from flask import Flask,render_template,request,redirect,session
app = Flask(__name__,template_folder=‘templates‘)
app.secret_key = "sdsfdsgdfgdfgfh"
@app.before_request
def process_request():
if request.path=="/login":
return None
if not session.get("user_info"):
return redirect("/login")
return None
@app.after_request
def process_response(response):
print(2222)
return response
@app.route("/login",methods=["GET","POST"])
def login():
if request.method=="GET":
return render_template("login.html")
else:
# print(request.values) #这个里面什么都有，相当于body
username = request.form.get("username")
password = request.form.get("password")
if username=="haiyan" and password=="123":
session["user_info"] = username
# session.pop("user_info") #删除session
return redirect("/index")
else:
# return render_template("login.html",**{"msg":"用户名或密码错误"})
return render_template("login.html",msg="用户名或者密码错误")
@app.route("/index",methods=["GET","POST"])
def index():
# 用于验证，代码繁重
# if not session.get("user_info"):
# return redirect("/login")
return render_template("index.html")
if __name__ == ‘__main__‘:
app.run(debug=True)
