string url2 = "https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + str1; var client = new HttpClient(); var request = new HttpRequestMessage(HttpMethod.Post, url2); var content = new StringContent("{\"code\":\"" + code + "\"}", null, "application/json"); request.Content = content; var response = await client.SendAsync(request); response.EnsureSuccessStatusCode(); str2 = await response.Content.ReadAsStringAsync(); //注: 已经获取到access_token值了，使用postman访问https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=" + str1 (加json格式参数code)能获取到手机号数据。但是使用api代码时报错:{"errcode":40001,"errmsg":"invalid credential, access_token is invalid or not latest, could get access_token by getStableAccessToken, more details at https://mmbizurl.cn/s/JtxxFh33r ......

[图片]