flask-mysql链接失败：pymysql.err.OperationalError: (1045, “Access denied for user ‘14784‘@‘localhost‘ (us

错误写法

from flaskext.mysql import MySQL
app = Flask(__name__)
app.config['SECRET_KEY'] = os.urandom(24)
#配置 MySQL 连接
 app.config['MYSQL_HOST'] = 'localhost'
 app.config['MYSQL_USER'] = ''
 app.config['MYSQL_PASSWORD'] = ''  # 这里替换为你的 MySQL 密码
 app.config['MYSQL_DB'] = ''

mysql = MySQL(app, host='localhost', user="root",password="123456",db="mysql", autocommit=True)


mysql.init_app(app)

这个是正确写法

from flask import Flask, render_template, request, redirect, url_for, flash
from flaskext.mysql import MySQL
from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField
from wtforms.validators import DataRequired, EqualTo
import os
app = Flask(__name__)
app.config['SECRET_KEY'] = os.urandom(24)
# 配置 MySQL 连接
# app.config['MYSQL_HOST'] = 'localhost'
# app.config['MYSQL_USER'] = ''
# app.config['MYSQL_PASSWORD'] = ''  # 这里替换为你的 MySQL 密码
# app.config['MYSQL_DB'] = ''
mysql = MySQL(app, host='localhost', user="root",password="123456",db="mysql", autocommit=True)
mysql.init_app(app)