注：使用前请安装flask_sqlalchemy包，由于python-mysql不适用于python3.6，所以我们使用pymysql进行替代
1.flask的app文件中输入以下代码
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| (文件名为：learn_flask_mysql_orm.py)
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config["SQLALCHEMY_DATABASE_URI"]="mysql+pymysql://root:@127.0.0.1:3306/learn_flask_mysql"
db = SQLAlchemy(app)
@app.route('/')
def hello_world():
return 'Hello World!'
if __name__ == '__main__':
app.run()
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2.在flask文件夹中新建一个models.py文件，并输入以下代码
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| from learn_flask_mysql_orm import db
class User(db.Model):
__tablename__ = 'user'
user_id = db.Column(db.INT,primary_key=True)
user_name = db.Column(db.TEXT)
def __init__(self,user_id,user_name):
self.user_id = user_id
self.user_name = user_name
def __str__(self):
return "id:{} name:{}".format(self.user_id,self.user_name)
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3.在flask中新建一个manage.py文件，输入以下代码
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| from flask_script import Manager
from models import User
from learn_flask_mysql_orm import app,db
manager = Manager(app)
@manager.command
def save():
user = User(11,'zhangjia11')
db.session.add(user)
db.session.commit()
@manager.command
def query_all():
users = User.query.all()
for user in users:
print(user)
if __name__ == "__main__":
manager.run()
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之后使用python manage.py save即可保存数据，使用python manage.py qurey_all即可查询数据