1.更新User對象，設置對內的_password

class User(db.Model):

__tablename__ = ‘user‘

_password = db.Column(db.String(200), nullable=False) #內部使用

class User(db.Model):
    __tablename__ = ‘user‘
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    username = db.Column(db.String(20), nullable=False)
    _password 
 
= db.Column(db.String(200), nullable=False)#內部使用

2.編寫對外的password

from werkzeug.security import generate_password_hash, check_password_hash

@property

def password(self): #外部使用，取值

return self._password

@password.setter

def password(self, row_password):#外部使用，賦值

self._password = generate_password_hash(row_password)

    @property
    def password(self):#外部使用
        return self._password

    @password.setter
    def password(self,row_password):
        self._password=generate_password_hash(row_password)

    def check_password(self,row_password):
        result=check_password_hash(self._password,row_password)
        
 
return result

3.密碼驗證方法：

def check_password(self, row_password): #密碼驗證

result = check_password_hash(self._password,row_password)

return result

4.登錄驗證：

password1 = request.form.get(‘password‘)

user = User.query.filter(User.username == username).first()

if user:

if user.check_password(password1):

@app.route(‘/login/‘, methods=[‘GET‘, ‘POST‘])
def login():
    if request.method == ‘GET‘:
        return render_template(‘login.html‘)
    else:
        usern = request.form.get(‘username‘)
        passw = request.form.get(‘password‘)
        user = User.query.filter(User.username == usern).first()
        if user:
            if user.check_password(passw):
                session[‘user‘] = usern
                # session[‘userid‘]=user.id
                session.permannet = True
                return redirect(url_for(‘shouye‘))
            else:
                return ‘密碼錯誤‘
        else:
            return ‘用戶名不存在‘

密碼保護(2017.12.22)