private static string MakeSign(string appId, string secret, string nonceStr, string timeStamp)
{
string ticket = GetTicket(appId, secret);
string sign = string.Empty;
if (!General.IsNullable(ticket))
{
WxParameters paras = new WxParameters();
paras.SetValue("noncestr", nonceStr);
paras.SetValue("jsapi_ticket", ticket);
paras.SetValue("timestamp", timeStamp);
paras.SetValue("url", HttpContext.Current.Request.Url.AbsoluteUri);
string make = paras.ToQueryString();
StringBuilder md = new StringBuilder();
byte[] buffer = SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(make));
foreach (byte b in buffer)
md.Append(b.ToString("x2"));
sign = md.ToString();
}
return sign;
}
/// <summary>
/// 使当前第三方站点跳转到微信授权URI地址，并获取Code
/// </summary>
/// <param name="appId">设置微信应用的唯一标识</param>
/// <param name="redirectUri">设置授权后重定向的回调链接地址，如果不设置则默认使用当前第三方站点的当前URL</param>
/// <param name="scope">设置应用授权作用域</param>
/// <param name="state">设置自定义的状态参数，如果不设置，则默认情况下生成一个字符串</param>
public static void RedirectConnectCode(string appId, string redirectUri, string scope, string state = null)
{
if (!General.IsNullable(appId))
{
HttpResponse response = HttpContext.Current.Response;
scope = General.ToNullable(scope, AuthorizationScope.USERINFO);
string url = string.Format("https://open.weixin.qq.com/connect/{0}?", scope.Equals(AuthorizationScope.PCLOGIN) ? "qrconnect" : "oauth2/authorize");
if (General.IsNullable(redirectUri))
{
Uri uri = HttpContext.Current.Request.Url;
redirectUri = string.Format("{0}://{1}{2}", uri.Scheme, uri.Authority, uri.AbsolutePath);
}
WxParameters paras = new WxParameters();
paras.SetValue("appid", appId);
paras.SetValue("redirect_uri", HttpUtility.UrlEncode(redirectUri, Encoding.UTF8));
paras.SetValue("response_type", "code");
paras.SetValue("scope", scope);
paras.SetValue("state", General.ToNullable(state, General.UniqueString()) + "#wechat_redirect");
url += paras.ToQueryString();
response.Redirect(url);
}
}
