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Here's how I'm sending a request from Flutter front end to a Flask Backend API. I'm sending a URL to backend to process it.

    final url = 'http://<URL>';
    final uri = Uri.parse(url);
    final headers = {'Content-Type': 'application/json'};
    var body = {'url': urlToSendToBackend}
    
    var jsonBody = json.encode(body);
    final encoding = Encoding.getByName('utf-8');

    final response = await http.post(uri,headers: headers, body: jsonBody,encoding: encoding);

Here's how I'm trying to parse it in flask

request_data = request.get_json()
url = request_data.get('url')
summary = summarizeFromURL(url)

response_body = {'summary':summary,'fromContent':True,'fromUrl':False}
resp = make_response(response_body) 

resp.headers['Access-Control-Allow-Origin'] = '*'
resp.headers['Access-Control-Allow-Headers'] = "Origin,Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token,locale"
resp.headers["Access-Control-Allow-Methods"] = "POST, OPTIONS"
resp.headers["Access-Control-Allow-Credentials"] = True

return resp;

The request reaches the server. But I get this error on the server:

url = request_data.get('url')
AttributeError: 'NoneType' object has no attribute 'get'
Somal Chakraborty
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  • Does this answer your question? [Flask request.get\_json() returning None when valid json data sent via post request](https://stackoverflow.com/questions/49010415/flask-request-get-json-returning-none-when-valid-json-data-sent-via-post-reque) – Aaron_ab Dec 04 '21 at 05:28

0 Answers0