Show post Data in express

express body

app.use (function(req, res, next) {
    var data='';
    req.setEncoding('utf8');
    req.on('data', function(chunk) { 
       data += chunk;
    });

    req.on('end', function() {
        console.log(data);
        jsonData = JSON.parse(data);
        console.log(jsonData);
        req.body = jsonData;
        next();
    });
});

app.use(app.router);