### 步骤 1:设置项目目录
首先,创建项目目录并进入该目录:
mkdir payment_gateway
cd payment_gateway
创建子目录和文件:
mkdir payment
touch app.py config.py run.py requirements.txt
touch payment/__init__.py payment/routes.py payment/service.py
### 步骤 2:安装虚拟环境和依赖项
设置虚拟环境并激活它:
python -m venv venv
source venv/bin/activate # 对于Windows: venv\Scripts\activate
安装Flask和requests库:
pip install Flask requests
将依赖项保存到
requirements.txt文件中:
pip freeze > requirements.txt
### 步骤 3:编写代码
####
app.pyfrom flask import Flask
from config import Config
from payment.routes import payment_bp
app = Flask(__name__)
app.config.from_object(Config)
app.register_blueprint(payment_bp, url_prefix='/payment')
if __name__ == '__main__':
app.run(debug=True)
####
config.py
`python
class Config:
SECRET_KEY = 'your_secret_key'
PAYMENT_GATEWAY_URL = '
https://fake-payment-gateway.com'
API_KEY = 'your_api_key'
#### payment/__init__.pypython
# Init file for the payment module
#### payment/routes.pypython
from flask import Blueprint, request, jsonify
from .service import PaymentService
payment_bp
name('payment', __name__)
@payment_bp.route('
/pay', methods=['POST'])
def pay():
data = request.json
amount = data.get('amount')
order_id = data.get('order_id')
if not amount or not order_id:
return jsonify({'error': 'Missing amount or order_id'}), 400
payment_url = PaymentService.initiate_payment(amount, order_id)
return jsonify({'payment_url': payment_url})
@payment_bp.route('
/callback', methods=['POST'])
def callback():
data = request.json
payment_status = PaymentService.handle_callback(data)
return jsonify({'status': payment_status})
@payment_bp.route('/status/<order_id>', methods=['GET'])
def status(order_id):
payment_status = PaymentService.check_status(order_id)
return jsonify({'status': payment_status})
#### payment/service.pypython
import requests
from flask import current_app
class PaymentService:
@staticmethod def initiate_payment(amount, order_id):
payment_gateway_url = current_app.config['PAYMENT_GATEWAY_URL']
api_key = current_app.config['API_KEY']
response =
requests.post(payment_gateway_url, json={
'amount': amount,
'order_id': order_id,
'api_key': api_key
})
response_data = response.json()
return response_data['payment_url']
@staticmethod def handle_callback(data):
payment_status = data.get('status')
order_id = data.get('order_id')
# Update your order status in the database
# In this example, we'll just print the status
print(f"Order {order_id} has been updated with status: {payment_status}")
return payment_status
@staticmethod def check_status(order_id):
# Here you would check the payment status from your database
# For this example, we will just return a fake status
return 'paid'
#### run.pypython
fr
== ' a
main_name__ == '__main__':
app.run()
### 步骤 4:运行应用程序
在虚拟环境中,运行Flask应用程序:
sh
python
run.py
现在你的支付接口应该可以在http://127.0.0.1:5000上访问。
### 步骤 5:创建ZIP文件
在项目根目录中运行以下命令来创建ZIP文件:
sh
zip -r payment_gateway.zip *
### 完整项目结构
payment_gateway/
├── venv/ # 虚拟环境目录
├──
app.py├── config.
initnt/
│ ├── __init__.py
│ ├──
routes.py│ ├──
service.py├── requirements.txt
├──
run.py├── payment_gateway.zip # 生成的ZIP文件
- app.py
:设置Flask应用程序,加载配置文件,注册支付蓝图,并启动应用。
- config.py
:包含应用程序配置,如密钥和init
- payment/__init__.py
:支付模块的初始化文件。
- payment/routes.py
:定义支付相关的API路由和处理函数。
- payment/service.py
:包含支付服务逻辑,如发起支付请求、处理回调和查询支付状态。
- run.py`:用于运行Flask应用程序。