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4-8 POST가 안돼요
[왕초보] 비개발자를 위한, 웹개발 종합반 (프로그래밍 실무, 풀스택) v5
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스스로 해결


화성 땅 주문하기 를 누르면 alert도 뜨지 않고 아무런 변화가 없습니다. 터미널에서는 아래와 같은 내용이 나오구요.


그런데 이따가 다시 해보면 이젠 아예 접속도 안됩니다. localhost:5000 가도 사이트에 연결할 수 없다고 떠요.


접속이 안되는 문제, 그리고 어떻게 어떻게 접속이 되도 작동을 안하고..난감하네요.


코드 화면


스파르타 즉문즉답




작성한 코드 및 에러 메세지

app.py


from flask import Flask, render_template, request, jsonify

app = Flask(__name__)


from pymongo import MongoClient

import certifi


ca = certifi.where()


client = MongoClient('mongodb+srv://test:sparta@cluster0.내주소.mongodb.net/내DB명?retryWrites=true&w=majority', tlsCAFile=ca)

db = client.dbsparta


@app.route('/')

def home():

  return render_template('index.html')


@app.route("/mars", methods=["POST"])

def mars_post():

  name_receive = request.form['name_give']

  address_receive = request.form['address_give']  

  size_receive = request.form['size_give']

  

  doc = {

    'name' : name_receive,

    'address' : address_receive,

    'size' : size_receive

  }

  db.mars.insert_one(doc)


  return jsonify({'msg':'저장 완료!'})


@app.route("/mars", methods=["GET"])

def mars_get():

  return jsonify({'msg':'GET 연결 완료!'})


if __name__ == '__main__':

  app.run('0.0.0.0', port=5000, debug=True)


---


Index.html


<!DOCTYPE html>

<html lang="en">


<head>

  <meta charset="UTF-8" />

  <meta http-equiv="X-UA-Compatible" content="IE=edge" />

  <meta name="viewport" content="width=device-width, initial-scale=1.0" />


  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"

    integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous" />

  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"

    integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"

    crossorigin="anonymous"></script>


  <link href="https://fonts.googleapis.com/css2?family=Gowun+Batang:wght@400;700&display=swap" rel="stylesheet" />


  <title>선착순 공동구매</title>


  <style>

    * {

      font-family: "Gowun Batang", serif;

      color: white;

    }


    body {

      background-image: linear-gradient(0deg,

          rgba(0, 0, 0, 0.5),

          rgba(0, 0, 0, 0.5)),

        url("https://cdn.aitimes.com/news/photo/202010/132592_129694_3139.jpg");

      background-position: center;

      background-size: cover;

    }


    h1 {

      font-weight: bold;

    }


    .order {

      width: 500px;

      margin: 60px auto 0px auto;

      padding-bottom: 60px;

    }


    .mybtn {

      width: 100%;

    }


    .order>table {

      margin: 40px 0;

      font-size: 18px;

    }


    option {

      color: black;

    }

  </style>

  <script>

    $(document).ready(function () {

      show_order();

    });

    function show_order() {

      fetch('/mars').then((res) => res.json()).then((data) => {

        console.log(data)

        alert(data['msg'])

      })

    }

    function save_order() {

      let name = $('#name').val()

      let address = $('#address').val()

      let size = $('#size').val()


      let formData = new FormData();

      formData.append("name_give", name)

      formData.append("address_give", address)

      formData.append("size_give", size)


      fetch('/mars', { method: "POST", body: formData }).then((res) => res.json()).then((data) => {

        alert(data["msg"]);

      });

    }

  </script>

</head>


<body>

  <div class="mask"></div>

  <div class="order">

    <h1>화성에 땅 사놓기!</h1>

    <h3>가격: 평 당 500원</h3>

    <p>

      화성에 땅을 사둘 수 있다고?<br />

      앞으로 백년 간 오지 않을 기회. 화성에서 즐기는 노후!

