Asp.Net Core 企业微信静默授权的实现

企业微信接口文档

1. 构造授权网页链接

2.回调获取到 Code 通过code+access_token去 请求用户信息

3. 获取access_token

调试准备工作 -->内网穿透+域名 推荐向日葵有免费的,免费的开发测试够用了

域名的配置成可信用

上代码 Demo下载

[ApiController]
  [Route("api/[controller]")]
  public class Auth2Controller : ControllerBase
  {
    private readonly string _agentId = "1000002";
    private readonly string _secret = "Y3f8ESBIBJoC8M_FPHOlpvmghS_Nn2ceFePRVZjw9_E";
    private readonly string _corpId = "wwbf72a7a059eac0f8";
    /// <summary>
    /// 授权地址
    /// </summary>
    private readonly string _auth2url = "https://open.weixin.qq.com/connect/oauth2/authorize";
    /// <summary>
    /// 授权回调地址
    /// </summary>
    private readonly string _callbackurl = "http:/      
      string access_token = await GetAccessToken();
      string url = $"{_getuserurl}?access_token={access_token}&code=[code]";
      HttpResponseMessage response = await _clientFactory.CreateClient().GetAsync(url);
      if (response.StatusCode == System.Net.HttpStatusCode.OK)
      {
        using (var responseStream = await response.Content.ReadAsStreamAsync())
        {
          var userinfo = JsonConvert.DeserializeObject<dynamic>(new StreamReader(responseStream).ReadToEnd());
          int errcode = userinfo.errcode;
          if (errcode == 0)
          {
            //企业成员
            string UserId = userinfo.UserId;
            //外部成员
            string OpenId = userinfo.OpenId;
            
            if (UserId==null)
            {
              _memoryCache.Set<string>("UserId", OpenId);
            }
            else
            {
              _memoryCache.Set<string>("UserId", UserId);
            }
          }
          else
          {
            _logger.LogError($"getuserinfo请求错误:{userinfo.errmsg}");
            return Ok();
          }
        }
      }      
      return Redirect($"{System.Web.HttpUtility.UrlDecode(state)}?UserId={_memoryCache.Get<string>("UserId")}");
    }
    public async Task<string> GetAccessToken()
    {
      if (_memoryCache.Get<string>("AccessToken") == null)
      {
        string url = $"{_gettokenurl}?corpid={_corpId}&corpsecret={_secret}";
        HttpResponseMessage response = await _clientFactory.CreateClient().GetAsync(url);
        if (response.StatusCode == System.Net.HttpStatusCode.OK)
        {
          using (var responseStream = await response.Content.ReadAsStreamAsync())
          {
            var access_token_result = JsonConvert.DeserializeObject<dynamic>(new StreamReader(responseStream).ReadToEnd());
            int errcode = access_token_result.errcode;
            if (errcode == 0)
            {
              string access_token = access_token_result.access_token;
              int expires_in = access_token_result.expires_in;
              _memoryCache.Set<string>("AccessToken", access_token, DateTimeOffset.Now.AddSeconds(expires_in - 10));
            }
            else
            {
              _logger.LogError($"access_token请求错误:{access_token_result.errmsg }");
            }
          }
        }
      }
      return _memoryCache.Get<string>("AccessToken");
    }
  }

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