IHttpHandler执行1次,代码执行2次

by_封爱 2018-10-30 03:48:54

微信授权的代码简单说明一下.

OAuth.ashx



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);

看起来也没问题...而且这代码也运行几年了.. 授权都正常第一次不带code 跑到微信拿授权回来有code 然后拿用户信息.

而且我确定Redirect之后的代码不会在执行..

最近要加一个日志处理下接口耗时.. 于是我写了一个IHttpModule 代码大概如下.



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;

            }

        }

这代码加上并且在webserver节点配置之后居然影响了上面授权代码...

从insert 的日志来看代码执行了2次第一次没code 第二次有code 是正常情况.

但是从log(url)来看.. 同样的url 输出了2次..

2018-10-30 14:31:45:3108:https://open.weixin.qq.com/connect/oauth2/authorize...

2018-10-30 14:31:45:6546:https://open.weixin.qq.com/connect/oauth2/authorize...

这个是我之前截取的.. 因为这个code有一次有效所以他又请求了腾讯接口一次第一次就失效了..

然后我就获取不到openid了...

一旦进行使用"过滤器". 那么这代码就失效..

如果注视掉的话.. 就没问题....

所以问题在哪呢?

----------------------------------------------分割线2018年10月30日 17:52:32------------------------------------

经过我几次的测试.我发现了..在end_request方法里面..

如果啥都不写.. 正常

然后我一行一行测试..

发现居然是执行sql的那句话有问题..

只要执行insert语句. 那么就会执行2次上面的代码..

如果//. 就是正常的.

敢问. 我执行sql 跟他们有关系吗?



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

        {

            using (var Conn = DbHelperMySQL.GetCon())

            {

                return Conn.Execute(sql, paramObj);

            }

        }

就用了dapper 没别的东西为什么会影响呢?

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