/// <summary>
/// 获取接口token
/// </summary>
/// <param name="type">接口类型</param>
/// <param name="isForce">是否强刷</param>
public static string GetAccess_token(Access_Type type = Access_Type.weixin, bool isForce = false)
{
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("~/config/APIConfig.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(type.ToString() + "_Access_Token").InnerText;
YouXRQ = Convert.ToDateTime(xml.SelectSingleNode("xml").SelectSingleNode(type + "_Access_YouXRQ").InnerText);
if (isForce || DateTime.Now > YouXRQ)
{
DateTime _youxrq = DateTime.Now;
Access_token mode = GetAccess_tokenByServer(type);
xml.SelectSingleNode("xml").SelectSingleNode(type.ToString() + "_Access_Token").InnerText = mode.access_token;
_youxrq = _youxrq.AddSeconds(int.Parse(mode.expires_in));
xml.SelectSingleNode("xml").SelectSingleNode(type.ToString() + "_Access_YouXRQ").InnerText = _youxrq.ToString();
xml.Save(filepath);
Token = mode.access_token;
}
return(Token);
}
/*
* access_token是变化的,有自己的周期,官方解释为:"有效期为7200秒",这就要 求我们把获得的access_token存入一个物理文件或者Application中,请求到过期后修改这些内容,需要用的时候读出来.
* 有些人可能想到了，如果过期我就在获得一个就好了,不用物理文件和Application也可以达到同样的效果,但是需要注意了微信平台对每天获得
* access_token的次数也作了限制，一个用户出发多次，如果用户多，那肯定就超出了。所以我们还是按照以上的思路实现这些功能:
* 在此之前我们已经了解了获得access_token的方法(连接),现在只需要保证它的随时更新就好了.
*/
/// <summary>
/// 从服务器获取access_token
/// </summary>
private static Access_token GetAccess_tokenByServer(Access_Type type = Access_Type.weixin)
{
SiteSettings masterSettings = SettingsManager.GetMasterSettings(true);
string strUrl = "";
switch (type)
{
case Access_Type.weixin:
//strUrl = "https://api.vdian.com/token?grant_type=client_credential&appkey=" + masterSettings.WeixinAppId + "&secret=" + masterSettings.WeixinAppSecret;
strUrl = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", masterSettings.WeixinAppId, masterSettings.WeixinAppSecret);
break;
case Access_Type.weidian:
//strUrl = "https://api.vdian.com/token?grant_type=client_credential&appkey=" + masterSettings.WeiDianAppId + "&secret=" + masterSettings.WeixinAppSecret;
break;
}
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();
//在这里对Access_token 赋值
//Access_token token = new Access_token();
//token = JsonHelper.ParseFromJson<Access_token>(content);
//token = JsonConvert.DeserializeObject<Access_token>(content);
JObject obj2 = JsonConvert.DeserializeObject(content) as JObject;
if (obj2 != null && obj2.ToString().Contains("result"))
{
obj2 = JsonConvert.DeserializeObject(obj2["result"].ToString()) as JObject;
mode.access_token = obj2["access_token"].ToString();
mode.expires_in = obj2["expire_in"].ToString();
}
else if (obj2 != null && type == Access_Type.weixin)
{
obj2 = JsonConvert.DeserializeObject(obj2.ToString()) as JObject;
mode.access_token = obj2["access_token"].ToString();
mode.expires_in = obj2["expires_in"].ToString();
}
}
return(mode);
}