I'm trying to send formatted json with express.
Here is my code:
var app = express();
app.get('/', function (req, res) {
users.find({}).toArray(function(err, results){
// I have try both
res.send(JSON.stringify(results, null, 4));
// OR
res.json(results);
});
});
I get the json in my browser but it's a string. How can I send it so it's readable in the browser?
try to set the "secret" property json spaces on the Node app.
app.set('json spaces', 2)
This statement above will produce indentation on json content.
app.use(express.json()) it's much cleaner in code to have res.json() instead of res.send(JSON.stringify(), null, 4)
You're going to have to set the Content-Type to application/json like this
app.get('/', function (req, res) {
users.find({}).toArray(function(err, results){
res.header("Content-Type",'application/json');
res.send(JSON.stringify(results, null, 4));
});
});
Use type('json') to set Content-Type and JSON.stringify() for formatting:
var app = express();
app.get('/', (req, res) => {
users.find({}).toArray((err, results) => {
res.type('json').send(JSON.stringify(results, null, 2) + '\n');
});
});
This should solve your problem
var app = express();
app.set('json spaces', 4)
app.get('/', function (req, res) {
users.find({}).toArray(function(err, results){
res.json(JSON.parse(results));
});
});
Sending JSON output as formatted from the server could be undesirable considering resource usage and performance of the server. Especially in production environments.
Instead, you can find a few ways to format the JSON output at client-side.
If you are using Chrome, you can use an extension among JSON Formatter, JSON Viewer, JSONView or others from Chrome web store.
Firefox provides built-in JSON viewer since Firefox 44.
When using curl or wget in a command line or a shell script, you can pipe the result in JSON into jq.
$ curl http://www.warehouse.com/products | jq .
For convenience, you can override res.json in a custom middleware that runs before your routes.
To auto-format all JSON responses:
app.use('*', (req, res, next) => {
res.json = (data) => res.type('json').send(JSON.stringify(data, null, 4))
next()
})
app.get('/route', (req, res) => res.json({ formatted: true })
To allow custom formatting based on individual routes or other logic:
app.use('*', (req, res, next) => {
res.json = (...args) => res.type('json').send(JSON.stringify(...args))
next()
})
app.get('/tabs', (req, res) => res.json({ formatted: 'tabs' }, null, '\t')
app.get('/spaces', (req, res) => res.json({ formatted: 'spaces' }, null, 4)
app.get('/minified', (req, res) => res.json({ formatted: false })
Maybe you need to JSON.parse(resp)
