如何在EnableSessionState ="False"的请求上获取SessionID [英] How to get SessionID on a request where EnableSessionState="False"

问题描述

我希望能够通过 WebMethod 函数(其中 EnableSession = false )获得当前已认证会话的 SessionID .

I want to be able to get the SessionID of the currently authenticated session in a WebMethod function where EnableSession = false.

我无法对此请求设置 EnableSession = true ，因为另一个页面上的另一个(长时间运行的)请求将 SessionState 保持锁定状态(EnableSessionState =="True"不是只读").

I cannot set EnableSession=true on this request, because another (long running) request on a different page is keeping the SessionState locked (EnableSessionState == "True" not "Readonly").

是否存在一致的方法来从 ASP.NET会话cookie 或 Url 获取无cookie会话的 SessionID ?我可以自己编写代码，但我希望使用已经记录和测试过的功能.

Is there a consistent way of getting the SessionID from either the ASP.NET Session cookie or the Url for cookieless sessions? I can code it myself but I would rather use a function that is already documented and tested.

非常感谢您，
弗洛林.

Thank you very much,
Florin.

推荐答案

似乎没有ASP.NET函数可以做到这一点，所以我自己编写了一个hack，目前可以正常使用；):

There seems to be no ASP.NET function that can do this, so I made up a hack of my own, which works... for now ;):

private string GetSessionID(HttpContext context)
{
  var cookieless = context.Request.Params["HTTP_ASPFILTERSESSIONID"];
  if (!string.IsNullOrEmpty(cookieless))
  {
    int start = cookieless.LastIndexOf("(");
    int finish = cookieless.IndexOf(")");
    if (start != -1 && finish != -1)
      return cookieless.Substring(start + 1, finish - start - 1);
  }
  var cookie = context.Request.Cookies["ASP.NET_SessionId"];
  if (cookie != null)
    return cookie.Value;
  return null;
}

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