python查询MySQL将数据写入Excel

CREATE TABLE `users` (
 `id` bigint(20) NOT NULL AUTO_INCREMENT,
 `username` varchar(50) COLLATE utf8mb4_bin NOT NULL COMMENT '用户名',
 `password` varchar(255) CHARACTER SET utf8mb4 DEFAULT NULL COMMENT '密码',
 `phone` varchar(20) CHARACTER SET utf8mb4 DEFAULT NULL COMMENT '手机号',
 `email` varchar(255) CHARACTER SET utf8mb4 DEFAULT NULL COMMENT '邮箱',
 `create_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
 PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;

INSERT INTO `test`.`users` (`id`, `username`, `password`, `phone`, `email`, `create_time`) VALUES ('1', 'xiao', '123', '12345678910', '[email protected]', '2020-04-10 01:22:07');
INSERT INTO `test`.`users` (`id`, `username`, `password`, `phone`, `email`, `create_time`) VALUES ('2', 'zhang', '123', '12345678910', '[email protected]', '2020-04-10 01:22:07');
INSERT INTO `test`.`users` (`id`, `username`, `password`, `phone`, `email`, `create_time`) VALUES ('3', 'lisi', '123', '12345678910', '[email protected]', '2020-04-10 01:22:07');

pip3 install xlwt pymysql

#!/usr/bin/env python3
# coding: utf-8
import os
import xlwt
import pymysql
import datetime

class MysqlToExcel(<strong style="color:transparent">本文来源gaodai#ma#com搞@@代~&码*网/</strong>object):
  def __init__(self):
    self.host = '10.212.21.92'
    self.user = 'root'
    self.passwd = 'abcd1234'
    self.db_name = 'test'
    self.port = 3306
    self.file_name = 'data.xls'

  def get_query_results(self):
    sql = "select * from test.users"

    conn = pymysql.connect(
      host=self.host,
      user=self.user,
      passwd=self.passwd,
      port=self.port,
      database=self.db_name,
      charset='utf8',
      cursorclass=pymysql.cursors.DictCursor
    )
    cur = conn.cursor() # 创建游标
    cur.execute(sql) # 执行sql命令
    result = cur.fetchall() # 获取执行的返回结果
    # print(result)
    cur.close()
    conn.close() # 关闭mysql 连接
    return result

  def generate_table(self):
    """
    生成excel表格
    :return:
    """
    # 删除已存在的文件
    if os.path.exists(self.file_name):
      os.remove(self.file_name)

    result = self.get_query_results()
    # print(result)
    if not result:
      print("查询结果为空")
      return False

    # 创建excel对象
    f = xlwt.Workbook()
    sheet1 = f.add_sheet('Sheet1', cell_overwrite_ok=True)

    # 列字段
    column_names = ['id','username','password','phone','email']

    # 写第一行，也就是列所在的行
    for i in range(0, len(column_names)):
      sheet1.write(0, i, column_names[i])

    # 写入多行
    num = 0 # 计数器
    for i in result:
      sheet1.write(num + 1, 0, i['id'])
      sheet1.write(num + 1, 1, i['username'])
      sheet1.write(num + 1, 2, i['password'])
      sheet1.write(num + 1, 3, i['phone'])
      sheet1.write(num + 1, 4, i['email'])
      # 日期转换为字符串
      value = i['create_time'].strftime('%Y-%m-%d %H:%M:%S')
      sheet1.write(num + 1, 5, value)

      num += 1 # 自增1

    # 保存文件
    f.save(self.file_name)

    # 判断文件是否存在
    if not os.path.exists(self.file_name):
      print("生成excel失败")
      return False

    print("生成excel成功")
    return True

if __name__ == '__main__':
  MysqlToExcel().generate_table()