Graphql: Must provide query string

Question

I have a simple express graphql server:

const schema = require('./schema');
const express = require('express');
const graphqlHTTP = require('express-graphql');
const cors = require('cors')
const bodyParser = require('body-parser');


const app = express();
app.use(cors());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());

app.use('/graphql', graphqlHTTP(req => {
  return ({
  schema,
  pretty: true,
  })
}));

const server = app.listen(9000, err => {
  if (err) { return err; }
  console.log(`GraphQL server running on http://localhost:${9000}/graphql`);
});

And my request looks like:

Any help?

(Please don't close it as duplicate because the other post does not provide enough info on how the user solved it)

@ChrisG it would have throw Syntax error, if it didnt understand the syntax. — Avraam Mavridis, Aug 06 '17 at 09:40
@ChrisG In ES6 `{ schema }` is equivalent to `{ schema: schema }`. It's syntactic sugar! Good eye, though: this looks like a bug. — Ziggy, Oct 10 '17 at 03:51

score 4 · Accepted Answer · answered Aug 06 '17 at 13:57

4

You need to specify application/json in your Content-Type header -- you currently have text/plain. You've included the body parser middleware on the server, but it relies on that header in your request to know when it needs to actually parse the response into JSON.

answered Aug 06 '17 at 13:57

Daniel Rearden

80,636
11
185
183

and exactly how do you do this? – guerrillacodester Feb 17 '22 at 17:49

Graphql: Must provide query string

1 Answers1