如何从路由功能外部获取Nodejs响应对象？

Question

I am using Nodejs as a back-end. I am facing a problem with getting a response object from the outside of the router function. In first routing function i can do to console the response object but in second routing function i can not able to get the values in to console.

I declare the variable in first. In first routing function i have send the response values in to variable but can't able to get the values in another routing function.

let userNames;

router.get('/getUsers', function (req, res) {
    const users = [
    {name: 'Mark'},
    {name: 'Rafallo'},
    {name: 'Samir'},
    ]
    this.userNames = users; // will be response json
    console.log('userValues', this.userNames); // able to get the json in to console
    res.send(users);
})

router.get('/demoUser', function (req, res) {
    console.log('userValues', this.userNames); // unable to get the json in to console
})

How to get values from one's routing function in to another routing function. Thanks.

Answer 1

To access a variable use the variable name ( userNames ). It isn't a property of any object, so don't use this .

Generally, you don't want to do this though. You'll get race conditions between requests from multiple users and leak information to the wrong people.

Use a session instead.

Express has middleware for this purpose