    </p>

    <div class="order-info">

      <div class="input-group mb-3">

        <span class="input-group-text">이름</span>

        <input id="name" type="text" class="form-control" />

      </div>

      <div class="input-group mb-3">

        <span class="input-group-text">주소</span>

        <input id="address" type="text" class="form-control" />

      </div>

      <div class="input-group mb-3">

        <label class="input-group-text" for="size">평수</label>

        <select class="form-select" id="size">

          <option selected>-- 주문 평수 --</option>

          <option value="10평">10평</option>

          <option value="20평">20평</option>

          <option value="30평">30평</option>

          <option value="40평">40평</option>

          <option value="50평">50평</option>

        </select>

      </div>

      <button onclick="save_order()" type="button" class="btn btn-warning mybtn">

        주문하기

      </button>

    </div>

    <table class="table">

      <thead>

        <tr>

          <th scope="col">이름</th>

          <th scope="col">주소</th>

          <th scope="col">평수</th>

        </tr>

      </thead>

      <tbody id="order-box">

        <tr>

          <td>홍길동</td>

          <td>서울시 용산구</td>

          <td>20평</td>

        </tr>

        <tr>

          <td>임꺽정</td>

          <td>부산시 동구</td>

          <td>10평</td>

        </tr>

        <tr>

          <td>세종대왕</td>

          <td>세종시 대왕구</td>

          <td>30평</td>

        </tr>

      </tbody>

    </table>

  </div>

</body>


</html>



---


터미널 에러 메세지


guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ c:/Users/guihy/Desktop/Sparta/projects/02.mars/venv/Scripts/python.exe c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py            * Serving Flask app 'app'

 * Debug mode: on

WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.                * Running on all addresses (0.0.0.0)

 * Running on http://127.0.0.1:5000

 * Running on http://192.168.1.86:5000

Press CTRL+C to quit                            * Restarting with stat

 * Debugger is active!

 * Debugger PIN: 570-846-522

127.0.0.1 - - [15/Mar/2023 10:09:43] "GET / HTTP/1.1" 200 -

127.0.0.1 - - [15/Mar/2023 10:09:44] "GET /mars HTTP/1.1" 200 -

127.0.0.1 - - [15/Mar/2023 10:09:53] "GET /favicon.ico HTTP/1.1" 404 -   

127.0.0.1 - - [15/Mar/2023 10:13:08] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 2551, in __call__

  return self.wsgi_app(environ, start_response)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 2531, in wsgi_app

  response = self.handle_exception(e)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 2528, in wsgi_app

  response = self.full_dispatch_request()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 1825, in full_dispatch_request

  rv = self.handle_user_exception(e)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 1823, in full_dispatch_request

  rv = self.dispatch_request()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\flask\app.py", line 1799, in dispatch_request

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

 File "c:\Users\guihy\Desktop\Sparta\projects\02.mars\app.py", line 23, in mars_post

  db.mars.insert_one(doc)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\collection.py", line 628, in insert_one

  self._insert_one(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\collection.py", line 569, in _insert_one

  self.__database.client._retryable_write(acknowledged, _insert_command, session)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 1475, in _retryable_write

  with self._tmp_session(session) as s:

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 113, in __enter__

  return next(self.gen)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 1757, in _tmp_session

  s = self._ensure_session(session)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 1740, in _ensure_session

  return self.__start_session(True, causal_consistency=False)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 1685, in __start_session

  self._topology._check_implicit_session_support()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\topology.py", line 538, in _check_implicit_session_support   

  self._check_session_support()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\topology.py", line 554, in _check_session_support

  self._select_servers_loop(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\topology.py", line 238, in _select_servers_loop

  raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-ddlhzlf-shard-00-00.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124),ac-ddlhzlf-shard-00-01.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124),ac-ddlhzlf-shard-00-02.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124), Timeout: 30s, Topology Description: <TopologyDescription id: 6411fbd7d673ee4b2e24c073, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-ddlhzlf-shard-00-00.hq4jwjz.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ddlhzlf-shard-00-00.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>, <ServerDescription ('ac-ddlhzlf-shard-00-01.hq4jwjz.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ddlhzlf-shard-00-01.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>, <ServerDescription ('ac-ddlhzlf-shard-00-02.hq4jwjz.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ddlhzlf-shard-00-02.hq4jwjz.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>]>

 * Detected change in 'c:\\Users\\guihy\\Desktop\\Sparta\\projects\\02.mars\\app.py', reloading

Exception in thread Thread-1:

Traceback (most recent call last):

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner

  self.run()

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\threading.py", line 870, in run

  self._target(*self._args, **self._kwargs)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\werkzeug\serving.py", line 766, in serve_forever

  super().serve_forever(poll_interval=poll_interval)

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\socketserver.py", line 232, in serve_forever

  ready = selector.select(poll_interval)

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\selectors.py", line 323, in select

  r, w, _ = self._select(self._readers, self._writers, [], timeout)

 File "C:\Users\guihy\AppData\Local\Programs\Python\Python38\lib\selectors.py", line 314, in _select

  r, w, x = select.select(r, w, w, timeout)   

OSError: [WinError 10038] 소켓 이외의 개체에 작업 을 시도했습니다

 * Restarting with stat

Traceback (most recent call last):

 File "c:\Users\guihy\Desktop\Sparta\projects\02.mars\app.py", line 5, in <module>

  import certifi

ModuleNotFoundError: No module named 'certifi'   

(venv)

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ c:/Users/guihy/Desktop/Sparta/projects/02.mars/venv/Scripts/python.exe c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py

Traceback (most recent call last):

 File "c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py", line 5, in <module>

  import certifi

ModuleNotFoundError: No module named 'certifi'   

(venv)

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ pip install certifi

Collecting certifi

 Using cached certifi-2022.12.7-py3-none-any.whl (155 kB)

Installing collected packages: certifi

Successfully installed certifi-2022.12.7

WARNING: You are using pip version 20.2.1; however, version 23.0.1 is available.

