import json
from flask import Flask, render_template, request, jsonify
from flask_mysqldb import MySQL
from flask_login import logout_user
import pymysql
from flask import Flask, render_template
from flask import Flask, jsonify
from flask import Flask, send_from_directory
from flask import Flask
from flask_cors import CORS
import requests
from flask import redirect
# 改密
# from flask_wtf import FlaskForm
# from wtforms import StringField, PasswordField, SubmitField
# from wtforms.validators import DataRequired, Length, EqualTo
app = Flask(__name__)
# CORS(app, resources={r"/*": {"origins": "http://127.0.0.1:5500"}})
app.config['MYSQL_HOST'] = 'localhost'
app.config['MYSQL_USER'] = 'root'
app.config['MYSQL_PASSWORD'] = '123456'
app.config['MYSQL_DB'] = 'topic'
mysql = MySQL(app)
# 区分大小写，且users位置也区分
users = []
# 钩子函数，每次打开第一件做的事情
@app.before_first_request
def load_users():
cursor = mysql.connection.cursor()
cursor.execute('SELECT * FROM users')
rows = cursor.fetchall()
# users = []
for row in rows:
user = {'id': row[0], 'username': row[1], 'password': row[2]}
users.append(user)
cursor.close()
# app.config['USERS'] = users
# register.py['users'] = users
@app.route('/', methods=['GET', 'POST'])
def index():
return render_template('index.html')
# 字典
users = [{'username': 'admin', 'password': 'asd123'}] # https://blog.csdn.net/weixin_36380516/article/details/80008602
@app.route("/register", methods=['GET', 'POST'])
def register():
if request.method == 'POST': # 为什么要写这个if判断是否POST方式。如果不加的话可能报错......因为网页跳转也在这个路由上实现
username = request.form.get("username") # POST方式
password = request.form.get("password")
repassword = request.form.get('repassword')
# 连接数据库
cursor = mysql.connection.cursor()
# 判断有无重名
for i in users:
if i['username'] == username:
return '用户名已被注册'
# 判断俩次密码是否一致
if password == repassword and password != '' and username != '':
user = {'username': username, 'password': password}
# 写入show
users.append(user)
# 下面三句是把信息写入数据库
cursor.execute('INSERT INTO users (username, password) VALUES (%s, %s)', (username, password))
mysql.connection.commit()
cursor.close()
return "注册成功"
return "俩次密码不一致，或未输入密码"
return render_template('register.html')
# @app.route('/search')
# def search():
# for i in users:
# if i['username'] == 'aa':
# return '用户名已被注册'
# return "未注册"
# @app.route('/weiboindex.html')
# def weiboindex():
# print(conn)
# # 从数据库中读取数据
# cursor = conn.cursor()
# cursor.execute('SELECT * FROM weibo')
# data = cursor.fetchall()
# # print(data)
# # # 获取查询结果
# cursor.close()
# # # 将数据传递给前台模板
# # return data[0]
# return render_template('weiboindex.html', data=data)
@app.route('/login', methods=['POST', 'GET'])
def login():
if request.method == 'POST':
l_username = request.form.get("l_username")
l_password = request.form.get("l_password")
# try:
for i in users:
# if i['username'] != l_username:
# return "用户名未注册"
if i['username'] == l_username and i['password'] == l_password:
# return "登录成功"
print("login")
# return redirect('http://127.0.0.1:5000/weiboindex.html')
return render_template('weiboindex.html')
# return render_template('http://127.0.0.1:5000 ') #TemplateNotFound
if i['username'] == l_username and i['password'] != l_password:
return "密码输入错误"
# print(i, len(users))
return "用户名未注册"
return render_template('login.html')
@app.route('/show')
def show():
print(users[0]['username'])
json_str = json.dumps(users) # 将python数据结构转换为JSON
print(json_str)
return json_str
CORS(app, resources={r"/*": {"origins": "http://127.0.0.1:5500"}})
conn = pymysql.connect(host='localhost',user='root',password='123456',database='topic',charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor )
if conn:
print('数据库连接成功！')
else:
print('数据库连接失败！')
app2 = Flask(__name__)
@app2.route('/weiboindex.html')
def weiboindex():
print(conn)
# 从数据库中读取数据
cursor = conn.cursor()
cursor.execute('SELECT * FROM weibo')
data = cursor.fetchall()
# print(data)
# # 获取查询结果
cursor.close()
# # 将数据传递给前台模板
# return data[0]
return render_template('weiboindex.html', data=data)
# resp = jsonify({'message': 'Welcome to somepage!'})
# resp.headers['Access-Control-Allow-Origin'] = '*'
# return resp
if __name__ == '__main__':
app.run(debug=True, port=8000,use_reloader=False)
app2.run(debug=True, port=5000,use_reloader=False)
# app.run(debug=True, port=8000,use_reloader=False)
# if request.method == 'POST':
# username = request.form['username']
# password = request.form['password']
# cursor = mysql.connection.cursor()
# cursor.execute('INSERT INTO users (username, password) VALUES (%s, %s)', (username, password))
# mysql.connection.commit()
# cursor.close()
# return 'Successfully registered!'
# else:
# return render_template('register.html')
# 改密
# @app.route('/change_password', methods=['GET', 'POST'])
# @login_required
# def change_password():
# form = ChangePasswordForm()
# if form.validate_on_submit():
# if current_user.check_password(form.old_password.data):
# current_user.set_password(form.new_password.data)
# db.session.commit()
# return 'Your password has been updated.'
# else:
# return 'Invalid old password'
# return render_template('change_password.html', form=form)
# class User(UserMixin, db.Model):
# __tablename__ = 'users'
# id = db.Column(db.Integer, primary_key=True)
# username = db.Column(db.String(64), index=True, unique=True)
# password_hash = db.Column(db.String(128))
# def set_password(self, password):
# self.password_hash = generate_password_hash(password)
# def check_password(self, password):
# return check_password_hash(self.password_hash, password)
# 数据库改
# cursor = mysql.connection.cursor()
# cursor.execute('UPDATE users SET username = %s, password = %s WHERE id = %s', (username, password, user_id))
# mysql.connection.commit()
# cursor.close()
# 登出
# Flask-Login提供的 “logout_user” 函数，用户 ID 存储在 Flask-Login提供的 “current_user”，登出既删current_user
# @app.route('/logout')
# @login_required
# def logout():
# logout_user()
# return '你已登出.'
# 改密
# class ChangePasswordForm(FlaskForm):
# old_password = PasswordField('Old Password', validators=[DataRequired()])
# new_password = PasswordField('New Password', validators=[
# DataRequired(),
# Length(min=6, message='Password must be at least 6 characters.'),
# EqualTo('confirm_password', message='Passwords must match.')
# ])
# confirm_password = PasswordField('Confirm Password', validators=[DataRequired()])
# submit = SubmitField('Change Password')