python - @property裝飾器會影響到check_password_hash嗎？

問題描述

用flask來學習做一個博客，代碼如下：

# -*- coding:utf-8 -*-from flask import Flask,render_template,session,redirect,url_for,flash,requestfrom flask_login import LoginManager,login_required,UserMixin,login_user,logout_userfrom flask_bootstrap import Bootstrapfrom flask_sqlalchemy import SQLAlchemyfrom flask_wtf.file import FileFieldfrom flask_wtf import Formfrom wtforms import StringField,PasswordField,SubmitField,BooleanFieldfrom wtforms.validators import Requiredfrom werkzeug.security import generate_password_hash,check_password_hashimport pymssqlapp = Flask(__name__)app.config[’SQLALCHEMY_DATABASE_URI’] = ’mysql://root:password@localhost:3306/dh_inf_manage’app.config[’SQLALCHEMY_COMMIT_ON_TEARDOWN’] = Trueapp.config[’SQLALCHEMY_TRACK_MODIFICATIONS’] = Falseapp.config[’SECRET_KEY’] = ’hard to guess string’login_manager = LoginManager()login_manager.session_protection = ’strong’login_manager.login_view = ’login’login_manager.init_app(app)db=SQLAlchemy(app)bootstrap = Bootstrap()bootstrap.init_app(app)class NameForm(Form): name = StringField(u’用戶名：’,validators = [Required()]) password = PasswordField(u’密碼：’) submit = SubmitField(’Log In’) class LoginForm(Form): name = StringField(u’用戶名：’,validators = [Required()]) password = PasswordField(u’密碼’,validators = [Required()]) submit = SubmitField(u’登陸’) class User(UserMixin,db.Model): __tablename__ = ’dic_user’emp_sn = db.Column(db.String(50),primary_key = True) name = db.Column(db.String(45)) password = db.Column(db.String(128)) emp_dept_sn = db.Column(db.String(45),db.ForeignKey(’dic_dept.dept_sn’)) py_code = db.Column(db.String(50)) wb_code = db.Column(db.String(50)) autograph = db.Column(db.LargeBinary)def verify_password(self, password):return check_password_hash(self.password, password)@property def password(self):raise AttributeError(’password is not a readable attribute’)@password.setter def password(self, password):self.password = generate_password_hash(password) def __repr__(self):return ’<User %r>’ % self.username@login_manager.user_loaderdef load_user(user_id): return User.query.get(emp_sn) @app.route (’/’,methods=[’GET’,’POST’])def index(): return render_template(’index.html’)@app.route(’/login’, methods=[’GET’, ’POST’])def login(): form = LoginForm() if form.validate_on_submit():user = User.query.filter_by(emp_sn = form.name.data).first()if user is not None and user.verify_password(form.password.data): login_user(user) return redirect(url_for(’index’))flash (u’用戶名或密碼不正確’) return render_template(’login.html’,form = form)@app.route(’/logout’)@login_requireddef logout(): logout_user() flash(u’你已經注銷！’) return redirect(url_for(’index’)) @app.errorhandler(404)def page_not_found(e): return render_template(’404.html’),404@app.errorhandler(500)def internal_server_error(e): return render_template(’500.html’),500if __name__ == ’__main__’: app.run(host = ’192.168.199.203’,port = 8035,debug = True)

運行時，打開登陸網頁，輸入用戶名的密碼后，提示如下錯誤：

File 'C:flaskrappShiftTurnover.py', line 74, in loginif user is not None and user.verify_password(form.password.data):File 'C:flaskrappShiftTurnover.py', line 48, in verify_passwordreturn check_password_hash(self.password, password)File 'C:flaskrappShiftTurnover.py', line 52, in passwordraise AttributeError(’password is not a readable attribute’)AttributeError: password is not a readable attribute

整個代碼，只有

@property def password(self):raise AttributeError(’password is not a readable attribute’)

這里拋出這個錯誤，login函數并沒有對密碼進行更改，為什么會有這樣的提示呢？

問題解答

真正原因找到了，主要的我數據庫的字段password與函數名password沖突了，把函數名稱改一下就可以了，我是改為password_hash。

@property def password_hash(self):raise AttributeError(’password is not a readable attribute’)@password_hash.setter def password_hash(self, password):self.password = generate_password_hash(password)回答2：

@password.setterdef password(self, password): self.password_hash = generate_password_hash(password)

應該是self.password_hash而不是self.password, generate_password_hash是生成密碼散列值