd();

                webRespon.Close();
                streamReader.Close();

                return responseContent;
            }
            catch (Exception ex)
            {
                return "网络错误(Network error)：" + ex.Message;
            }
        }
    }
}

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