小米OAuth2.0 C#版SDK源代码学习

来源：互联网发布：禾赛科技李一帆知乎编辑：程序博客网时间：2024/06/01 21:47

因为，最近在做和小米账号胡同的项目，所以分析学习了关于小米C#版SDK的开放源代码，在这里进行总结和汇总，毕竟编程的学习就是不断的学习别人的代码，取长补短，扩展思路。

获取网页内容的方法

获取html网页内容，该方法是为了获取返回网页内容，以获取必要的接口信息。

/// <summary>/// 获取html网页内容/// </summary>/// <param name="uri">网址代码</param>/// <param name="method">请求的方法</param>/// <param name="headers">HTTP标头键值对集合</param>/// <returns></returns>public static string getResponse(string uri, string method, Dictionary<string,string> headers){    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);    request.Method = method;    if (headers != null)    {        foreach (KeyValuePair<string, string> headersKey in headers)        {            request.Headers.Add(headersKey.Key, headersKey.Value);        }    }    HttpWebResponse response = (HttpWebResponse)request.GetResponse();    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("UTF-8"));    string respHtml;    try    {        respHtml = reader.ReadToEnd();    }    catch (Exception e)    {        throw e;    }    finally    {        reader.Close();    }    return respHtml;}

Uri地址构建自定义类,是为了取代常用的拼接字符串方法实现查询字符串地址的拼接，开发者写了一个自定义的类继承了微软框架中的UriBuilder类，增加了查询字符串的拼接和并入方法。

Uri地址构建自定义改进类

    /// <summary>    /// Uri地址构建自定义改进类    /// </summary>    public class UriBuilderImprove : UriBuilder    {        //查询字符串键值对集合        Dictionary<string, string> queryString = null;        #region Properties        public Dictionary<string, string> QueryString        {            get            {                if (queryString == null)                {                    queryString = new Dictionary<string, string>();                }                return queryString;            }        }        public string PageName        {            get            {                string path = base.Path;                return path.Substring(path.LastIndexOf("/") + 1);            }            set            {                string path = base.Path;                path = path.Substring(0, path.LastIndexOf("/"));                base.Path = string.Concat(path, "/", value);            }        }        #endregion        #region 重载构造函数        public UriBuilderImprove():base(){}        public UriBuilderImprove(string uri):base(uri)        {            PopulateQueryString();        }        public UriBuilderImprove(Uri uri): base(uri)        {            PopulateQueryString();        }        public UriBuilderImprove(string schemeName, string hostName): base(schemeName, hostName){}        public UriBuilderImprove(string scheme, string host, int portNumber): base(scheme, host, portNumber){}        public UriBuilderImprove(string scheme, string host, int port, string pathValue): base(scheme, host, port, pathValue){}        public UriBuilderImprove(string scheme, string host, int port, string path, string extraValue): base(scheme, host, port, path, extraValue){}        #endregion        /// <summary>        /// 获取据对的Uri地址字符串        /// </summary>        /// <returns></returns>        public new string ToString()        {            GetQueryString();            return base.Uri.AbsoluteUri;        }        /// <summary>        /// 填入查询字符串        /// </summary>        private void PopulateQueryString()        {            string query = base.Query;            if (query == string.Empty || query == null)            {                return;            }            if (queryString == null)            {                queryString = new Dictionary<string, string>();            }            queryString.Clear();            query = query.Substring(1); //remove the ?            string[] pairs = query.Split(new char[] { '&' });            foreach (string s in pairs)            {                string[] pair = s.Split(new char[] { '=' });                queryString[pair[0]] = (pair.Length > 1) ? pair[1] : string.Empty;            }        }        /// <summary>        /// 拼接查询字符串        /// </summary>        private void GetQueryString()        {            int count = queryString.Count;            if (count == 0)            {                base.Query = string.Empty;                return;            }            string[] keys = new string[count];            string[] values = new string[count];            string[] pairs = new string[count];            queryString.Keys.CopyTo(keys, 0);            queryString.Values.CopyTo(values, 0);            for (int i = 0; i < count; i++)            {                pairs[i] = string.Concat(keys[i], "=", Uri.EscapeDataString(values[i]));            }            base.Query = string.Join("&", pairs);        }    }

整个小米开发OAuth2.0的SDK核心的代码就这么多，一个拼接接口地址，一个根据拼接成的uri地址返回所需的小米用户数据。剩下的SDK代码主要是涉及一些小米OAuth的专用名词，uri，和一些加密算法，大家都可以在小米开发者文档中找到，这里就不在占用篇幅了。

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