To handle JSON content in the body of a POST request using Express, you can set it up like this:
router.post('/', express.json(), function (req, res, next){
console.log(req.body);
// utilize req.body and send a response here
});
Alternatively, you can configure express.json() at a higher level to apply to all routes on the router or even on the app object for all routers:
router.use(express.json());
router.post('/', function (req, res, next){
console.log(req.body);
// utilize req.body and send a response here
});
The express.json() middleware specifically looks for JSON content-type, reads the post body from the incoming stream, parses the JSON data, and assigns the resulting object to req.body. Any fields sent by the client in the JSON will be accessible through req.body.
By default, Express does not automatically read the body of a POST request; middleware modules like express.json(), express.text(), or
express.urlencoded()</code are needed to parse different content types.</p>
<p>If you need the raw, unparsed body (not necessary if dealing with JSON), you can use <code>express.raw()
as middleware, which stores the raw data as a Buffer in
req.body. However, it is recommended to use this selectively as generic usage may interfere with other middleware functions.
Yes, but ReqBody simply represents the parsed JSON and not the raw JSON data itself. Is there a way to access the raw JSON?
It seems there might be confusion regarding the use of req.body when handling JSON data with express.json(). The properties present in req.body directly correspond to the properties included in the incoming JSON. Using express.json() negates the need to manually parse the JSON data.
If required, you could use express.raw() to access the raw JSON data as a Buffer (which would then need manual parsing). However, this step is redundant since express.json() performs the parsing automatically.
Note that no reference to a class named ReqBody exists in either nodejs or Express source code. It appears to be a shorthand term used to refer to the req.body object rather than an actual class implementation.