.NET微信公众号获取OpenID和用户信息_实用技巧_

 public partial class Index : System.Web.UI.Page { //用户id public string openid = ""; //公众号信息部分 public string appid = ConfigurationManager.AppSettings["AppId"]; public string appsecret = ConfigurationManager.AppSettings["AppSecret"]; public string redirect_uri =HttpUtility.UrlEncode("https://www.jb51.net"); public string scope = "【删除这个并填入请求类型，例如：snsapi_userinfo】"; #region 显示页面 public string accesstoken; public string nickname; public string sex; public string headimgurl; public string province; public string country; public string language; public string city; public string privilege = ""; #endregion protected void Page_Load(object sender, EventArgs e) { /* *微信认证获取openid部分： *临时认证code */ //微信认证部分：第二步 获得code string code = Request["code"]; if (string.IsNullOrEmpty(code)) { //如果code没获取成功，重新拉取一遍 OpenAccess(); } //微信认证部分：第三步 获得openid string url = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", appid, appsecret, code); string result = HttpClientHelper.GetResponse(url); LogHelper.WriteFile(result); JObject outputObj = JObject.Parse(result); //微信认证部分：第四步 获得更多信息 accesstoken = outputObj["access_token"].ToString(); openid = outputObj["openid"].ToString(); url = string.Format("https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}&lang=zh_CN",accesstoken,openid); string result1 = HttpClientHelper.GetResponse(url); LogHelper.WriteFile(result1); JObject outputObj1 = JObject.Parse(result1);//将json转为数组 //以下是第四步获得的信息： nickname = outputObj1["nickname"].ToString(); //昵称 sex = outputObj1["sex"].ToString(); //性别什么的 headimgurl = outputObj1["headimgurl"].ToString(); //头像url province = outputObj1["province"].ToString(); ; country = outputObj1["country"].ToString(); ; language = outputObj1["language"].ToString(); ; city = outputObj1["city"].ToString(); ; //将获得的用户信息填入到session中 Session["openid"] = outputObj1["openid"]; //转向回入口 //OpenAccess(); } /* * 接入入口 * 开放到微信菜单中调用 * @param $dir_url 来源url * @since 1.0 * @return void */ public void OpenAccess() { //判断session不存在 if (Session["openid"] == null) { //认证第一步：重定向跳转至认证网址 string url = string.Format("https://open.weixin.qq.com/connect/oauth2/authorize?appid={0}&redirect_uri={1}&&response_type=code&scope=snsapi_userinfo&m=oauth2#wechat_redirect", appid, redirect_uri); Response.Redirect(url); } //判断session存在 else { //跳转到前端页面.aspx Response.Redirect(Request.Url.ToString()); } } } 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Index.aspx.cs" Inherits="TEST.Index" %>
 openid:<%=openid%>
 nickname:<%=nickname%>
 sex:<%=sex%>
 language:<%=language%>
 city:<%=city%>
 country:<%=country%>
 headimgurl:
 privilege:<%=privilege%>

 public class HttpClientHelper { /// 
 /// get请求 /// 
 ///  ///  public static string GetResponse(string url) { if (url.StartsWith("https")) { ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; } var httpClient = new HttpClient(); httpClient.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json")); HttpResponseMessage response = httpClient.GetAsync(url).Result; if (response.IsSuccessStatusCode) { string result = response.Content.ReadAsStringAsync().Result; return result; } return null; } public static T GetResponse(string url) where T : class, new() { if (url.StartsWith("https")) ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; var httpClient = new HttpClient(); httpClient.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json")); HttpResponseMessage response = httpClient.GetAsync(url).Result; T result = default(T); if (response.IsSuccessStatusCode) { Task t = response.Content.ReadAsStringAsync(); string s = t.Result; result = JsonConvert.DeserializeObject(s); } return result; } /// 
 /// post请求 /// 
 ///  /// post数据 ///  public static string PostResponse(string url, string postData) { if (url.StartsWith("https")) ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpContent httpContent = new StringContent(postData); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json"); var httpClient = new HttpClient(); HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result; if (response.IsSuccessStatusCode) { string result = response.Content.ReadAsStringAsync().Result; return result; } return null; } /// 
 /// 发起post请求 /// 
 ///  /// url /// post数据 ///  public static T PostResponse(string url, string postData) where T : class, new() { if (url.StartsWith("https")) ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpContent httpContent = new StringContent(postData); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json"); var httpClient = new HttpClient(); T result = default(T); HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result; if (response.IsSuccessStatusCode) { Task t = response.Content.ReadAsStringAsync(); string s = t.Result; result = JsonConvert.DeserializeObject(s); } return result; } /// 
 /// V3接口全部为Xml形式，故有此方法 /// 
 ///  ///  ///  ///  public static T PostXmlResponse(string url, string xmlString) where T : class, new() { if (url.StartsWith("https")) ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; HttpContent httpContent = new StringContent(xmlString); httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json"); var httpClient = new HttpClient(); T result = default(T); HttpResponseMessage response = httpClient.PostAsync(url, httpContent).Result; if (response.IsSuccessStatusCode) { Task t = response.Content.ReadAsStringAsync(); string s = t.Result; result = XmlDeserialize(s); } return result; } /// 
 /// 反序列化Xml /// 
 ///  ///  ///  public static T XmlDeserialize(string xmlString) where T : class, new() { try { var ser = new XmlSerializer(typeof (T)); using (var reader = new StringReader(xmlString)) { return (T) ser.Deserialize(reader); } } catch (Exception ex) { throw new Exception("XmlDeserialize发生异常：xmlString:" + xmlString + "异常信息：" + ex.Message); } } }