Question

所以我有一个名为＆＃34;登录＆＃34;的网站的事件处理程序：

 function _GetLoginEventHandler(req, res) {
    var answer = _getHTMLSkeleton();

    var dynamicAnswer;
    if (isLogedIn == false) {
         dynamicAnswer = "<h1>Login</h1>" + //creates a form for not logged users
            "<form action='/login' method='post'>" +
            "User name: <br>" +
            '<input type="text" name="username" value="MickeyMouse">' +
            "<br>" +
            "Password: <br>" +
            '<input type="password" name="password" value="geheim">' +
            "<br><br>" +
            '<input type="submit" value="Submit">' +
            "</form> ";
         answer = answer.replace('{title}', "Login");
         answer = answer.replace("{body}", dynamicAnswer);
         res.write(answer);
         res.end();
    }
    else {
        res.writeHead(302, {  //if the user is loged it, it redirects to his "profile"
            'Location': '/user'
        });
        res.end();
    }     
};

如果用户已登录，则会将其重定向到名为＆＃34; user＆＃34;在我的情况下，他的个人资料：

 function _GetUserEventHandler(req, res) {
    var answer = _getHTMLSkeleton();

    var dynamicAnswer;
    if (isLogedIn == true) {
        dynamicAnswer = "<h1>Logg Off</h1>" +
            "<p>Your user id is: " + uID + "</p>" +
            "<form action='/user' method='post'>" +
            '<input type="submit" value="Submit">' + "</form>";
    }
    else
        dynamicAnswer = "<h4>You are not allowed to see this content, you are not loged in </h4>";

    answer = answer.replace('{title}', "User");
    answer = answer.replace("{body}", dynamicAnswer);
    res.write(answer);
    res.end();
}

我想检查主页是否从（在这种情况下）登录页面重定向，以便我可以添加到＆＃34;回答＆＃34;例如＆＃34;您已成功登录＆＃34;。 PS：_getHTMLSkeleton返回带有占位符的HTML页面的结构

Answer 1

您可以检查申请中的引荐来源标头是否为您的登录表单：

req.headers.referer

如果您的应用设置了引荐来源值（请检查原点。

或尝试设置标题：

res.setHeader('fromLoginPage', 'true');

在重定向用户之前，稍后再检查：

req.headers.fromLoginPage == true

如果重定向站点，请更改站点的默认内容

1 个答案: