flask_api_post5.py

from flask import json

@app.route('/messages', methods = ['POST'])
def api_message():

    if request.headers['Content-Type'] == 'text/plain':
        return "Text Message: " + request.data

    elif request.headers['Content-Type'] == 'application/json':
        return "JSON Message: " + json.dumps(request.json)

    else:
        return "415 Unsupported Media Type ;)"