在借鉴前两篇获取微信用户基本信息的基础下,本人也总结整理了一些个人笔记:如何通过OAuth2.0获取微信用户信息
1、首先在某微信平台下配置OAuth2.0授权回调页面:
2、通过appid构造url获取微信回传code值(appid可在微信平台下找到)
1)、微信不弹出授权页面url:
A、code回传到页面wxProcess2.aspx,不带参数
Response.Redirect("https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=http://localhost:8888/wxProcess2.aspx&response_type=code&scope=snsapi_base&state=1#wechat_redirect");
B、code回传到页面wxProcess2.aspx,带参数reurl,即wxProcess2.aspx获得code的同时,也能获取reurl的值,具体如下:
Response.Redirect("https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=http://localhost:8888/wxProcess2.aspx?reurl=" + reurl +"&response_type=code&scope=snsapi_base&state=1#wechat_redirect");
2)、微信弹出授权页面url:需要用户授权,才能获取code及后面需要获取的用户信息
Response.Redirect("https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=http://localhost:8888/wxProcess2.aspx?reurl=" + reurl + "&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect");
说明:微信是否弹出授权页面url的区别只在一个参数scope,不弹出微信授权页面:scope=snsapi_base,弹出微信授权页面:scope=snsapi_userinfo。
微信授权页面如下:
3、通过appid、secret、code构造url,获取微信用户的openid和access token。appid、secret可在微信平台下找到,code已在上面方法中获取并回传。具体访问url:
https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appid + "&secret=" + appsecret + "&code=" + Code + "&grant_type=authorization_code
4、通过openid、access token获取用户信息,具体访问url:
https://api.weixin.qq.com/sns/userinfo?access_token=" + REFRESH_TOKEN + "&openid=" + OPENID
说明:主要通过访问微信的3个url地址并回传数据,获取微信用户基本信息
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具体代码:
1、获取微信code处理页面:wxProcess.aspx
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string reurl = "";
//传递参数,获取用户信息后,可跳转到自己定义的页面,想怎么处理就怎么处理
if (Request.QueryString["reurl"] != null && Request.QueryString["reurl"] != "")
{
reurl = Request.QueryString["reurl"].ToString();
}
else
{
reurl = "http://www.csdn.net";
}
string code = "";
//弹出授权页面(如在不弹出授权页面基础下未获得openid,则弹出授权页面,提示用户授权)
if (Request.QueryString["auth"] != null && Request.QueryString["auth"] != "" && Request.QueryString["auth"] == "1")
{
Response.Redirect("https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=http://localhost:8888/wxProcess2.aspx?reurl=" + reurl + "&response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect");
}
else
{
//不弹出授权页面
Response.Redirect("https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appid + "&redirect_uri=http://localhost:8888/wxProcess2.aspx?reurl=" + reurl + "&response_type=code&scope=snsapi_base&state=1#wechat_redirect"); }
}
}
2、获取微信code值回传到自己的页面wxProcess2.aspx:
public string reurl = "";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//获取从wxProcess.aspx传递过来的跳转地址reurl
if (Request.QueryString["reurl"] != null && Request.QueryString["reurl"] != "")
{
reurl = Request.QueryString["reurl"].ToString();
}
string code = "";
if (Request.QueryString["code"] != null && Request.QueryString["code"] != "")
{
//获取微信回传的code
code = Request.QueryString["code"].ToString();
OAuth_Token Model = Get_token(code); //获取token
OAuthUser OAuthUser_Model = Get_UserInfo(Model.access_token, Model.openid );
if(OAuthUser_Model.openid!=null && OAuthUser_Model.openid !="") //已获取得openid及其他信息
{
//在页面上输出用户信息
Response.Write("用户OPENID:" + OAuthUser_Model.openid + "
用户昵称:" + OAuthUser_Model.nickname + "
性别:" + OAuthUser_Model.sex + "
所在省:" + OAuthUser_Model.province + "
所在市:" + OAuthUser_Model.city + "
所在国家:" + OAuthUser_Model.country + "
头像地址:" + OAuthUser_Model.headimgurl + "
用户特权信息:" + OAuthUser_Model.privilege);
//或跳转到自己的页面,想怎么处理就怎么处理
Response.Redirect(reurl);
}
else //未获得openid,回到wxProcess.aspx,访问弹出微信授权页面
{
Response.Redirect("wxProcess.aspx?auth=1");
}
}
}
}
#region 属性
public string appid = "wx6669e231bffa123f"; //公众微信平台下可以找到
public string appsecret = "9d693f7a81236c123464281115p78445"; //公众微信平台下可以找到
#endregion
//根据appid,secret,code获取微信openid、access token信息
protected OAuth_Token Get_token(string Code)
{
//获取微信回传的openid、access token
string Str = GetJson("https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + appid + "&secret=" + appsecret + "&code=" + Code + "&grant_type=authorization_code");
