node. JS implements a simple login blocker

Interceptors are ubiquitous in web development, such as the site's management background, not everyone can enter, so you need to do an interceptor and friendly jump to the tip page.

Below we simply implement a, to determine whether the user is logged on successfully, the login is not successful users automatically redirect to the login page.

First we implement a filter

Exports.checkauth=function (Req, res, next)  {    var token =  req.signedcookies.token;    if  (token && req.session.user  && req.session.user.token === token)          Next ();    else if  (token)  {         //if invalid token or no session, should rebuild         var authinfo = user.getauthinfo (token);         if  (Authinfo && authinfo.isauth)  {             req.session.user = {                 userID: authInfo.userID,                 username: authinfo.username,                 isAuth: authInfo.isAuth,                 token: token             }             next ();        } else             res.redirect ('/user/login ');     } else        res.redirect ('/user/login ');}

Then define the route and add the filter

Module.exports = function (APP) {app.get ('/user/bloglist ', Pageadmin.checkauth, pageadmin.pagelist); App.all ('/user/post ', Pageadmin.checkauth, pageadmin.pagepost);}

The above route definition receives 3 parameters, the first one is the URL path of the request, the second is the filter, and if the filter is satisfied the next step into the route handler function, if not satisfied will not go to the back of the route definition function.

node. JS implements a simple login blocker