c#使用HttpWebRequest 请求webapi封装类_c# http封装

第一步创建名为Post.cs 的类

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;

namespace Test.Helper
{
    public class Post
    {
        public static string Postring(string url, Dictionary<string, string> dic)
        {
            string result = "";
            //url = "http://172.16.22.15:8000/" + url;
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.Proxy = null;

            req.KeepAlive = false;

            #region 添加Post 参数
            StringBuilder builder = new StringBuilder();
            int i = 0;
            foreach (var item in dic)
            {
                if (i > 0)
                    builder.Append("&");
                builder.AppendFormat("{0}={1}", item.Key, item.Value);
                i++;
            }
            byte[] data = Encoding.UTF8.GetBytes(builder.ToString());
            req.ContentLength = data.Length;
            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(data, 0, data.Length);
                reqStream.Close();
            }
            #endregion
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            Stream stream = resp.GetResponseStream();
            
            //获取响应内容
            using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
            {
                result = reader.ReadToEnd();
            }
            return result;
        }
    }
}

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第二步使用：

 string results = Post.Postring("api/login", new Dictionary<string, string>
                {
                    {"Account","admin"},
                    {"Password","123456" },
                });
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第三步：得到请求数据返回结果(string)

如有问题请私信我