将文本数据插入数据库

两文本文件为day10面向对象练习案例


将data_define.py文件复制过来（导入失败，疑惑）

新建数据库，建表orders

-- CREATE DATABASE py_sql charset utf8;use py_sql;create table orders(order_date date,order_id VARCHAR(255),money int,province VARCHAR(10));

导包

data_define无法导入啊啊啊啊

# from day10.practice.file_define import FileReader, JsonFileReader, TextFileReader
# from day10.practice.data_define import Record
# from day10.practice import data_define
from day10.practice import file_definefrom pymysql import Connection

数据准备

text_file_reader = file_define.TextFileReader("D:/2011年1月销售数据.txt")
json_file_reader = file_define.JsonFileReader("D:/2011年2月销售数据JSON.txt")data_1 = text_file_reader.read_data()
data_2 = json_file_reader.read_data()
data_1.extend(data_2)print(data_1)
for record in data_1:print(record)

构建mysql连接对象

conn = Connection(host="localhost",port=3306,autocommit=True,user="root",password="****"
)

获取游标对象

cursor = conn.cursor()

选择数据库

conn.select_db("py_sql")

组织SQL语句!!!注意此处格式化写法 f"字符串str字符串{变量}"

# 组织SQL语句!!!注意此处格式化写法  f"字符串str字符串{变量}"
for record in data_1:sql = f"insert into orders(order_date,order_id,money,province) " \f"values('{record.date}','{record.order_id}',{record.money},'{record.province}') "# sql语句：insert into orders(order_date,order_id,money,province) values('2011-02-28','5b03fc64-cb93-4735-81cc-a08315f8d014',593,'山西省')print(sql)

执行插入数据操作，已自动确认

    cursor.execute(sql)

关闭数据库

# 关闭数据库

PS：完整代码

# from day10.practice.file_define import FileReader, JsonFileReader, TextFileReader
# from day10.practice.data_define import Record
# from day10.practice import data_define
from day10.practice import file_definefrom pymysql import Connectiontext_file_reader = file_define.TextFileReader("D:/2011年1月销售数据.txt")
json_file_reader = file_define.JsonFileReader("D:/2011年2月销售数据JSON.txt")data_1 = text_file_reader.read_data()
data_2 = json_file_reader.read_data()
data_1.extend(data_2)# print(data_1)
# for record in data_1:
#     print(record)# 构建mysql连接对象
conn = Connection(host="localhost",port=3306,autocommit=True,user="root",password="####"
)# 获取游标对象
cursor = conn.cursor()
# 选择数据库
conn.select_db("py_sql")
# 组织SQL语句!!!注意此处格式化写法  f"字符串str字符串{变量}"
for record in data_1:sql = f"insert into orders(order_date,order_id,money,province) " \f"values('{record.date}','{record.order_id}',{record.money},'{record.province}') "# sql语句：insert into orders(order_date,order_id,money,province) values('2011-02-28','5b03fc64-cb93-4735-81cc-a08315f8d014',593,'山西省')# print(sql)# 执行插入数据操作，已自动确认cursor.execute(sql)# 关闭数据库

data_define

"""
数据定义的类
"""class Record:def __init__(self, date, order_id, money, province):self.date = date  # 日期self.order_id = order_id  # 订单idself.money = money  # 订单金额self.province = province  # 省份# 魔术方法，构建对象时自动运行def __str__(self):return f"{self.date},{self.order_id},{self.money},{self.province}"

file_define

"""
文件相关的类定义
"""
import jsonfrom data_define import Recordclass FileReader:def read_data(self) -> list[Record]:# 读文件数据，将读到数据转为Record对象，将其封装到list内返回passclass TextFileReader(FileReader):# 构造方法定义成员变量def __init__(self, path):self.path = path  # 文件路径# 复写（实现抽象方法）def read_data(self) -> list[Record]:f = open(self.path, "r", encoding="utf-8")record_list: list[Record] = []  # 类型注解# lines = f.readlines()# print(lines)for line in f.readlines():# print(line)line = line.strip()  # 去除首尾空格换行符data_list = line.split(',')# print(data_list)# 将数据转为Record类对象  ['2011-01-01', '4b34218c-9f37-4e66-b33e-327ecd5fb897', '1689', '湖南省']record = Record(data_list[0], data_list[1], int(data_list[2]), data_list[3])record_list.append(record)# 关闭文件流f.close()# print(record_list)return record_listclass JsonFileReader(FileReader):# 构造方法定义成员变量def __init__(self, path):self.path = path  # 文件路径def read_data(self) -> list[Record]:f = open(self.path, "r", encoding="utf-8")  # 成员变量勿忘selfrecord_list: list[Record] = list()  # 类型注解# print(f.read())for line in f:data_dict = json.loads(line)# print(data_dict)# 将数据转为Record类对象"""{'date': '2011-02-01', 'order_id': 'caf99222-53d6-427b-925d-3187fc71a86a', 'money': 1805, 'province': '江西省'}"""record = Record(data_dict["date"], data_dict["order_id"], int(data_dict["money"]), data_dict["province"])record_list.append(record)# 关闭文件流f.close()# print(record_list)return record_listif __name__ == '__main__':text_file_reader = TextFileReader("D:/2011年1月销售数据.txt")  # 传入形参pathlist_1 = text_file_reader.read_data()json_file_reader = JsonFileReader("D:/2011年2月销售数据JSON.txt")list_2 = json_file_reader.read_data()print(list_1)  # [<data_define.Record object at 0x0000020F03DD32B0>,.....]print(list_2)  # 直接打印，显示内存地址# 一月数据for l in list_1:print(l)# 二月数据for l in list_2:print(l)