ASP.NET WEBAPI 获取微信Access token
2021/7/27 14:06:23
本文主要是介绍ASP.NET WEBAPI 获取微信Access token,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
/// <summary> /// 获取Access token /// </summary> /// <param name="appid"></param> /// <param name="secret"></param> /// <returns></returns> public static string GetAccessToken() { //创建一个配置 var Configuration = new ConfigurationBuilder() //添加配置文件 .Add(new JsonConfigurationSource { Path = "appsettings.json", ReloadOnChange = true }) .Build(); //赋值 _config = Configuration; //读取key和secret string appid = _config["WeiXingSession:AppID"]; string secret = _config["WeiXingSession:AppSecret"]; string strJson = HttpRequestUtil.RequestUrl(string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", appid, secret)); return GetJsonValue(strJson, "access_token"); } /// <summary> /// HTTP请求功能 /// </summary> internal class HttpRequestUtil { #region 请求Url,不发送数据 /// <summary> /// 请求Url,不发送数据 /// </summary> public static string RequestUrl(string url) { return RequestUrl(url, "POST"); } #endregion #region 请求Url,不发送数据 /// <summary> /// 请求Url,不发送数据 /// </summary> public static string RequestUrl(string url, string method) { // 设置参数 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; CookieContainer cookieContainer = new CookieContainer(); request.CookieContainer = cookieContainer; request.AllowAutoRedirect = true; request.Method = method; request.ContentType = "text/html"; request.Headers.Add("charset", "utf-8"); //发送请求并获取相应回应数据 HttpWebResponse response = request.GetResponse() as HttpWebResponse; //直到request.GetResponse()程序才开始向目标网页发送Post请求 Stream responseStream = response.GetResponseStream(); StreamReader sr = new StreamReader(responseStream, Encoding.UTF8); //返回结果网页(html)代码 string content = sr.ReadToEnd(); return content; } #endregion } public static string GetJsonValue(string jsonStr, string key) { string result = string.Empty; if (!string.IsNullOrEmpty(jsonStr)) { key = "\"" + key.Trim('"') + "\""; int index = jsonStr.IndexOf(key) + key.Length + 1; if (index > key.Length + 1) { //先截逗号,若是最后一个,截“}”号,取最小值 int end = jsonStr.IndexOf(',', index); if (end == -1) { end = jsonStr.IndexOf('}', index); } result = jsonStr.Substring(index, end - index); result = result.Trim(new char[] { '"', ' ', '\'' }); //过滤引号或空格 } } return result; }
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