//小程序?qū)懛?
<button open-type="getPhoneNumber" bindgetphonenumber="getPhoneNumber"></button>
//uni-app寫法
<button class="wx-login" open-type="getPhoneNumber" @getphonenumber="getPhoneNumber">微信用戶一鍵登錄</button>

methods: {
            getPhoneNumber: function(e) {
                var that = this;
                var userPhone = uni.getStorageSync('userPhone');
                if(userPhone != '')
                {
                    getApp().globalData.userPhone = userPhone;
                    uni.navigateTo({
                        url: 'personal'
                    });
                    return;
                }
                if (e.detail.errMsg == "getPhoneNumber:ok") {
                    //端口號(hào)是由后端服務(wù)器生成
                    wx.request({
                        url: '后端服務(wù)URL',
                        data: {
                            code: e.detail.code
                        },
                        method: "get",
                        success: function(res) {
                            uni.setStorageSync('userPhone', res.data);
                            getApp().globalData.userPhone = res.data;
                            uni.navigateTo({
                                url: 'personal'
                            });
                        },
                        fail: function(res) {
                            console.log(res.errMsg)
                        }
                    })
                }
            }
        }

"Wx": {
    "appid": "",
    "secret": "",
    "baseurl": "https://api.weixin.qq.com/",
    "getToken": "cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}",
    "getuserphonenumber": "wxa/business/getuserphonenumber?access_token={0}"
  }

public void ConfigureServices(IServiceCollection services)
 {
       services.AddHttpClient("WxClient", config => 
            {
                config.BaseAddress = new Uri(Configuration["Wx:baseurl"]);
                config.DefaultRequestHeaders.Add("Accept", "application/json");
            });
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
   GlobalContext.HttpClientFactory = app.ApplicationServices.GetService<IHttpClientFactory>();
}

using System;
using System.Reflection;
using System.Text;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.AspNetCore.StaticFiles;
using Microsoft.Extensions.Hosting;using Microsoft.AspNetCore.Http;
using System.Net.Http;
using Newtonsoft.Json;

namespace YiSha.Util
{
    public class GlobalContext
    {public static IHttpClientFactory HttpClientFactory { get; set; }

        public static IConfiguration Configuration { get; set; }public static string Token { get; set; }

        public static DateTime TimeOutDate { get; set; }

        /// <summary>
        /// 獲取Token
        /// </summary>
        /// <returns>Item1 Token;Item2 是否成功</returns>
        public static Result GetToken()
        {
            //判斷Token是否存在 以及Token是否在有效期內(nèi)
            if (string.IsNullOrEmpty(Token) || TimeOutDate > DateTime.Now)
            {
                //構(gòu)造請(qǐng)求鏈接
                var requestBuild = Configuration["Wx:getToken"];
                requestBuild = string.Format(requestBuild,
                                  Configuration["Wx:appid"],
                                  Configuration["Wx:secret"]
                               );
                using (var wxClient = HttpClientFactory.CreateClient("WxClient"))
                {
                    var httpResponse = wxClient.GetAsync(requestBuild).Result;
                    var dynamic = JsonConvert.DeserializeObject<dynamic>(
                                          httpResponse.Content.ReadAsStringAsync().Result
                                          );

                    if (dynamic.errmsg == null)//刷新Token
                    {
                        Token = dynamic.access_token;
                        var expires_in = Convert.ToDouble(dynamic.expires_in);
                        TimeOutDate = DateTime.Now.AddSeconds(expires_in);
                        return new Result(Token);
                    }
                    else
                    {
                        return new Result(errMsg:dynamic.errmsg);
                    }
                }
            }
            else
            {
                return new Result(Token); 
            }
        }

        
        public static Result GetUserPhoneNumber(string code)
        {
            var token = GetToken();
            if(!token.isSuccess)
            {
                return token;
            }
            //構(gòu)造請(qǐng)求鏈接
            var requestBuild = Configuration["Wx:getuserphonenumber"];
            requestBuild = string.Format(requestBuild, token.data);
            //建立HttpClient
            using (var wxClient = HttpClientFactory.CreateClient("WxClient"))
            {
                string content = $"{{\"code\":\"[code]\"}}";
                byte[] data = Encoding.UTF8.GetBytes(content);
                var bytearray = new ByteArrayContent(data);
                var httpResponse = wxClient.PostAsync(requestBuild, bytearray).Result;
                var dynamic = JsonConvert.DeserializeObject<dynamic>(
                                     httpResponse.Content.ReadAsStringAsync().Result
                                     );
                if (dynamic.errmsg == "ok")
                    return new Result(dynamic.phone_info.phoneNumber.ToString());
                else
                    return new Result(errMsg: dynamic.errmsg.ToString());
            }
        }

        /// <summary>
        ///  返回消息
        /// </summary>
        public class Result
        {
            public Result()
            {
            }

            /// <summary>
            /// 正確
            /// </summary>
            /// <param name="data"></param>
            public Result(string data)
            {
                this.data = data;
                this.isSuccess = true;
            }

            /// <summary>
            /// 錯(cuò)誤
            /// </summary>
            /// <param name="errMsg"></param>
            /// <param name="isSuccess"></param>
            public Result(string errMsg,bool isSuccess = false)
            {
                this.errMsg = errMsg;
                this.isSuccess = isSuccess;
            }

            public string data { get; set; }

            public string errMsg { get; set; }

            public bool isSuccess { get; set; }
        }
    }
}

[HttpGet]
        public string GetPhone(string code)
        {
            var phone = GlobalContext.GetUserPhoneNumber(code);
            if(!phone.isSuccess)
            {
                //錯(cuò)誤處理
            }
            return phone.data;
        }