/// <summary>
/// 根据当前日期 判断Access_Token 是否超期 如果超期返回新的Access_Token 否则返回之前的Access_Token
/// </summary>
/// <param name="datetime"></param>
/// <returns></returns>
public static string IsExistAccess_Token()
{
string Token = string.Empty;
DateTime YouXRQ;
// 读取XML文件中的数据，并显示出来 ，注意文件路径
string filepath = System.Web.HttpContext.Current.Server.MapPath("/XMLWXACCESS.xml");
StreamReader str = new StreamReader(filepath, System.Text.Encoding.UTF8);
XmlDocument xml = new XmlDocument();
xml.Load(str);
str.Close();
str.Dispose();
Token = xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText;
YouXRQ = Convert.ToDateTime(xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText);
if (DateTime.Now > YouXRQ)
{
DateTime _youxrq = DateTime.Now;
Access_token mode = GetAccess_token();
if (mode.access_token != null && mode.expires_in != null)
{
xml.SelectSingleNode("xml").SelectSingleNode("Access_Token").InnerText = mode.access_token;
_youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in));
xml.SelectSingleNode("xml").SelectSingleNode("Access_YouXRQ").InnerText = _youxrq.ToString();
xml.Save(filepath);
Token = mode.access_token;
}
}
return(Token);
//string _access_token = IsExistAccess_Token();
}
/// <summary>
/// 获取微信Token
/// </summary>
/// <returns></returns>
//public static string GetToken()
//{
// try
// {
// string getAccessTokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}";
// string respText = "";
// //获取appid和appsercret
// string wechat_appid = "wx14b829fae5b27750";
// string wechat_appsecret = "b316ef7d7c1c4bd9dad8141e252f6da7";
// //获取josn数据
// string url = string.Format(getAccessTokenUrl, wechat_appid, wechat_appsecret);
// string key = WebKeys.AccessTokenCacheKey;
// AccessToken access = MyCache<AccessToken>.Get(key);
// if (access == null)
// {
// HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
// HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// using (Stream resStream = response.GetResponseStream())
// {
// StreamReader reader = new StreamReader(resStream, Encoding.Default);
// respText = reader.ReadToEnd();
// resStream.Close();
// }
// JavaScriptSerializer Jss = new JavaScriptSerializer();
// Dictionary<string, object> respDic = (Dictionary<string, object>)Jss.DeserializeObject(respText);
// //通过键access_token获取值
// access = new AccessToken();
// access.accessToken = respDic["access_token"].ToString();
// access.lastGetTicketTime = DateTime.Now;
// MyCache<AccessToken>.Insert(key, access, 1400);
// }
// return access.accessToken;
// #region
// ////ticket 缓存7200秒
// //if (System.Web.HttpContext.Current.Session["jsapi_ticket"] == null)
// //{
// // HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
// // HttpWebResponse response = (HttpWebResponse)request.GetResponse();
// // using (Stream resStream = response.GetResponseStream())
// // {
// // StreamReader reader = new StreamReader(resStream, Encoding.Default);
// // respText = reader.ReadToEnd();
// // resStream.Close();
// // }
// // JavaScriptSerializer Jss = new JavaScriptSerializer();
// // Dictionary<string, object> respDic = (Dictionary<string, object>)Jss.DeserializeObject(respText);
// // //通过键access_token获取值
// // accessToken = respDic["access_token"].ToString();
// // System.Web.HttpContext.Current.Session["jsapi_ticket"] = accessToken;
// // System.Web.HttpContext.Current.Session.Timeout = 7200;
// // return accessToken;
// //}
// //else
// //{
// // accessToken = System.Web.HttpContext.Current.Session["jsapi_ticket"].ToString();
// // return accessToken;
// //}
// #endregion
// }
// catch (Exception ex)
// {
// LogUtil.WriteLog(ex);
// return null;
// }
//}
public static Access_token GetAccess_token()
{
string appid = System.Configuration.ConfigurationManager.AppSettings["weixinappid"];
string secret = System.Configuration.ConfigurationManager.AppSettings["weixincode"];
string strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
Access_token mode = new Access_token();
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(strUrl);
req.Method = "GET";
using (WebResponse wr = req.GetResponse())
{
HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
string content = reader.ReadToEnd();
//Response.Write(content);
//在这里对Access_token 赋值
Access_token token = new Access_token();
token = JsonHelper.ParseFromJson <Access_token>(content);
mode.access_token = token.access_token;
mode.expires_in = token.expires_in;
}
return(mode);
}