//微信回传的数据为Json格式,将Json格式转化成对象
OAuth_Token Oauth_Token_Model = JsonHelper.ParseFromJson(Str);
return Oauth_Token_Model;
}
//刷新Token(好像这个刷新Token没有实际作用)
protected OAuth_Token refresh_token(string REFRESH_TOKEN)
{
string Str = GetJson("https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=" + appid + "&grant_type=refresh_token&refresh_token=" + REFRESH_TOKEN);
OAuth_Token Oauth_Token_Model = JsonHelper.ParseFromJson(Str);
return Oauth_Token_Model;
}
//根据openid,access token获得用户信息
protected OAuthUser Get_UserInfo(string REFRESH_TOKEN, string OPENID)
{
string Str = GetJson("https://api.weixin.qq.com/sns/userinfo?access_token=" + REFRESH_TOKEN + "&openid=" + OPENID);
OAuthUser OAuthUser_Model = JsonHelper.ParseFromJson(Str);
return OAuthUser_Model;
}
//访问微信url并返回微信信息
protected string GetJson(string url)
{
WebClient wc = new WebClient();
wc.Credentials = CredentialCache.DefaultCredentials;
wc.Encoding = Encoding.UTF8;
string returnText = wc.DownloadString(url);
if (returnText.Contains("errcode"))
{
//可能发生错误
}
return returnText;
}
///
/// token类
///
public class OAuth_Token
{
public OAuth_Token()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
//access_token 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
//expires_in access_token接口调用凭证超时时间,单位(秒)
//refresh_token 用户刷新access_token
//openid 用户唯一标识,请注意,在未关注公众号时,用户访问公众号的网页,也会产生一个用户和公众号唯一的OpenID
//scope 用户授权的作用域,使用逗号(,)分隔
public string _access_token;
public string _expires_in;
public string _refresh_token;
public string _openid;
public string _scope;
public string access_token
{
set { _access_token = value; }
get { return _access_token; }
}
public string expires_in
{
set { _expires_in = value; }
get { return _expires_in; }
}
public string refresh_token
{
set { _refresh_token = value; }
get { return _refresh_token; }
}
public string openid
{
set { _openid = value; }
get { return _openid; }
}
public string scope
{
set { _scope = value; }
get { return _scope; }
}
}
///
/// 用户信息类
///
public class OAuthUser
{
public OAuthUser()
{ }
#region 数据库字段
private string _openID;
private string _searchText;
private string _nickname;
private string _sex;
private string _province;
private string _city;
private string _country;
private string _headimgUrl;
private string _privilege;
#endregion
#region 字段属性
///
/// 用户的唯一标识
///
public string openid
{
set { _openID = value; }
get { return _openID; }
}
///
///
///
public string SearchText
{
set { _searchText = value; }
get { return _searchText; }
}
///
/// 用户昵称
///
public string nickname
{
set { _nickname = value; }
get { return _nickname; }
}
///
/// 用户的性别,值为1时是男性,值为2时是女性,值为0时是未知
///
public string sex
{
set { _sex = value; }
get { return _sex; }
}
///
/// 用户个人资料填写的省份
///
public string province
{
set { _province = value; }
get { return _province; }
}
///
/// 普通用户个人资料填写的城市
///
public string city
{
set { _city = value; }
get { return _city; }
}
///
/// 国家,如中国为CN
///
public string country
{
set { _country = value; }
get { return _country; }
}
///
/// 用户头像,最后一个数值代表正方形头像大小(有0、46、64、96、132数值可选,0代表640*640正方形头像),用户没有头像时该项为空
///
public string headimgurl
{
set { _headimgUrl = value; }
get { return _headimgUrl; }
}
///
/// 用户特权信息,json 数组,如微信沃卡用户为(chinaunicom)其实这个格式称不上JSON,只是个单纯数组
///
public string privilege
{
set { _privilege = value; }
get { return _privilege; }
}
#endregion
}
///
/// 将Json格式数据转化成对象
///
public class JsonHelper
{
///
/// 生成Json格式
///
///
///
///
public static string GetJson(T obj)
{
DataContractJsonSerializer json = new DataContractJsonSerializer(obj.GetType());
using (MemoryStream stream = new MemoryStream())
{
json.WriteObject(stream, obj);
string szJson = Encoding.UTF8.GetString(stream.ToArray()); return szJson;
}
}
///
/// 获取Json的Model
///
///
///
///
public static T ParseFromJson(string szJson)
{
T obj = Activator.CreateInstance();
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
return (T)serializer.ReadObject(ms);
}
}
}
输出微信用户信息: