/// <summary>
/// 缓存并获取调用微信公众号接口的全局唯一票据
/// </summary>
/// <param name="appId">设置应用的APPID</param>
/// <param name="secret">设置应用的APPSECRET</param>
/// <returns>如果缓存的票据有效，则返回缓存的票据字符串，否则调用接口重新获取票据信息</returns>
public static string GetAccessToken(string appId, string secret)
{
HttpApplicationState apps = HttpContext.Current.Application;
SortedDictionary<string, object> cache = null;
string accessToken = null;
if (apps[CACHEKEYNAME] != null)
cache = apps[CACHEKEYNAME] as SortedDictionary<string, object>;
if (!General.IsNullable(cache))
{
DateTime saveTime = Convert.ToDateTime(cache["last_save_time"]);
int cost = (int)(DateTime.Now - saveTime).TotalSeconds;
int expires = Convert.ToInt32(cache["expires_in"]);
if (cost < expires)
accessToken = cache["access_token"].ToString();
}
if (General.IsNullable(accessToken))
{
if (!General.IsNullable(appId) && !General.IsNullable(secret))
{
string url = "https://api.weixin.qq.com/cgi-bin/token";
WxParameters paras = new WxParameters();
paras.SetValue("grant_type", "client_credential");
paras.SetValue("appid", appId);
paras.SetValue("secret", secret);
NetClient client = new NetClient();
string response = client.Get(url, paras.Parameters);
WxParameters result = new WxParameters();
if (result.FromJson(response))
{
if (result.ContainsValue("access_token") && result.ContainsValue("expires_in"))
{
cache = result.Parameters;
cache.Add("last_save_time", DateTime.Now);
apps[CACHEKEYNAME] = cache;
accessToken = result["access_token"] as string;
}
}
}
}
return accessToken;
}
private static string GetTicket(string appId, string secret)
{
HttpApplicationState apps = HttpContext.Current.Application;
SortedDictionary<string, object> cache = null;
string ticket = null;
if (apps[CACHEKEYNAME] != null)
cache = apps[CACHEKEYNAME] as SortedDictionary<string, object>;
if (!General.IsNullable(cache))
{
DateTime saveTime = Convert.ToDateTime(cache["last_save_time"]);
int cost = (int)(DateTime.Now - saveTime).TotalSeconds;
int expires = Convert.ToInt32(cache["expires_in"]);
if (cost < expires)
ticket = cache["ticket"] as string;
}
if (General.IsNullable(ticket))
{
if (!General.IsNullable(appId) && !General.IsNullable(secret))
{
string accessToken = InterfaceCredentials.GetAccessToken(appId, secret);
string url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket";
WxParameters paras = new WxParameters();
paras.SetValue("access_token", accessToken);
paras.SetValue("type", "jsapi");
NetClient client = new NetClient();
string response = client.Get(url, paras.Parameters);
WxParameters result = new WxParameters();
if (result.FromJson(response))
{
if (result.ContainsValue("ticket") && result.ContainsValue("expires_in"))
{
cache = result.Parameters;
cache.Remove("errcode");
cache.Remove("errmsg");
cache.Add("last_save_time", DateTime.Now);
apps[CACHEKEYNAME] = cache;
ticket = result["ticket"] as string;
}
}
}
}
return ticket;
}
/// <summary>
/// 获取微信服务器的IP地址列表
/// </summary>
/// <param name="accessToken">设置全局接口调用票据字符串</param>
/// <returns>如果票据有效，则返回微信服务器的IP地址列表，否则返回NULL</returns>
public static List<string> GetServerIP(string accessToken)
{
List<string> ipList = null;
if (!General.IsNullable(accessToken))
{
string url = "https://api.weixin.qq.com/cgi-bin/getcallbackip";
NetClient client = new NetClient();
string response = client.Get(url, new string[] { "access_token=" + accessToken });
WxParameters result = new WxParameters();
if (result.FromJson(response))
{
if (result.ContainsValue("ip_list"))
ipList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<string>>(result["ip_list"].ToString());
}
}
return ipList;
}
