1.首先根據appid 獲取到預授權碼的code
string Appid = "******";//appid。由於網頁授權與js-jdk使用不同微信,所以暫時獨立於此處。 string redirect_uri = "http://*********";//這里是回調地址的url string state = filterContext.HttpContext.Request.Url.ToString();//這里的state是 state = state.Replace("?", "|").Replace("&", "!!"); string url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + Appid + "&redirect_uri=" + redirect_uri + "&response_type=code&scope=snsapi_userinfo&state=" + state + "#wechat_redirect"; filterContext.HttpContext.Response.Redirect(url);
2.根據預授權碼獲取個人的用戶信息
//根據code獲取預授權碼asstoken 和 openid 和Unionid
string url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + df.getAppid() + "&secret=" + df.getAppSecret() + "&code=" + code + "&grant_type=authorization_code"; WebClient wc = new WebClient(); wc.Credentials = CredentialCache.DefaultCredentials; Byte[] pageData = wc.DownloadData(url); string htmlstr = System.Text.Encoding.GetEncoding("utf-8").GetString(pageData);
//根據預授權碼獲取用戶個人信息
df.get_json方法是獲取當前json字符串的當前節點的值
url = "https://api.weixin.qq.com/sns/userinfo?access_token=" + df.get_json(htmlstr, "access_token") + "&openid=" + df.get_json(htmlstr, "openid") + "&lang=zh_CN"; wc = new WebClient(); wc.Credentials = CredentialCache.DefaultCredentials; pageData = wc.DownloadData(url); htmlstr = System.Text.Encoding.GetEncoding("utf-8").GetString(pageData); return htmlstr;
3.如果想要根據openid 獲取Unionid 則需要以下步奏
3.1根據appid 和appscreat 獲取當前公眾號的asstoken
3.2根據openid和UnionId獲取用戶信息(這里的用戶基本信息只能是關注的才能獲取完全基本信息,未關注只能獲取openid和unionid)