2.以snsapi_userinfo为scope发起的网页授权,是用来获取用户的基本信息的。但这种授权需要用户手动同意,并且由于用户同意过,所以无须关注,就可在授权后获取该用户的基本信息。
public class WeChatLogin : Controller { /// <summary> /// 堆代码 duidaima.com /// 获取微信网页授权access_token /// </summary> /// <param name="state">自定义参数</param> /// <param name="code">通过用户授权后得到的code</param> /// <returns></returns> public async Task<Response> GetWeChatAccessToken(string state, string code) { string appId = "YourAppId"; string appSecret = "YourAppSecret"; string requestUrl = $"https://api.weixin.qq.com/sns/oauth2/access_token?appid={appId}&secret={appSecret}&code={code}&grant_type=authorization_code"; using (var httpClient = new HttpClient()) { var httpRequest = new HttpRequestMessage(HttpMethod.Get, requestUrl); using (var response = await httpClient.SendAsync(httpRequest)) { if (response.IsSuccessStatusCode) { var responseString = await response.Content.ReadAsStringAsync(); var responseData = JsonConvert.DeserializeObject<WeChatTokenResponse>(responseString); return new Response { Code = 1, Message = responseData.AccessToken }; } else { var errorResponseString = await response.Content.ReadAsStringAsync(); var errorData = JsonConvert.DeserializeObject<ErrorResponse>(errorResponseString); return new Response { Code = 0, Message = $"Failed to get access token: {errorData.ErrMsg}" }; } } } } } public class WeChatTokenResponse { [JsonProperty("access_token")] public string AccessToken { get; set; } [JsonProperty("expires_in")] public int ExpiresIn { get; set; } [JsonProperty("refresh_token")] public string RefreshToken { get; set; } [JsonProperty("openid")] public string OpenId { get; set; } [JsonProperty("scope")] public string Scope { get; set; } [JsonProperty("is_snapshotuser")] public int IsSnapshotUser { get; set; } [JsonProperty("unionid")] public string UnionId { get; set; } } public class ErrorResponse { [JsonProperty("errcode")] public int ErrCode { get; set; } [JsonProperty("errmsg")] public string ErrMsg { get; set; } }第三步、获取用户信息(需scope为 snsapi_userinfo)
public class WeChatLogin : Controller { /// <summary> /// 用户信息获取 /// </summary> /// <param name="accessToken"> 网页授权接口调用凭证,注意:此access_token与基础支持的access_token不同</param> /// <param name="openId">用户的唯一标识</param> /// <returns></returns> public async Task<Response> GetWeChatUserInfo(string accessToken, string openId) { string requestUrl = $"https://api.weixin.qq.com/sns/userinfo?access_token={accessToken}&openid={openId}&lang=zh_CN"; using (var httpClient = new HttpClient()) { var request = new HttpRequestMessage(HttpMethod.Get, requestUrl); var response = await httpClient.SendAsync(request); if (response.IsSuccessStatusCode) { var responseString = await response.Content.ReadAsStringAsync(); var responseData = JsonConvert.DeserializeObject<WeChatUserInfoResponse>(responseString); return new Response { Code = 1, Message = $"Nickname: {responseData.Nickname}, Province: {responseData.Province}, City: {responseData.City}" }; } else { var errorResponseString = await response.Content.ReadAsStringAsync(); var errorData = JsonConvert.DeserializeObject<ErrorResponse>(errorResponseString); return new Response { Code = 0, Message = $"Failed to get user info: {errorData.ErrMsg}" }; } } } public class WeChatUserInfoResponse { [JsonProperty("openid")] public string OpenId { get; set; } [JsonProperty("nickname")] public string Nickname { get; set; } [JsonProperty("sex")] public int Sex { get; set; } [JsonProperty("province")] public string Province { get; set; } [JsonProperty("city")] public string City { get; set; } [JsonProperty("country")] public string Country { get; set; } [JsonProperty("headimgurl")] public string HeadImgUrl { get; set; } [JsonProperty("privilege")] public List<string> Privilege { get; set; } [JsonProperty("unionid")] public string UnionId { get; set; } } public class ErrorResponse { [JsonProperty("errcode")] public int ErrCode { get; set; } [JsonProperty("errmsg")] public string ErrMsg { get; set; } } }