<Antwort [200]> ist nicht JSON serialisierbar

Question

nach dem Beispiel der Dokumentkonvertierungs-API, die versucht, Flask zu verwenden, um msword Dokument in Text zu konvertieren, aber es funktioniert nicht.

Hier ist der Code

import os, json, requests 

from flask import Flask, jsonify 

from watson_developer_cloud import DocumentConversionV1 

app = Flask(__name__) #create flask instance 

@app.route('/') 

def Welcome(): 

    v = json.loads(os.getenv('VCAP_SERVICES')) 
    svcName = 'document_conversion' 
    svc = v[svcName][0]['credentials'] 
    url = svc['url'] 
    user = svc['username'] 
    password = svc['password'] 
    document_conversion = DocumentConversionV1(username=user, password=password,version='2015-12-15') 
    # Example of retrieving html or plain text 
    with open('./doc.docx', 'rb') as document: 
     config = {'conversion_target': DocumentConversionV1.NORMALIZED_TEXT}  
     print(json.dumps(document_conversion.convert_document(document=document, config=config),indent=2)) 

if __name__ == "__main__": 

    port = os.getenv('VCAP_APP_PORT', '5000') 
    app.run(host='0.0.0.0', port=int(port),debug=True) 

Hier ist das Laufzeitprotokoll

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1836, in __call__ 

return self.wsgi_app(environ, start_response) 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1820, in wsgi_app 

response = self.make_response(self.handle_exception(e)) 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1403, in handle_exception 

reraise(exc_type, exc_value, tb) 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise 

raise value 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1817, in wsgi_app 

response = self.full_dispatch_request() 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1477, in full_dispatch_request 

rv = self.handle_user_exception(e) 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1381, in handle_user_exception 

reraise(exc_type, exc_value, tb) 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise 

raise value 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1475, in full_dispatch_request 

rv = self.dispatch_request() 

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1461, in dispatch_request 

return self.view_functions[rule.endpoint](**req.view_args) 

File "/home/vcap/app/welcome.py", line 39, in Welcome 

     password = svc['password'] 

     document_conversion = DocumentConversionV1(username=user, password=password,version='2015-12-15') 

     # Example of retrieving html or plain text 

     with open('./doc.docx', 'rb') as document: 

       config = {'conversion_target': DocumentConversionV1.NORMALIZED_TEXT} 

       print(json.dumps(document_conversion.convert_document(document=document, config=config),indent=2)) 







if __name__ == "__main__": 

     port = os.getenv('VCAP_APP_PORT', '5000') 

File "/home/vcap/app/.heroku/python/lib/python3.5/json/__init__.py", line 237, in dumps 

**kw).encode(obj) 

File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 201, in encode 

chunks = list(chunks) 

File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 436, in _iterencode 

o = _default(o) 

File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 180, in default 

raise TypeError(repr(o) + " is not JSON serializable") 

Answer 1

Die Dokumentation veraltet zu sein scheint. Das zurückgegebene Objekt ist ein Response-Objekt, wie in der Requests-Bibliothek zu sehen ist. Meiner Erfahrung nach können Sie einfach .text verwenden, um eine Zeichenfolge zu erhalten, die den JSON darstellt. Ich würde sagen, Sie müssen möglicherweise die .json-Darstellung verwenden, um etwas zu erhalten, das Sie .dumps() aufrufen können.