微信開放平台之網站受權微信登錄功效。本站提示廣大學習愛好者：（微信開放平台之網站受權微信登錄功效）文章只能為提供參考，不一定能成為您想要的結果。以下是微信開放平台之網站受權微信登錄功效正文
1 微信開放平台：https://open.weixin.qq.com/
2 微信官方教程：https://open.weixin.qq.com/cgi-bin/showdocument?action=dir_list&t=resource/res_list&verify=1&id=open1419316505&token=&lang=zh_CN
3.pc頁面顯示
4. 經由過程官方供給的文檔，我們可以看出一共分4個步調
第一步：要求CODE
第二步：經由過程code獲得access_token
第三步：經由過程access_token挪用接口
第4步：獲得用戶小我信息（UnionID機制）
api：焦點代碼
public class weixin_helper
{
public weixin_helper()
{
}
/// <summary>
/// 依據AppID和AppSecret取得access token(默許過時時光為2小時)
/// </summary>
/// <returns>Dictionary</returns>
public static Dictionary<string, object> get_access_token()
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2);
string send_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" +
config.oauth_app_id + "&secret=" + config.oauth_app_key + "";
//發送並接收前往值
string result = Utils.HttpGet(send_url);
if (result.Contains("errmsg"))
{
return null;
}
try
{
Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result);
return dic;
}
catch
{
return null;
}
} /// <summary>
/// 獲得暫時的Access Token(默許過時時光為2小時)
/// </summary>
/// <param name="code">暫時Authorization Code</param>
/// <param name="state">避免CSRF進擊，勝利受權後回調時會原樣帶回</param>
/// <returns>Dictionary</returns>
public static Dictionary<string, object> get_access_token(string code, string state)
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2);
string send_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" +
config.oauth_app_id + "&secret=" + config.oauth_app_key + "&code="+code+"&grant_type=authorization_code";
//發送並接收前往值
string result = Utils.HttpGet(send_url);
if (result.Contains("errmsg"))
{
return null;
}
try
{
Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result);
return dic;
}
catch
{
return null;
}
}
/// <summary>
/// 依據access_token斷定access_token能否過時
/// </summary>
/// <param name="access_token"></param>
/// <returns>true表現未掉效</returns>
public static bool check_access_token(string access_token)
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2);
string send_url = "https://api.weixin.qq.com/sns/auth?access_token=" + access_token + "&openid=" + config.oauth_app_id;
//發送並接收前往值
string result = Utils.HttpGet(send_url);
try
{
Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result);
if (dic.ContainsKey("errmsg"))
{
if (dic["errmsg"].ToString()=="ok")
{
return true;
}
else
{
return false;
}
}
return false;
}
catch
{
return false;
}
}
/// <summary>
/// 若fresh_token已過時則依據refresh_token獲得新的refresh_token
/// </summary>
/// <param name="refresh_token">refresh_token</param>
/// <returns>Dictionary</returns>
public static Dictionary<string, object> get_refresh_token(string refresh_token)
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2);
string send_url =
"https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=" +
config.oauth_app_id + "&grant_type=refresh_token&refresh_token=" + refresh_token;
//發送並接收前往值
string result = Utils.HttpGet(send_url);
if (result.Contains("errmsg"))
{
return null;
}
try
{
Dictionary<string, object> dic = JsonConvert.DeserializeObject<Dictionary<string, object>>(result);
return dic;
}
catch
{
return null;
}
}
/// <summary>
/// 獲得登錄用戶本身的根本材料
/// </summary>
/// <param name="access_token">暫時的Access Token</param>
/// <param name="open_id">用戶openid</param>
/// <returns>Dictionary</returns>
public static Dictionary<string, object> get_user_info(string access_token, string open_id)
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2);
//發送並接收前往值
string send_url = "https://api.weixin.qq.com/sns/userinfo?access_token="+access_token+"&openid="+open_id;
//發送並接收前往值
string result = Utils.HttpGet(send_url);
if (result.Contains("errmsg"))
{
return null;
}
//反序列化JSON
Dictionary<string, object> dic = JsonHelper.DataRowFromJSON(result);
return dic;
}
}
掌握器的焦點代碼：
#region 微信登錄
/// <summary>
/// 微信登錄
/// </summary>
public ActionResult WeChat()
{
//取得設置裝備擺設信息
oauth_config config = oauth_helper.get_config(2); //主鍵id
if (config == null)
{
return Content("失足了，您還沒有設置裝備擺設微信相干的API信息！");
}
string state = Guid.NewGuid().ToString().WordStr("-", "");
Session["oauth_state"] = state;
