人工智能—网站信息的登录与操作(不规划在同一个.py中，不利于欣赏)

logining.py

from flask import Flask
from flask import render_template
from flask import request#交互模块
from flask import redirect
from flask import Markup
from flask import session

#template_folder="temp"设置模板文件夹路径

app=Flask(__name__)#typtFlask
app.secret_key="DD"
STUDENT_DICT = {
    1: {'NAME': 'Old', 'AGE': 38, 'GENDER': '中'},
    2: {'NAME': 'Boy', 'AGE': 73, 'GENDER': '男'},
    3: {'NAME': 'EDU', 'AGE': 84, 'GENDER': '女'},
}

@app.route("/hello")//在另一个模板文件下的模板html
def hello():
    return render_template("hello.html")

@app.before_request
def before_login():#每次请求都在请求生效之前，进行本函数的执行（验证）  可以针对多种条件进行验证，验证是顺序符合函数书写顺序
    if request.path=="/log":
        return None     #不符合条件或是符合，进行不同处理与专项
    if session.get("user"):
        return None
    return redirect("/log")


@app.route("/log",methods=["GET","POST"])
def login():
    if request.method=="POST":
        if request.form["user"]=="wlx" and request.form.get("pwd")=="wlx":
            session["user"]=request.form["user"]
            return redirect("/stu_info")
        else:
            return render_template("logining.html",msg="用户名或密码错入，请重新输入")
    return render_template("logining.html")  #是不是一开始就否定执行到了这，才出现了登录表单，才有了

@app.route("/stu_info")
def stu_info():
    if session.get("user"):
       return render_template("show1.html",stu_info=STUDENT_DICT)
    return redirect("/login")

@app.route("/add",methods=["GET","POST"])
def add():
    if request.method=="POST":
        if session.get("user"):

            uid=int(request.form["ID"])
            uname=request.form["uname"]
            age=request.form["age"]
            gender=request.form["gender"]
            STUDENT_DICT[uid]={
                "NAME":uname,
                "AGE":age,
                "GENDER":gender
            }
            return redirect("/stu_info")
        return redirect("/login")



    return render_template("xin.html")


@app.route("/edit/<int:nid>",methods=["GET","POST"])
def edit(nid):
    stu=STUDENT_DICT[nid]
    if request.method=="POST":
        if session.get("user"):
            uid=nid
            uname=request.form["uname"]
            age=request.form["age"]
            gender=request.form["gender"]
            STUDENT_DICT[uid]={
            "NAME":uname,
            "AGE": age,
            "GENDER":gender
            }
            return redirect("/stu_info")
        return redirect("/login")


    return render_template("edit.html",stu=stu,stu_id=nid)



@app.route("/delete/<int:nid>")
def delete(nid):
    if session.get("user"):
         STUDENT_DICT.pop(nid)
         return redirect("/stu_info")
    return redirect("/login")


app.run("0.0.0.0",8081,debug=True)