CODEWITHSUNDEEP
node.jsparametersgetexpress
hh54188
hh54188

Reputation: 15636

The node express's bodyParser can't get the parameter in the GET request

I ajax an GET request in client side:

$.ajax({
        url: '/update',             
        type: 'get',    
        data: {
            "key": key,
            "value": value
        },
        success: function (data, err) {

        }
    })

then at the node side, I want get the parameter

var showParam = function (req, res) {
    if (req.body) {
        for (var key in req.body) {
            console.log(key + ": " + req.body[key]);
        }       
        res.send({status:'ok',message:'data received'});
    } else {
        console.log("nothing received");
        res.send({status:'nok',message:'no Tweet received'});
    }   
}
app.get('/update', function(req, res){
    showParam(req, res);
})

The shell show the body is empty and undefined.

But when I change the get to post (both at the client side and server side), everything is ok, I can get the parameter correctly.

What's problem with my code? Do I miss something?

Upvotes: 6

Views: 7290

Answers (3)

sam100rav
sam100rav

Reputation: 3783

You can access your data for get request in server-side by using req.query.key and req.query.value.

Upvotes: 2

Dominic Barnes
Dominic Barnes

Reputation: 28439

If you are issuing a GET request, the URL parameters are not part of the body, and thus will not be parsed by the bodyParser middleware.

To access the query parameters, just reference req.query

Upvotes: 11

uadnal
uadnal

Reputation: 11445

In order to get params from bodyParser you must use POST not GET. Your ajax request and server calls must both use POST.

http://expressjs.com/api.html#req.body

app.post('/update', function(req, res){
    showParam(req, res);
});

$.ajax({
        url: '/update',             
        type: 'POST',    
        data: {
            "key": key,
            "value": value
        },
        success: function (data, err) {

        }
    });

To get the GET params, use the url module and use query = url.parse(req.url, true).query. query will contain an object with the values accessible via query.foo

Upvotes: 1

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