from flask import Flask, request, session app = Flask(__name__) app.secret_key = 'secret_key' @app.route('/login', methods=['POST']) def login(): username = request.form['username'] password = request.form['password'] # 验证用户名和密码 session['username'] = username return '登录成功!' @app.route('/profile') def profile(): if 'username' in session: return f'欢迎回来,{session["username"]}!' else: return '请先登录' if __name__ == '__main__': app.run()