Flask项目学生管理系统(1).zip

from flask import Flask,render_template,request,session,redirect import time app = Flask(__name__) app.secret_key = "you_is_big_sb" students_info = [ {'id':1,'name':'alex','age':22,'sex':'male','score':88}, {'id':2,'name':'egon','age':18,'sex':'male','score':87}, {'id':3,'name':'xiaoming','age':16,'sex':'female','score':60}, {'id':4,'name':'wangwei','age':31,'sex':'male','score':13}, ] def is_logined(func): def inner(*args,**kwargs): if session.get("is_login"): if session["is_login"] + 3000*60 > time.time(): return func(*args,**kwargs) else: return "用户登录已过期" return "你没有权限访问这个页面" inner.__name__ = func.__name__ return inner @app.route('/') def hello_world(): return 'Hello World!' @app.route("/login",methods=("GET","POST")) def login(): if request.method == "GET": return render_template("login.html") elif request.method == "POST": username = request.form.get("username") password = request.form.get("password") # 这里日后使用数据库存储管理员信息 if username == "alex" and password == "123": session["is_login"] = time.time() return redirect("/students_manage") else: msg = "用户名或密码错误" return render_template("login.html",msg=msg) @app.route("/students_manage") @is_logined def students_manage(): print(students_info) return render_template("students_manage.html",students=students_info) @app.route("/student_add",methods=("GET",'POST')) @is_logined def student_add(): if request.method == "GET": return render_template("student_add.html") else: print(request.form) user_dict = dict(request.form) #前端处理数据，后端直接将数据存入内存 if len(students_info): current_id = students_info[-1]["id"]+1 else: current_id = 1 user_dict["id"] = current_id try: user_dict["age"] = int(user_dict["age"]) user_dict["score"] = int(user_dict["score"]) except ValueError: return "输入信息不正确" print(user_dict) students_info.append(user_dict) return redirect("/students_manage") @app.route("/delete",methods=("GET","POST")) @is_logined def student_delete(): #1.获取删除的id #2.删除数据 #3.重定向到学生管理界面 del_ids = [] if request.args.get("id"): del_id = int(request.args.get("id")) del_ids.append(del_id) elif request.json: del_ids = request.json print(del_ids) #需要删除的元素的id for i in range(len(students_info)-1,-1,-1): if students_info[i]["id"] in del_ids: print(students_info.pop(i)) return redirect("/students_manage") @app.route("/edit",methods=("GET","POST")) @is_logined def student_edit(): if request.method == "GET": edit_id = int(request.args.get("id")) edit_user = None for index,student in enumerate(students_info): if student["id"] == edit_id: edit_user = student break else: return "没有找到该用户" return render_template("student_edit.html",student=edit_user) else: # print(students_info) user_dict = dict(request.form) #原始数据 # print(user_dict) #前端处理数据，后端直接将数据存入内存 for i in range(len(students_info)): if students_info[i]["id"] == int(user_dict["user_id"]): students_info[i]["name"] = user_dict["name"] students_info[i]["sex"] = user_dict["sex"] try: students_info[i]["age"] = int(user_dict["age"]) students_info[i]["score"] = int(user_dict["score"]) except ValueError: return "输入信息不正确" break else: return "找不到该用户" return redirect("/students_manage") if __name__ == '__main__': app.run(debug=True)