from flask import Flask,render_template,request,redirect,session app=Flask(__name__)#一个Flask类的对象 app.secret_key="djskhhujas2jdhku33" app.debug=True#自动重启 USER_DICT={ '1':{'name':"jelena1","age":18}, '2':{'name':"zhangsan","age":32}, '3':{'name':"lisi","age":21} } @app.route("/login",methods=["GET","POST"],) def login(): if request.method=="GET": return render_template("login.html") user=request.form.get("user") pwd=request.form.get("pwd") if user=='jelena' and pwd=='123': session["user_info"]=user return redirect("/index") else: return render_template("login.html", msg="用户名或者密码错误") @app.route("/index") def index(): user_info= s