from flask import Flask,render_template,redirect,request,session app = Flask(__name__) app.secret_key = "sdfasdfasdf3fsdf" @app.route(‘/‘) def hello_world(): return ‘Hello World!‘ def wapper(func): def inner(*args,**kwargs): if not session.get(‘user_info‘): return redirect(‘/login‘) return func(*args,**kwargs) return inner @app.route(‘/login‘,methods=[‘GET‘,‘POST‘]) def login(): if request.method == "GET": return render_template(‘login.html‘) else: user = request.form.get(‘username‘) pwd = request.form.get(‘password‘) if user == ‘alex‘ and pwd == ‘123‘: session[‘user_info‘] = user return redirect(‘/index‘) else: return render_template(‘login.html‘,msg=‘用户或密码错误‘) @app.route(‘/index‘,methods=[‘GET‘]) @wapper def index(): return render_template(‘index.html‘) @app.route(‘/query‘,methods=[‘GET‘]) def query(): if not session.get(‘user_info‘): return redirect(‘/login‘) return ‘query‘ @app.route(‘/student‘,methods=[‘GET‘]) @wapper def student(): return ‘student‘ if __name__ == ‘__main__‘: app.run()