python - flask-login中的current_user.username没有数据的问题
采用flask写一个登陆页面，代码如下：
# -*- coding:utf-8 -*-
from flask import Flask,render_template,session,redirect,url_for,flash,request
from flask_login import LoginManager,login_required,UserMixin,login_user,logout_user
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy
from flask_wtf.file import FileField
from flask_wtf import Form
from wtforms import StringField,PasswordField,SubmitField,BooleanField
from wtforms.validators import Required
from werkzeug.security import generate_password_hash,check_password_hash
import pymssql
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:password@localhost:3306/dh_inf_manage'
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.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'用户名：',validators = [Required()])
password = PasswordField(u'密码：')
submit = SubmitField('Log In')
class LoginForm(Form):
name = StringField(u'用户名：',validators = [Required()])
password = PasswordField(u'密码',validators = [Required()])
submit = SubmitField(u'登陆')
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_hash(self):
raise AttributeError('password is not a readable attribute')
@password_hash.setter
def password_hash(self, password):
self.password = generate_password_hash(password)
def get_id(self):
return unicode(self.emp_sn)
def __repr__(self):
return '<User %r>' % self.name
@login_manager.user_loader
def load_user(user_id):
return User.query.get(int(user_id))
@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'用户名或密码不正确')
return render_template('login.html',form = form)
@app.route('/logout')
@login_required
def logout():
logout_user()
flash(u'你已经注销！')
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'),500
if __name__ == '__main__':
app.run(host = '192.168.199.203',port = 8035,debug = True)
index.html代码：
{% extends "base.html" %}
{% block title %}Flasky{% endblock %}
{% block page_content %}
<p class="page-header">
<h1>Hello, {% if current_user.is_authenticated %}{{ current_user.username }}{% else %}Stranger{% endif %}!</h1>
</p>
{% endblock %}
现在问题是点击登陆后，index页面没有显示用户名称。如下图所见：
感觉好像login_user没有获取到用户一样
