/// <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>
/// <returns></returns>
public static string GetAccessToken()
{
var token = string.Empty;
var expirationTime = DateTime.Now;
// 读取XML文件中的数据，并显示出来 ，注意文件路径
var appid = "";
var secret = "";
var filePath = Utils.GetMapPath("~/xmlconfig/WeChatMiniProgram.config");
var doc = new XmlDocument();
doc.Load(filePath);
appid = doc.SelectSingleNode(@"Root/appid")?.InnerText;
secret = doc.SelectSingleNode(@"Root/secret")?.InnerText;
token = doc.SelectSingleNode(@"Root/Access_Token")?.InnerText;
var expirationTimeString = doc.SelectSingleNode(@"Root/Access_ExpirationTime")?.InnerText;
if (ValidateUtil.IsDateTime(expirationTimeString))
{
expirationTime = Convert.ToDateTime(expirationTimeString);
}
if (!string.IsNullOrEmpty(appid) && !string.IsNullOrEmpty(secret) && (string.IsNullOrEmpty(token) || DateTime.Now > expirationTime))
{
expirationTime = DateTime.Now;
var strUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
var model = new AccessToken();
var returnContent = HttpRequestUtil.HwGet(strUrl);
var accessToken = JsonUtil.JsonToObject <AccessToken>(returnContent);
model.access_token = accessToken.access_token;
model.expires_in = accessToken.expires_in;
doc.SelectSingleNode(@"Root/Access_Token").InnerText = model.access_token;
expirationTime = expirationTime.AddSeconds(int.Parse(model.expires_in));
doc.SelectSingleNode(@"Root/Access_ExpirationTime").InnerText = expirationTime.ToString("yyyy-MM-dd HH:mm:ss:ffff");
doc.Save(filePath);
token = model.access_token;
}
return(token);
}
/// <summary>
/// 获取时间戳
/// </summary>
/// <param name="dt">不要用UTC时间，直接用本地时间</param>
/// <param name="precision">精度(秒：s,毫秒：ms)</param>
/// <returns></returns>
public static long GetTimeStamp(string dt, string precision = "s")
{
long currentTicks = DateTime.Now.ToUniversalTime().Ticks;
if (ValidateUtil.IsDateTime(dt))
{
currentTicks = DateTime.Parse(dt).ToUniversalTime().Ticks;
}
if (precision.Equals("ms", StringComparison.OrdinalIgnoreCase))
{
//毫秒
return((currentTicks - 621355968000000000) / 10000);
}
else if (precision.Equals("s", StringComparison.OrdinalIgnoreCase))
{
//秒
return((currentTicks - 621355968000000000) / 10000000);
}
else
{
return((currentTicks - 621355968000000000) / 10000000);
}
}
/// <summary>
/// 判断是否为合法日期，必须大于1800年1月1日
/// </summary>
/// <param name="dateTime">输入日期字符串</param>
/// <returns>True/False</returns>
public static bool IsDateTime(string dateTime)
{
return(ValidateUtil.IsDateTime(dateTime));
}
