var code=request["code"]??"";

var openid="";

if code==""

{

     //没授权 生成url 跳转到微信 回调.

     var url="open.weix.......?redirect_uri=OAuth.ashx";

     log(url);

     Response.Redirect(url);

}

else

{

    //已经授权 根据code token拿用户信息.

    var user="api/userinfo/token=....code=....";

   openid=user.openid;

 }

 var url="list.aspx?uid="+openid;

 Response.Redirect(url);

context.BeginRequest += context_BeginRequest;

context.EndRequest += context_EndRequest;



void context_BeginRequest(object sender, EventArgs e)

        {

            var application = sender as HttpApplication;

            var context = application.Context;

            var request = context.Request;

            var response = context.Response;

            var fidder = new string[2] { "ashx", "aspx" };

            var path = request.Path.ToLower().Split('.')[1];

            if (fidder.Contains(path))

            {

                var stopwatch = new Stopwatch();

                stopwatch.Start();

                context.Items[KEY] = stopwatch;

            }    

        }

        void context_EndRequest(object sender, EventArgs e)

        {

            var application = sender as HttpApplication;

            var context = application.Context;

            var request = context.Request;

            var response = context.Response;

            var stopwatch = context.Items[KEY] as Stopwatch;

            if (stopwatch != null)

            {

                stopwatch.Stop();

                var time = stopwatch.ElapsedMilliseconds;

                var txt = new StringBuilder();

                txt.Append(request.Url.Host);

                txt.Append(request.Url.Port.ToString()));

                txt.Append(request.Url.AbsolutePath);

                txt.Append(request.Url.Query);





                var url = txt.ToString();

                var md = request["method"] ?? "-1";

                var ip = request.ServerVariables["HTTP_X_FORWARDED_FOR"] ?? "";

                if (ip == "")

                {

                    ip = request.ServerVariables["REMOTE_ADDR"] ?? "";

                }

                var sql = "insert.........";

                DapperHelper.Execute(sql, new

                {

                    reqtime = DateTime.Now,

                    reqIP = ip,

                    url,

                    method = md,

                    totalTime = time

                });



                context.Items[KEY] = null;

            }

        }

public static int Execute(string sql, object paramObj = null)

        {

            using (var Conn = DbHelperMySQL.GetCon())

            {

                return Conn.Execute(sql, paramObj);

            }

        }