How to make login interceptor by node.js

This article mainly introduces the relevant knowledge of "how to make login interceptor in node.js". The editor shows you the operation process through an actual case. The operation method is simple, fast and practical. I hope this article "how to make login interceptor in node.js" can help you solve the problem.

Interceptors can be seen everywhere in web development, such as the management background of the site, not everyone can enter, so you need to make an interceptor and friendly jump to the prompt page.

Let's simply implement a way to determine whether the user logged in successfully or not, and the unsuccessful user is automatically redirected 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 three parameters, the first is the url path of the request, and the second is the filter. If the filter is satisfied, the next step is to enter the route processing function, and if it is not satisfied, it will not go to the later route definition function.

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