You should consider upgrading via the 'c:\users\guihy\desktop\sparta\projects\02.mars\venv\scripts\python.exe -m pip install --upgrade pip' command.  

(venv) 

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ c:/Users/guihy/Desktop/Sparta/projects/02.mars/venv/Scripts/python.exe c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py

Traceback (most recent call last):

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 89, in _resolve_uri

  results = _resolve(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 43, in _resolve

  return resolver.resolve(*args, **kwargs)    

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1368, in resolve

  return get_default_resolver().resolve(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1190, in resolve

  (request, answer) = resolution.next_request() 

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 691, in next_request

  raise NXDOMAIN(qnames=self.qnames_to_try, responses=self.nxdomain_responses)

dns.resolver.NXDOMAIN: The DNS query name does not exist: _mongodb._tcp.cluster0.xn--220bl33agsf.mongodb.net.


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

 File "c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py", line 9, in <module>

  client = MongoClient('mongodb+srv://test:sparta@cluster0.내주소.mongodb.net/내DB명?retryWrites=true&w=majority', tlsCAFile=ca)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 736, in __init__

  res = uri_parser.parse_uri(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\uri_parser.py", line 542, in parse_uri

  nodes = dns_resolver.get_hosts()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 121, in get_hosts

  _, nodes = self._get_srv_response_and_hosts(True)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 101, in _get_srv_response_and_hosts    

  results = self._resolve_uri(encapsulate_errors)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 97, in _resolve_uri

  raise ConfigurationError(str(exc))

pymongo.errors.ConfigurationError: The DNS query name does not exist: _mongodb._tcp.cluster0.xn--220bl33agsf.mongodb.net.

(venv) 

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ ^C

(venv) 

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ c:/Users/guihy/Desktop/Sparta/projects/02.mars/venv/Scripts/python.exe c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py

Traceback (most recent call last):

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 89, in _resolve_uri

  results = _resolve(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 43, in _resolve

  return resolver.resolve(*args, **kwargs)    

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1368, in resolve

  return get_default_resolver().resolve(     

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1190, in resolve

  (request, answer) = resolution.next_request() 

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 691, in next_request

  raise NXDOMAIN(qnames=self.qnames_to_try, responses=self.nxdomain_responses)

dns.resolver.NXDOMAIN: The DNS query name does not exist: _mongodb._tcp.cluster0.xn--220bl33agsf.mongodb.net.


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

 File "c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py", line 9, in <module>

  client = MongoClient('mongodb+srv://test:sparta@cluster0.내주소.mongodb.net/내DB명?retryWrites=true&w=majority', tlsCAFile=ca)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\mongo_client.py", line 736, in __init__

  res = uri_parser.parse_uri(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\uri_parser.py", line 542, in parse_uri

  nodes = dns_resolver.get_hosts()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 121, in get_hosts

  _, nodes = self._get_srv_response_and_hosts(True)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 101, in _get_srv_response_and_hosts    

  results = self._resolve_uri(encapsulate_errors)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 97, in _resolve_uri

  raise ConfigurationError(str(exc))

pymongo.errors.ConfigurationError: The DNS query name does not exist: _mongodb._tcp.cluster0.xn--220bl33agsf.mongodb.net.

(venv)

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$ c:/Users/guihy/Desktop/Sparta/projects/02.mars/venv/Scripts/python.exe c:/Users/guihy/Desktop/Sparta/projects/02.mars/app.py

Traceback (most recent call last):

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 89, in _resolve_uri

  results = _resolve(

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 43, in _resolve

  return resolver.resolve(*args, **kwargs)    

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1368, in resolve

  return get_default_resolver().resolve(     

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\dns\resolver.py", line 1190, in resolve

mars\venv\lib\site-packages\pymongo\uri_parser.py", line 542, in parse_uri

  nodes = dns_resolver.get_hosts()

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 121, in get_hosts

  _, nodes = self._get_srv_response_and_hosts(True)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 101, in _get_srv_response_and_hosts

  results = self._resolve_uri(encapsulate_errors)

 File "C:\Users\guihy\Desktop\Sparta\projects\02.mars\venv\lib\site-packages\pymongo\srv_resolver.py", line 97, in _resolve_uri

  raise ConfigurationError(str(exc))

pymongo.errors.ConfigurationError: The DNS query name does not exist: _mongodb._tcp.cluster0.xn--220bl33agsf.mongodb.net.

(venv)

guihy@DESKTOP-OABH4GQ MINGW64 ~/Desktop/Sparta/projects/02.mars

$




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