云计算数据库应用

from flask import Flask, request, jsonify 
from pymongo import MongoClient 

app = Flask(__name__) 

# 连接到MongoDB云服务 
client = MongoClient("mongodb+srv://<username>:<password>@cluster0.mongodb.net/myFirstDatabase?retryWrites=true&w=majority") 
db = client["mydatabase"] 
users_collection = db["users"] 

@app.route('/register', methods=['POST']) 
def register_user(): 
data = request.get_json() 
username = data.get('username') 
password = data.get('password') 
email = data.get('email') 

# 验证数据有效性（此处省略） 

# 插入新用户到数据库 
new_user = { 
'username': username, 
'password': password, # 注意：实际中应存储哈希值而非明文密码 
'email': email 
} 
users_collection.insert_one(new_user) 

return jsonify({'message': 'User registered successfully'}), 201 

if __name__ == '__main__': 
app.run(debug=True)

@app.route('/login', methods=['POST']) 
def login_user(): 
data = request.get_json() 
username = data.get('username') 
password = data.get('password') 

# 验证数据有效性（此处省略） 

# 在数据库中查找用户 
user = users_collection.find_one({'username': username}) 

if user and verify_password(password, user['password']): # 假设有一个verify_password函数用于验证密码 
return jsonify({'message': 'Login successful', 'user_id': user['_id']}), 200 
else: 
return jsonify({'message': 'Invalid username or password'}), 401