/// 获取jsapi_ticket
/// <summary>
/// 获取jsapi_ticket
/// </summary>
/// <param name="access"></param>
/// <returns></returns>
private static JSTicket getJSTicketTicket(string access)
{
string Str = GetJson("https://api.weixin.qq.com/cgi-bin/ticket/getticket?AccessToken_token=" + access + "&type=JSTicket");
JSTicket jt = JsonConvert.DeserializeObject <JSTicket>(Str);
return(jt);
}
/// 获取jsapi_ticket,如果存在且没过期，则直接取jsapi_ticket
/// <summary>
/// 获取jsapi_ticket,如果存在且没过期，则直接取jsapi_ticket
/// </summary>
/// <returns></returns>
public static string GetExistJSTicket()
{
// 读取XML文件中的数据
string filepath = System.Web.HttpContext.Current.Server.MapPath("/XMLToken.xml");
FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
StreamReader str = new StreamReader(fs, System.Text.Encoding.UTF8);
XmlDocument xml = new XmlDocument();
xml.Load(str);
str.Close();
str.Dispose();
fs.Close();
fs.Dispose();
string ticket = xml.SelectSingleNode("xml").SelectSingleNode("JSTicket").InnerText;
DateTime AccessTokenExpires = Convert.ToDateTime(xml.SelectSingleNode("xml").SelectSingleNode("JSAccessExpires").InnerText);
//如果jsapi_ticket过期，则重新获取token
if (DateTime.Now >= AccessTokenExpires)
{
string Token = xml.SelectSingleNode("xml").SelectSingleNode("AccessToken").InnerText;
JSTicket mode = getJSTicketTicket(Token);
if (mode.ticket != null && mode.expires_in != null)
{
//将jsapi_ticket存到xml文件中，全局缓存
xml.SelectSingleNode("xml").SelectSingleNode("JSTicket").InnerText = mode.ticket;
DateTime _AccessTokenExpires = DateTime.Now.AddSeconds(int.Parse(mode.expires_in));
xml.SelectSingleNode("xml").SelectSingleNode("JSAccessExpires").InnerText = _AccessTokenExpires.ToString();
xml.Save(filepath);
ticket = mode.ticket;
}
else
{
ticket = "";
}
}
return(ticket);
}