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C#后台发送POST和GET请求方法

HTTP GET使用方法：

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

namespace BlogAppCore.Common
{
    public class HttpGet
    {
        /// <summary>
        /// 后台发送GET请求
        /// </summary>
        /// <param name="url">服务器地址</param>
        /// <param name="data">发送的数据</param>
        /// <returns></returns>
        public string HttpGet(string url, string data)
        {
            try
            {
                //创建Get请求
                url = url + (data == "" ? "" : "?") + data;
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
                request.Method = "GET";
                request.ContentType = "text/html;charset=UTF-8";

                //接受返回来的数据
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream stream = response.GetResponseStream();
                StreamReader streamReader = new StreamReader(stream, Encoding.GetEncoding("utf-8"));
                string retString = streamReader.ReadToEnd();

                streamReader.Close();
                stream.Close();
                response.Close();

                return retString;
            }
            catch (Exception)
            {
                return "";
            }
        }
    }
}

HTTP POST使用方法：

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

namespace BlogAppCore.Common
{
    /// <summary>
    /// 后台发送POST请求
    /// </summary>
    /// <param name="url">服务器地址</param>
    /// <param name="data">发送的数据</param>
    /// <returns></returns>
    public string HttpPost(string url, string data)
    {
        try
        {
            //创建post请求
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/json;charset=UTF-8";
            byte[] payload = Encoding.UTF8.GetBytes(data);
            request.ContentLength = payload.Length;

            //发送post的请求
            Stream writer = request.GetRequestStream();
            writer.Write(payload, 0, payload.Length);
            writer.Close();

            //接受返回来的数据
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            Stream stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream, Encoding.UTF8);
            string value = reader.ReadToEnd();

            reader.Close();
            stream.Close();
            response.Close();

            return value;
        }
        catch (Exception)
        {
            return "";
        }
    }
}