CODEWITHSUNDEEP
javascriptnode.jsexpress
Sylvia
Sylvia

Reputation: 277

Node.js - TypeError: Cannot read property 'handle' of undefined

I have some Node.js code that gives this error

Could anybody tell me what does this error mean and how do I do to solve it?

Thank you very much!

if (fn.handle && fn.set) app = fn;
        ^

TypeError: Cannot read property 'handle' of undefined

at Function.app.use (/Users/sylvia/Documents/FE/Daily-

Learning/Node/final/node_modules/express/lib/application.js:110:9)

at Object.<anonymous> (/Users/sylvia/Documents/FE/Daily- Learning/Node/final/server.js:46:8)

at Module._compile (module.js:409:26)

at Object.Module._extensions..js (module.js:416:10)

at Module.load (module.js:343:32)

at Function.Module._load (module.js:300:12)

at Function.Module.runMain (module.js:441:10)

at startup (node.js:140:18)

at node.js:1043:3

Code:

var express = require('express');
var expressStatic = require('express-static');
var mysql = require('mysql');
var cookieParser = require('cookie-parser');
var cookieSession = require('cookie-session');
var bodyParser = require('body-parser');
var consolidate = require('consolidate');
var expressRoute = require('express-route');
var multer = require('multer');
var multerObj = multer({dest:'./static/upload'});

var server = express();
server.listen(8080);

server.use(multerObj.any());
server.use(cookieParser());

(function(){
    var keys=[];

    for(var i=0;i<100000;i++){
        keys[i]='a_' + Math.random();
    }

    server.use(cookieSession({
        name: 'sess_id',
        keys: keys,
        maxAge: 20*60*1000 //20mins
    }));
})();

server.engine('html',consolidate.ejs);

server.set('views','template');
server.set('view engine','html');

var r1 = express.Router();
var r2 = express.Router();

server.use('/article/',r1);

r1.get('/1.html',(req,res)=>{
    res.send('aaa').end();
});

r1.get('/2.html',(req,res)=>{
    res.send('bbb').end();
});

server.use('/blog/',r2);

r2.get('/a.html',(req,res)=>{
    res.send('ccc').end();
});

r2.get('/b.html',(req,res)=>{
    res.send('ddd').end();
});


server.use(expressStatic('./static/'));

Upvotes: 1

Views: 1566

Answers (1)

Andrzej Smyk
Andrzej Smyk

Reputation: 1724

The problem lies in old version of express.js. The error is thrown on line

server.use('/article/',r1);

because r1 is undefined. You need to upgrade your express version to 4.x.x since routers are not available in 3.x.x version. You can do that with this command:

npm install [email protected] --save

Upvotes: 1

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