.NET微信公众号获取OpenID和用户信息实例解析

本文实例为大家分享了微信公众平台实现获取用户OpenID的方法，供大家参考，具体内容如下

Index.aspx.cs代码:

 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("http://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());   }  } }

Index.aspx内容:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Index.aspx.cs" Inherits="TEST.Index" %>    <script type="text/javascript"> 《script》 
 
  
 
 

HttpClientHelper.cs代码:

public class HttpClientHelper {  /// 
  ///  get请求  /// 
  /// 
  ///   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);   }  } }

结果如图：

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