python实现图书借阅系统

from flask import Flask,render_templatefrom flask import requestfrom DB import createdbfrom flask import sessionapp = Flask(__name__)app.config['SECRET_KEY'] = '123456'# 首页-->登录页面@app.route('/')def hello_world():  return render_template('login.html')# 注册页面@app.route('/showregister')def showregister():  return render_template('register.html')# 登录页面提交信息@app.route('/login',methods=['GET','POST'])def login():  username = request.form.get('username')  stuid = request.form.get('password') # 学号为密码  flag = createdb.selectStu(stuid,username)  if flag:    session['username'] = username    session['stuid'] = stuid    return render_template('index.html', stuid=stuid, username=username)  else:    return render_template('login.html')# 注册页面提交信息@app.route('/register',methods=['GET','POST'])def register():  username = request.form.get('username')  stuid = request.form.get('password')# 学号为密码  return createdb.insert(stuid,username)# 显示书籍信息页面@app.route('/ShowBook')def ShowBook():  return createdb.queryAllBook()# 显示添加书籍页面@app.route('/AddBook')def AddBook():  return render_template('AddBook.html')# 添加书籍信息@app.route('/Add',methods=['GET','POST'])def Add():  bookName = request.form.get('bookname')  bookAuthor = request.form.get('author')  return createdb.addBook(bookName,bookAuthor)# 显示借阅书籍信息@app.route('/BorrowBook')def BorrowBook():  return createdb.queryBorrowBook()# 显示借阅书籍信息@app.route('/Borrow',methods=['GET','POSt'])def Borrow():  bookName = request.form.get('bookName')  bookAuthor = request.form.get('bookAuthor')  username = session.get('username')  stuid = session.get('stuid')  return createdb.Borrow(username,stuid,bookName,bookAuthor)# 显示借阅书籍信息@app.route('/ReturnBook',methods=['GET','POST'])def ReturnBook():  bookName = request.form.get("bookName")  return createdb.ReturnBook(bookName)# 显示借阅书籍信息@app.route('/UserInfo')def UserInfo():  stuid = session.get('stuid')  username = session.get('username')  return render_template('userInfo.html',stuid = stuid,username = username)if __name__ == '__main__':  app.run(debug=True)