How to Intercept Request and Response object in Express js | Nodejs Tutorial
In this video you are going to learn how to intercept request and response object in express js using a single middleware function and log each request and response into a file
middleware code
---------------------------
app.use(function(req, res, next) {
logger.info(req.body);
let oldSend = res.send;
res.send = function (data) {
logger.info(JSON.parse(data));
oldSend.apply(res, arguments);
}
next();
})
apply the above middleware function before calling any route.
I use winston logger to log request and response object into a file
must watch my previous video on how to log using winston
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