django 管理session

def main(req):
          username = req.session.get('username',None)
          try :
           print req.session['username']
           print req.session.session_key
           print '----------------'
          except:
           try:
             req.session['username']
             return render_to_response('main.html')
           except:
             try:
                 a=req.POST['username']
                 if (check_user(req.POST['username'],req.POST['password'])== 1):
                    req.session['username']=req.POST['username']
                    print req.encoding
                    return render_to_response('main.html')
                 else:
                  response = "用户名或密码错误"
                  return HttpResponse(response)
                  #return redirect('/index/')
             except:
               return redirect('/index/')

def index(req):
       try:
         req.session['username']
         print req.session.session_key
         return render_to_response('main.html')
       except:
         return render_to_response('index.html')

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admin
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55izb73ub6swrjfjykjsk03l6acgd8y2
[11/Jul/2018 19:54:21] "GET /index/ HTTP/1.1" 200 22920
[11/Jul/2018 19:54:21] "GET /static/news/Css/Main/main.css HTTP/1.1" 304 0
[11/Jul/2018 19:54:21] "GET /static/news/Css/Public/header.css HTTP/1.1" 304 0
[11/Jul/2018 19:54:21] "GET /static/news/Css/Public/menu.css HTTP/1.1" 304 0
[11/Jul/2018 19:54:21] "GET /static/Public/Js/jquery-2.2.2.min.js HTTP/1.1" 404 1704
[11/Jul/2018 19:54:21] "GET /static/Public/Js/Public/menu.js HTTP/1.1" 404 1689
[11/Jul/2018 19:54:21] "GET /static/Public/Js/Main/main.js HTTP/1.1" 404 1683
[11/Jul/2018 19:54:21] "GET /static/Public/Js/Public/menu.js HTTP/1.1" 404 1689
[11/Jul/2018 19:54:22] "GET /static/news/Images/7.png HTTP/1.1" 404 1668
[11/Jul/2018 19:54:22] "GET /static/news/Images/8.png HTTP/1.1" 404 1668
[11/Jul/2018 19:54:22] "GET /static/news/1.png HTTP/1.1" 304 0
[11/Jul/2018 19:54:22] "GET /static/news/Images/search.png HTTP/1.1" 404 1683
[11/Jul/2018 19:54:22] "GET /static/news/Images/9.png HTTP/1.1" 404 1668
[11/Jul/2018 19:54:22] "GET /static/news/icon.png HTTP/1.1" 304 0
[11/Jul/2018 19:54:22] "GET /static/news/2.png HTTP/1.1" 304 0
[11/Jul/2018 19:54:22] "GET /static/news/3.png HTTP/1.1" 304 0
[11/Jul/2018 19:54:22] "GET /static/news/5.png HTTP/1.1" 304 0
[11/Jul/2018 19:54:22] "GET /static/news/4.png HTTP/1.1" 304 0