Axios, POST request to Flask -


i try make post flask server using axios:

var config = { headers: {                         'content-type': 'application/json',                       'access-control-allow-origin': '*'}              }  axios.post("http://127.0.0.1:5000/test",               { label : "test" , text : "test"}  , config           )           .then(function (response) {             console.log(response);           })           .catch(function (error) {             console.log(error);           });

now part of flask

... data = request.get_json(silent=true) item = {'label': data.get('label'), 'text': data.get('text')} print item ...

however, ll end following error:

xmlhttprequest cannot load http://127.0.0.1:5000/test. response preflight request doesn't pass access control check: no 'access-control-allow-origin' header present on requested resource. origin 'http://localhost:3000' therefore not allowed access.

why? ll set header suggested.

here solution

from flask_cors import cors, cross_origin app = flask(__name__) cors = cors(app, resources={r"/yourapp/*": {"origins": "*"}})

you need add cors support flask app. see related threat here: flask-cors not working post, working get. popular cors extension flask can found here: https://flask-cors.readthedocs.io/en/latest/.


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