string send_url =
"https://open.weixin.qq.com/connect/qrconnect?appid=" + config.oauth_app_id +
"&redirect_uri=" + Utils.UrlEncode(config.return_uri.ToLower()) +
"&response_type=code&scope=snsapi_login&state=" + state +
"#wechat_redirect";
//開端發送
return Redirect(send_url); //跳轉到微信本身 指定的聯系關系上岸頁面
}
/// <summary>
/// 微信登錄前往action
/// </summary>
public ActionResult WeChatReturnUrl(string state, string code)
{
//獲得前往參數
string access_token = string.Empty;
string expires_in = string.Empty;
string client_id = string.Empty;
string openid = string.Empty;
string refresh_token = string.Empty;
if (Session["oauth_state"] == null || Session["oauth_state"].ToString() == "" ||
state != Session["oauth_state"].ToString() || string.IsNullOrEmpty(code))//若前往參數中未包括code或許state沒有經由過程驗證則提醒失足
{
return Content("失足啦，state未初始化！");
}
//第一步：經由過程code來獲得Access Token和openid
Dictionary<string, object> dic1 = weixin_helper.get_access_token(code, state);
if (dic1 == null || !dic1.ContainsKey("access_token"))
{
return Content("毛病代碼：，沒法獲得Access Token，請檢討App Key能否准確！");
}
if (dic1 == null || !dic1.ContainsKey("openid"))
{
if (dic1.ContainsKey("errmsg"))
{
return Content("errcode：" + dic1["errcode"] + ",errmsg：" + dic1["errmsg"]);
}
else
{
return Content("失足啦，沒法獲得用戶受權Openid！");
}
}
access_token = dic1["access_token"].ToString();//獲得access_token
expires_in = dic1["expires_in"].ToString();//獲得過時時光
refresh_token = dic1["refresh_token"].ToString();//獲得用於從新刷新access_token的憑證
openid = dic1["openid"].ToString();//用戶獨一標示openid
//貯存獲得數據用到的信息
Session["oauth_name"] = "webchat";
Session["oauth_access_token"] = access_token;
Session["oauth_openid"] = openid;
Session["oauth_refresh_token"] = refresh_token;
#region todo 將獲得到的用戶信息保留到數據庫中
#endregion
//第二步：經由過程Access Token和openid來獲得用戶的根本信息
//Dictionary<string, object> dic2 = weixin_helper.get_user_info(access_token,openid);
//第三步：跳轉到指定頁面
return Content(WeChatResultJson());
}
/// <summary>
/// 微信登錄前往action, 處置用戶信息
/// </summary>
public string WeChatResultJson()
{
string oauth_access_token = string.Empty;
string oauth_openid = string.Empty;
string oauth_name = string.Empty;
string oauth_refresh_token = string.Empty;
if (Session["oauth_name"] == null || Session["oauth_access_token"] == null ||
Session["oauth_openid"] == null)
{
return "{\"ret\":\"1\", \"msg\":\"失足啦，Access Token已過時或不存在！\"}";
}
oauth_name = Session["oauth_name"].ToString();
oauth_access_token = Session["oauth_access_token"].ToString();
oauth_openid = Session["oauth_openid"].ToString();
oauth_refresh_token = Session["oauth_refresh_token"].ToString();
if (!weixin_helper.check_access_token(oauth_access_token)) //挪用access_token前需斷定能否過時
{
Dictionary<string, object> dic1 = weixin_helper.get_refresh_token(oauth_refresh_token);//假如已過時則從新換取新的access_token
if (dic1 == null || !dic1.ContainsKey("access_token"))
{
return "{\"openid\":\"0\", \"msg\":\"失足啦，沒法獲得access_token！\"}";
}
oauth_access_token = dic1["access_token"].ToString();
}
Dictionary<string, object> dic = weixin_helper.get_user_info(oauth_access_token, oauth_openid);
if (dic == null)
{
return "{\"openid\":\"0\", \"msg\":\"失足啦，沒法獲得受權用戶信息！\"}";
}
try
{
StringBuilder str = new StringBuilder();
str.Append("{");
str.Append("\"openid\": \"" + dic["openid"].ToString() + "\", ");
str.Append("\"nickname\": \"" + dic["nickname"].ToString() + "\", ");
str.Append("\"sex\": \"" + dic["sex"].ToString() + "\", ");
str.Append("\"province\": \"" + dic["province"].ToString() + "\", ");
str.Append("\"city\": \"" + dic["city"].ToString() + "\", ");
str.Append("\"country\": \"" + dic["country"].ToString() + "\", ");
str.Append("\"headimgurl\": \"" + dic["headimgurl"].ToString() + "\", ");
str.Append("\"privilege\": \"" + dic["privilege"].ToString() + "\", ");
str.Append("\"unionid\": \"" + dic["unionid"].ToString() + "\"");
str.Append("\"oauth_name\": \"" + oauth_name + "\"");
str.Append("\"oauth_access_token\": \"" + oauth_access_token + "\"");
str.Append("\"oauth_openid\": \"" + oauth_openid + "\"");
str.Append("}");
return str.ToString();
}
catch
{
return "{\"ret\":\"0\", \"msg\":\"失足啦，沒法獲得受權用戶信息！\"}";
}
}
#endregion
