flask 操作mysql的两种方式-sql操作

flask 操作mysql的两种方式-sql操作

一、用常规的sql语句操作
# coding=utf-8
# model.py

import MySQLdb

def get_conn():

    conn = MySQLdb.connect("localhost", "root", "root@123", "jike")
    return conn

class User(object):

    def __init__(self, user_id, user_name):
        self.user_id = user_id
        self.user_name = user_name

    def save(self):
        conn = get_conn()
        cursor = conn.cursor()
        sql = "insert into user (user_id, user_name) VALUES (%s, %s)"
        cursor.execute(sql, (self.user_id, self.user_name))
        conn.commit()
        cursor.close()
        conn.close()

    @staticmethod
    def query_all():
        conn = get_conn()
        cursor = conn.cursor()
        sql = "select * from user"
        cursor.execute(sql)
        rows = cursor.fetchall()
        users = []
        for row in rows:
            user = User(row[0], row[1])
            users.append(user)

        conn.commit()
        cursor.close()
        conn.close()
        return users

    def __str__(self):
        return "id:{id}-name:{name}".format(id = self.user_id, name = self.user_name)

if __name__ == "__main__":
    user = User(1, "yaoming")
    user.save()

#coding=utf-8
# app.py

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "hello world"

if __name__ == "__main__":
    app.run()

# coding=utf-8
# manage.py

from flask_script import Manager
from app import app
from model import User

manager = Manager(app)

@manager.command
def save():
    user = User(2, "jams")
    user.save()

@manager.command
def query_all():
    users = User.query_all()
    for user in users:
        print user

if __name__ == "__main__":
    manager.run()

#表结构
CREATE DATABASE IF NOT EXISTS `jikexueyuan` DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

CREATE TABLE `jikexueyuan`.`user`(
        `user_id` INT NOT NULL,
        `user_name` VARCHAR(45) NULL,
        PRIMARY KEY (`user_id`))
ENGINE = INNODB;