使用Http Basic方式发送微博

使用新浪微博接口发送微博有多种方式，本文介绍使用最简单的Http Basic方法调用新浪的接口。新浪微博开发平台 open.weibo.com，首先需要新建一个应用，得到AppKey就可以了。具体请看代码：

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

namespace SendWeiboV1
{
    public class BasicAuth
    {
        string username;
        string password;
        string key;
        public string UsernamePassword
        {
            get { return username + ":" + password; }
        }

        /// <summary>
        /// 默认构造函数
        /// </summary>
        public BasicAuth()
        {
            username = "yourname@xxx.com";
            password = "yourpwd";
            key = "111222333";//AppKey
        }

        public BasicAuth(string username, string password)
        {
            this.username = username;
            this.password = password;
            this.key = "your app key";
        }

        public BasicAuth(string username, string password, string key)
        {
            this.username = username;
            this.password = password;
            this.key = key;
        }

        /// <summary>
        /// 发送POST请求,使用普通的Basic方式进行验证
        /// 适用于调试,不适用于正式场合
        /// </summary>
        /// <param name="url">请求的weibo接口,post方式</param>
        /// <param name="Content">请求的内容内容</param>
        /// <returns>string</returns>
        public string SendPostRequest(string url, string Content)
        {
            string result = string.Empty;

            //准备调用的URL及需要POST的数据:
            string data = "source=" + key + "&status=" + Content;

            //准备用于发起请求的HttpWebRequest对象：
            WebRequest webRequest = WebRequest.Create(url);
            HttpWebRequest httpRequest = webRequest as HttpWebRequest;

            //准备用于用户验证的凭据
            CredentialCache myCache = new CredentialCache();
            myCache.Add(new Uri(url), "Basic", new NetworkCredential(username, password));
            httpRequest.Credentials = myCache;
            httpRequest.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new System.Text.ASCIIEncoding().GetBytes(UsernamePassword)));

            //发起POST请求
            httpRequest.Method = "POST";
            httpRequest.ContentType = "application/x-www-form-urlencoded";
            System.Text.Encoding encoding = System.Text.Encoding.ASCII;
            byte[] bytesToPost = encoding.GetBytes(data);
            httpRequest.ContentLength = bytesToPost.Length;
            System.IO.Stream requestStream = httpRequest.GetRequestStream();
            requestStream.Write(bytesToPost, 0, bytesToPost.Length);
            requestStream.Close();

            //获取服务端的响应内容
            System.Net.WebResponse wr = httpRequest.GetResponse();
            System.IO.Stream receiveStream = wr.GetResponseStream();
            using (System.IO.StreamReader reader = new System.IO.StreamReader(receiveStream, System.Text.Encoding.UTF8))
            {
                result = reader.ReadToEnd();
            }
            return result;
        }


        /// <summary>
        /// 非Web项目情况下的UrlEncode方法
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string UrlEncode(string str)
        {
            StringBuilder sb = new StringBuilder();
            byte[] byStr = System.Text.Encoding.UTF8.GetBytes(str); //默认是System.Text.Encoding.Default.GetBytes(str)
            for (int i = 0; i < byStr.Length; i++)
            {
                sb.Append(@"%" + Convert.ToString(byStr[i], 16));
            }

            return (sb.ToString());
        }
    }
}

效果图：