从服务器获取带有表单数据的客户端响应

<form action="/submit" method="POST">
  <input type="text" name="username">
  <input type="password" name="password">
  <button type="submit">Submit</button>
</form>

from flask import Flask, request

app = Flask(__name__)

@app.route('/submit', methods=['POST'])
def submit():
    username = request.form['username']
    password = request.form['password']
    return f"Username: {username}, Password: {password}"

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/submit', methods=['POST'])
def submit():
    if request.method == 'OPTIONS':
        response = app.make_default_options_response()
        response.headers['Access-Control-Allow-Origin'] = '*'
        response.headers['Access-Control-Allow-Methods'] = 'POST'
        response.headers['Access-Control-Allow-Headers'] = 'Content-Type'
        return response
    username = request.form['username']
    password = request.form['password']
    response = jsonify({"message": "Success"})
    response.headers['Access-Control-Allow-Origin'] = '*'
    return response