当请求主体 json 太重时，ExpressJS CORS 错误

Question

I have an expressJS server receiving API requests from a React APP front-end.

Anytime I push a request with an image less than 200Kb; it goes through as expected. But when the image parameter is exceeding 200Kb I get a CORS error.

CORS error if file exceed 200Kb

My setup for CORS and bodyParser size params:

app.use(bodyParser.json({limit: "50mb"}));
app.use(bodyParser.urlencoded({limit: "50mb", extended: true, parameterLimit:50000}));
app.use(cors());

I'm stuck on this. Any help would be much appreciated;)

Answer 1

I just change from

app.use(bodyParser.json({limit: "50mb"}));

to

app.use(express.json({limit: "50mb"}));

I'm not sure what's the big difference here; but that solved my issue. Still it's really annoying that the size limit results into CORS error. Not really friendly to debug:/