/// <summary>
/// 获取JSApiTicket
/// </summary>
/// <param name="Now">当前日期时间</param>
/// <param name="AppId">AppId为空时默认取配置文件appSettings节点key=WeChatAppId</param>
/// <param name="access_token">访问令牌</param>
/// <param name="GetJSApiTicketFromStorage">委托客户端从自定义存储库(接入者的DB、Cache、仓储源)获取JSApiTicket</param>
/// <param name="UpdateJSApiTicketToStorage">委托客户端将JSApiTicket插入或更新到自定义存储库(接入者的DB、Cache、仓储源)</param>
/// <returns></returns>
public static JSApiTicketCacheModel GetJSApiTicket(DateTime Now, string AppId, string access_token, GetJSApiTicketFromStorage GetJSApiTicketFromStorage = null, UpdateJSApiTicketToStorage UpdateJSApiTicketToStorage = null)
{
if (string.IsNullOrWhiteSpace(access_token))
{
throw new ArgumentNullException(nameof(access_token));
}
AppId = string.IsNullOrWhiteSpace(AppId) ? Privacy.AppId : AppId;
var ticketModel = GetJSApiTicketFromStorage?.Invoke(Now, AppId);
if (CheckTicket(Now, ticketModel))
{
return(ticketModel);
}
ticketModel = GetTicketFromCache(AppId);
if (CheckTicket(Now, ticketModel))
{
return(ticketModel);
}
var ticket = GetJSApiTicketFromWeChat(AppId, access_token);
ticketModel = new JSApiTicketCacheModel(ticket.expires_in);
ticketModel.ticket = ticket.ticket;
ticketModel.expires_in = ticket.expires_in;
ticketModel.appid = AppId;
UpdateTicketToCache(ticketModel);
UpdateJSApiTicketToStorage?.Invoke(Now, ticketModel);
return(ticketModel);
}
private static bool UpdateTicketToCache(JSApiTicketCacheModel Ticket)
{
if (null != Ticket)
{
CacheHelper.SetCache(key(Ticket.appid), Ticket, Ticket.expires_in / 60);
return(true);
}
return(false);
}
/// <summary>
/// 检查Ticket是否有效
/// </summary>
/// <param name="Now">当前日期时间</param>
/// <param name="Ticket">JSApiTicketCacheModel</param>
/// <returns></returns>
public static bool CheckTicket(DateTime Now, JSApiTicketCacheModel Ticket)
{
if (null == Ticket)
{
return(false);
}
if (string.IsNullOrWhiteSpace(Ticket.ticket) || Ticket.expires_in < 1 || string.IsNullOrWhiteSpace(Ticket.expires_time))
{
return(false);
}
return(DateTime.Compare(Now.AddMinutes(5), DateTime.SpecifyKind(DateTime.Parse(Ticket.expires_time), Now.Kind)) < 0);
}
/// <summary>
/// 用户自定义获取JSApiTicket
/// </summary>
/// <returns></returns>
private static JSApiTicketCacheModel GetJSApiTicket()
{
JSSDK.GetJSApiTicketFromStorage get = delegate(DateTime Now, string AppId)
{
//根据AppId从自定义存储库(接入者的DB、Cache、仓储源)获取JSApiTicket
/*
* return GetJSApiTicketByCache(AppId);
* return GetJSApiTicketByRedis(AppId);
* return GetJSApiTicketByMemcache(AppId);
* return GetJSApiTicketByMongodb(AppId);
* return GetJSApiTicketByDB(AppId);
* ……
*/
/***** 示例·开始 *****/
JSApiTicketCacheModel Ticket = null;
/* 先从自己系统的快速获取已存在的票据（Cache、Redis，Memcache等）*/
object TokenFromCache = CacheHelper.GetCache("WeChatJSApiTicket_" + AppId);
Ticket = null != TokenFromCache ? (JSApiTicketCacheModel)TokenFromCache : null;
if (WeChatHelper4Net.JSSDK.CheckTicket(Now, Ticket))
{
return(Ticket);
}
/* 如果快速数据没有，再从自己系统的稳定数据库获取已存在的票据（MySQL，SQLServer，Oracle等）*/
//var TokenFromDB = BLLRepository.wechatManageBLL.GetTokenOrTicket(AppId, "JSApiTicket");
//if(null != TokenFromDB)
//{
// Ticket = new JSApiTicketCacheModel()
// {
// appid = TokenFromDB.appid,
// ticket = TokenFromDB.access_token,
// expires_in = TokenFromDB.expires_in,
// expires_time = TokenFromDB.expires_time,
// errcode = TokenFromDB.errcode,
// errmsg = TokenFromDB.errmsg
// };
// if(WeChatHelper4Net.JSSDK.CheckTicket(Now, Ticket))
// {
// CacheHelper.SetCache("WeChatJSApiTicket_" + Ticket.appid, Ticket, Ticket.expires_in / 60);
// return Ticket;
// }
//}
/***** 示例·结束 *****/
return(null);
};
JSSDK.UpdateJSApiTicketToStorage update = delegate(DateTime now, JSApiTicketCacheModel Ticket)
{
bool result = false;
//根据Ticket.appid将JSApiTicket插入或更新到自定义存储库(接入者的DB、Cache、仓储源)
/*
* result = UpdateJSApiTicketToCache(Ticket.appid, Ticket);
* result = UpdateJSApiTicketToRedis(Ticket.appid, Ticket);
* result = UpdateJSApiTicketToMemcache(Ticket.appid, Ticket);
* result = UpdateJSApiTicketToMongodb(Ticket.appid, Ticket);
* result = UpdateJSApiTicketToDB(Ticket.appid, Ticket);
* ……
*/
/***** 示例·开始 *****/
if (null != Ticket && !string.IsNullOrWhiteSpace(Ticket.appid) && Ticket.expires_in > 60)
{
/* 先将票据存到自己系统的快速获取已存在的票据（Cache、Redis，Memcache等）*/
CacheHelper.SetCache("WeChatJSApiTicket_" + Ticket.appid, Ticket, Ticket.expires_in / 60);
//var entity = new TbWeChatTokenOrTicketModel()
//{
// appid = Ticket.appid,
// access_token = Ticket.ticket,
// expires_in = Ticket.expires_in,
// expires_time = Ticket.expires_time,
// errcode = Ticket.errcode,
// errmsg = Ticket.errmsg,
// type = "JSApiTicket",
// UpdateTime = DateTime.Now
//};
/* 为了避免快速数据丢失，再将票据存到自己系统的稳定数据库获取已存在的票据（MySQL，SQLServer，Oracle等）*/
//result = BLLRepository.wechatManageBLL.UpdateTokenOrTicket(entity);
}
/***** 示例·结束 *****/
return(result);
};
string appId = ConfigurationManager.AppSettings["WeChatAppId"].ToString(); //AppId为空时默认取配置文件appSettings节点key=WeChatAppId
string access_token = WeChatTokenOrTicket.GetAccessToken().access_token;
var ticket = JSSDK.GetJSApiTicket(DateTime.Now, appId, access_token, get, update);
if (null != ticket)
{
return(ticket);
}
else
{
return(default(JSApiTicketCacheModel));
}
}
