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node.jshttpheader

Nodejs how to set content-type header for every request

I would like to know how I can set the header "Content-Type": "application/json" for every nodejs express request that comes in.

I tried both of these lines but my calls are still failing if I don't add the header myself:

app.use(function(req, res, next) {
    req.header("Content-Type", "application/json");
    res.header("Content-Type", "application/json");
    next();
});

All of my requests are json, so I don't want the front end (Anguler) to send me this header every time if I can just set it myself from the server side.

Solution

  • Response object has to use .setHeader instead of .header:

    app.use(function(req, res, next) {
    res.setHeader("Content-Type", "application/json");
    next();
});

    doc.