发布API-创建代码后需要遵循哪些步骤，以便我可以通过此API将数据添加到txt文件中

Question

I am new to API, and get a tasks of creating POST API. I have created a code somehow. I want to add data to the hello.txt through post API, So how will I do it? Here is my code:

import flask
from flask import request, jsonify

app = flask.Flask(__name__)
app.config["DEBUG"] = True

@app.route('/api/v1/resources/messages', methods = ['POST'])
def api_message():

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

   elif request.headers['Content-Type'] == 'application/octet-stream':
       return "Binary message written!"

   elif request.headers['Content-Type'] == 'application/json':

       f = open('F:\Asif_Ahmed\Projects\api\hello.txt',"w")
       f.write(request.data)
       f.close()
       return "JSON Message: " + json.dumps(request.json)

   else:
        return "415 Unsupported Media Type ;)"

app.run()

Answer 1

from flask import Flask, jsonify, render_template, request #import flask library
from flask_basicauth import BasicAuth # import flask library for create basic authentication if needed
from flask_cors import CORS # import flask library Cross-Origin Resource Sharing that is a mechanism that uses additional HTTP headers to tell a browser to let a web application running at one origin (domain) have permission to access selected resources from a server at a different origin


app = Flask(__name__)
CORS(app) #set-up cors for my app

#if you want use basic authentication you need set-up username and password
app.config['BASIC_AUTH_USERNAME'] = 'admin'
app.config['BASIC_AUTH_PASSWORD'] = 'password'


basic_auth = BasicAuth(app)#set-up username and password for my app but in this case I'm not specifying yet in which API use them



@app.route('/api/v1/resources/add_messages', methods=['POST'])#create my POST api
@basic_auth.required# set-up basic authentication for this API, comment out if not needed
def update_credential ():
    json_credential=request.get_json()#get the JSON sent via API
    print (json_credential["message"])#get the node "message" of my JSON
    ###########
    #code to write in your file, you need write the json_credential["message"]
    ###########
    return ("ok")



if __name__ == '__main__':
  app.run(host='0.0.0.0', port=1024, threaded=True)#start my flask app with local_host IP and specific port, if you don't specify the port it will run in the default port

In this case the JSON Input should be:

{"message":"your text"}

Please let me know if something is not clear, I even try this code on my local and the JSON is passed without problems.....

So you need run your python script and see that the API is running, if you had no JSON to send and was just a simple API that give back information you should have used even Chrome but in this case that you need send some JSON data I would advice you to use Postman. See screenshot example: