python全局变量在apach中不工作

Question

我正面临全局变量的问题，当我在django开发服务器上运行时，它可以正常工作，但在apache中却不能工作

代码如下：

red= "/project3/test/"


def showAddRecipe(request):
    #global objc
    if "userid" in request.session:
        objc["ErrorMsgURL"]= ""
        try:
            urlList= request.POST
            URL= str(urlList['url'])
            URL= URL.strip('http://')
            URL= "http://" + URL

            recipe= __addRecipeUrl__(URL)

            if (recipe == 'FailToOpenURL') or (recipe == 'Invalid-website-URL'):
                #request.session["ErrorMsgURL"]= "Kindly check URL, Please enter a valid URL"
                objc["ErrorMsgURL"]= "Kindly check URL, Please enter a valid URL"
                print "here global_context =", objc
                arurl= HttpResponseRedirect("/project3/add/import/")
                arurl['ErrorMsgURL']= objc["ErrorMsgURL"]
                #return HttpResponseRedirect("/project3/add/import/")
                #return render_to_response('addRecipeUrl.html', objc, context_instance = RequestContext(request))
                return (arurl)
            else:
                objc["recipe"] = recipe
                return render_to_response('addRecipe.html',
                    objc,
                    context_instance = RequestContext(request))
        except:
            objc["recipe"] = ""
            return render_to_response('addRecipe.html',
                objc,
                context_instance = RequestContext(request))
    else:
        global red
        red= "/project3/add/"
        return HttpResponseRedirect("/project3/login")



def showAddRecipeUrl(request):
    if "userid" in request.session:
        return render_to_response('addRecipeUrl.html',
            objc, 
            context_instance = RequestContext(request))
    else:
        global red
        red= "/project3/add/import/"
        return HttpResponseRedirect("/project3/login")


def showLogin(request):
    obj = {}
    obj["error_message"] = ""
    obj["registered"] = ""

    if request.method == "POST":
        if (red == "/project3/test"):
            next= '/project3/recipes'
        else:
            next= red

        try:
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(username=username, password=password)
        except:
            user = authenticate(request=request)

        if user is not None:
            if user.is_active:
                login(request, user)
                request.session["userid"] = user.id

                # Redirect to a success page.
                return HttpResponseRedirect(next)

此代码在django开发服务器中运行良好，但在apache中，url被重定向到“/project3/recipes”

Answer 1

我想您应该使用Apache的CGI功能。这意味着，对于每个请求，脚本都会重新启动。这意味着全局变量在每次调用时初始化。在

除此之外，使用全局变量来存储本质上是会话数据（每个用户有一个会话，因此是状态）并不是一个好主意。全局参数对于所有用户都是相同的，会话是针对每个用户的，这是您（应该）想要的。在

在您的情况下，会话的数据可能应该存储在某个数据库中，因为python解释器将在脚本完成并呈现单个页面时结束。在

Answer 2

正如您之前所说，在多进程环境（如活动的Apache站点）中，使用全局对象是一种灾难。您将有多个用户都访问彼此的变量，这将永远无法按您的要求工作。在

extraneon是正确的，你应该为此使用会话-这就是它们的用途。从你的评论到他的回答，很明显你没有读过sessions documentation-你现在应该读了。在

Answer 3

嘿，伙计们，谢谢你的帮助，是的，我知道使用全局变量是不正确的方法，但我没能让它工作，但现在它起作用了，下面是代码：

def showAddRecipe(request):
    #global objc
    if "userid" in request.session:
        objc["ErrorMsgURL"]= ""
        try:
            urlList= request.POST
            URL= str(urlList['url'])
            URL= URL.strip('http://')
            URL= "http://" + URL

            recipe= __addRecipeUrl__(URL)

            if (recipe == 'FailToOpenURL') or (recipe == 'Invalid-website-URL'):
                #request.session["ErrorMsgURL"]= "Kindly check URL, Please enter a valid URL"
                objc["ErrorMsgURL"]= "Kindly check URL, Please enter a valid URL"
                print "here global_context =", objc
                arurl= HttpResponseRedirect("/project3/add/import/")
                arurl['ErrorMsgURL']= objc["ErrorMsgURL"]
                #return HttpResponseRedirect("/project3/add/import/")
                #return render_to_response('addRecipeUrl.html', objc, context_instance = RequestContext(request))
                return (arurl)
            else:
                objc["recipe"] = recipe
                return render_to_response('addRecipe.html',
                    objc,
                    context_instance = RequestContext(request))
        except:
            objc["recipe"] = ""
            return render_to_response('addRecipe.html',
                objc,
                context_instance = RequestContext(request))
    else:
        request.session['red']= "/project3/add"
        return HttpResponseRedirect("/project3/login")



def showAddRecipeUrl(request):
    if "userid" in request.session:
        return render_to_response('addRecipeUrl.html',
            objc, 
            context_instance = RequestContext(request))
    else:
        request.session['red']= "/project3/add/import"
        return HttpResponseRedirect("/project3/login")


def showLogin(request):
    obj = {}
    obj["error_message"] = ""
    obj["registered"] = ""

    if request.method == "POST":
        if ('red' not in request.session) or (not request.session["red"]):
            print "in if "
            next= '/project3/recipes/'
        else:
            print "in else"
            next= request.session["red"]

        try:
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(username=username, password=password)
        except:
            user = authenticate(request=request)

        if user is not None:
            if user.is_active:
                login(request, user)
                request.session["userid"] = user.id

                # Redirect to a success page.
                return HttpResponseRedirect(next)