获取AccessToken

最后更新于:2022-04-01 07:05:55

**微信企业号开发,需要调用微信企业号的相关接口,则必须使用AccessToken,但AccessToken需要corpid,corpsecret两个参数调用相关接口才能获取。** **而且每一个接口都有一定的次数限制,当然获取AccessToken的接口也有这个限制。每一个AccessToken的有效期为7200秒,也就是两个小时,在有效期内调用接口,则自动续期。因此建议在获取到AccessToken后,保存在在某一个地方,等到快过期时在重新获取。其实AccessToken有点类似于web程序中的session,这个有效期7200秒相当于session的有效期,调用接口,则自动续期,就相当于web程序中用户登陆后,和服务端有交互,session的有效期自然延长了。** 核心代码AccessTokenInfo类: ~~~ public class AccessTokenInfo { /// <summary> /// access_token /// </summary> public string access_token { get; set; } /// <summary> /// 凭证有效时间,单位:秒 /// </summary> public long expires_in { get; set; } /// <summary> /// 获取时间 /// </summary> public DateTime GetTime { get; set; } } ~~~ BLLAccessToken类 ~~~ /// <summary> /// 获取企业登陆access_token /// </summary> public static class BLLAccessToken { static AccessTokenInfo TokenInfo = null; public static string GetAccessToken() { string AccessToken = ""; DateTime now=DateTime.Now; if (TokenInfo == null) //首次获取 { TokenInfo = UpDateAccessToken(); } else { if (TokenInfo.GetTime.AddSeconds(TokenInfo.expires_in - 30) < now) //提前30秒重新获取 { TokenInfo = UpDateAccessToken(); } } AccessToken = TokenInfo.access_token; return AccessToken; } private static AccessTokenInfo UpDateAccessToken() { string CorpId = AppIdInfo.GetCorpId();//corpid string Secret = AppIdInfo.GetSecret(); //corpsecret AccessTokenInfo info = new AccessTokenInfo(); WebUtils ut = new WebUtils(); /// https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=wxb7f1db8fd6aa9d68&corpsecret=aoxZ7D5-SgLRUbKY2fwQykW36RqxoIdNIn1pIiGy9iSdXgMHwQCzUsniQVAsBCTt string urlFormat = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid={0}&corpsecret={1}"; var url = string.Format(urlFormat, CorpId, Secret); string temp = ut.DoGet(url); try { AccessTokenInfo tempAccessTokenjson = Tools.JsonStringToObj<AccessTokenInfo>(temp); info.access_token = tempAccessTokenjson.access_token; info.expires_in = tempAccessTokenjson.expires_in; info.GetTime = DateTime.Now; } catch(Exception ex) { LogInfo.Error("获取AccessToken异常", ex); } return info; } } ~~~ [微信企业号开发:常用的参数](http://blog.csdn.net/xuexiaodong009/article/details/46906867) [微信企业号开发:corpsecret到底在哪块呢?](http://blog.csdn.net/xuexiaodong009/article/details/46895401) [获取AccessToken官方文档](http://qydev.weixin.qq.com/wiki/index.php?title=%E4%B8%BB%E5%8A%A8%E8%B0%83%E7%94%A8)
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