CODEWITHSUNDEEP
pythonjsonflask
user3089927
user3089927

Reputation: 3905

getting json response using requests object flask

webservice

@app.route('/get-details')
def getDetails():    
   cur.execute("select * from employee")
   rows = cur.fetchall()
   columns = [desc[0] for desc in cur.description]
   result = []
   for row in rows:
           row = dict(zip(columns, row))
           #json_row=json.dumps(row)
           result.append(row)

   json_response=json.dumps(result)
   response=Response(json_response,content_type='application/json; charset=utf-8')
   response.headers.add('content-length',len(json_response))
   response.status_code=200
   return response

webserver

@app.route('/get-details')
def getDetails():
      r=requests.get('http://localhost:8084/get-details')
      return r.json() #error in this line, however r.text is rendering the result but in html

Error

Error on request:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/serving.py", line 177, in run_wsgi
    execute(self.server.app)
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/serving.py", line 165, in execute
    application_iter = app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1478, in full_dispatch_request
    response = self.make_response(rv)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1577, in make_response
    rv = self.response_class.force_type(rv, request.environ)
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/wrappers.py", line 827, in force_type
    response = BaseResponse(*_run_wsgi_app(response, environ))
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/wrappers.py", line 57, in _run_wsgi_app
    return _run_wsgi_app(*args)
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/test.py", line 855, in run_wsgi_app
    app_iter = app(environ, start_response)
TypeError: 'list' object is not callable

How to handle the response returned from the webservice and treat it like json?

r.text returns ["{\"username\" : \"abhi\", \"pass\" : 2087}"] which is a String object I dont know how r.json will format the result but I want something like :

[{"username" : "abhi", "pass" : 2087}] which I can do using this but I need to have a List not a String to do this.

Upvotes: 2

Views: 14268

Answers (1)

Dragu
Dragu

Reputation: 3297

First, use .json() instead of .json.

Then, I think you double json encode your datas.

Try to do that:

for row in rows:
       row = dict(zip(columns, row))
       # REMOVED
       result.append(row)

json_response=json.dumps(result)
response=Response(json_response,content_type='application/json; charset=utf-8')
response.headers.add('content-length',len(json_response))
response.status_code=200
return response

get details

from flask import jsonify

@app.route('/get-details')
def getDetails():
      r=requests.get('http://localhost:8084/get-details')
      json_response=json.dumps(r.json())
      response=Response(json_response,content_type='application/json; charset=utf-8')
      response.headers.add('content-length',len(json_response))
      response.status_code=200
      return response

Upvotes: 5

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