使用Python3导出MySQL查询数据

整理个Python3导出MySQL查询数据d的脚本。

Python依赖包：

pymysql
xlwt

Python脚本：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# =============================================================================
#     FileName:
#         Desc:
#       Author:
#        Email:
#     HomePage:
#      Version:
#   LastChange:
#      History:
# =============================================================================
import pymysql
import traceback
import logging
import xlwt
import datetime

logger = logging.getLogger(__name__)

class MySQLServer(object):
    def __init__(self, mysql_host,
                 mysql_user,
                 mysql_password,
                 mysql_port=3306,
                 database_name="mysql",
                 mysql_charset="utf8",
                 connect_timeout=60):
        self.mysql_host = mysql_host
        self.mysql_user = mysql_user
        self.mysql_password = mysql_password
        self.mysql_port = mysql_port
        self.connect_timeout = connect_timeout
        self.mysql_charset = mysql_charset
        self.database_name = database_name

    def get_connection(self, return_dict=False):
        """
        获取当前服务器的MySQL连接
        :return:
        """
        if return_dict:
            conn = pymysql.connect(
                host=self.mysql_host,
                user=self.mysql_user,
                passwd=self.mysql_password,
                port=self.mysql_port,
                connect_timeout=self.connect_timeout,
                charset=self.mysql_charset,
                db=self.database_name,
                cursorclass=pymysql.cursors.DictCursor
            )
        else:
            conn = pymysql.connect(
                host=self.mysql_host,
                user=self.mysql_user,
                passwd=self.mysql_password,
                port=self.mysql_port,
                connect_timeout=self.connect_timeout,
                charset=self.mysql_charset,
                db=self.database_name,
                cursorclass=pymysql.cursors.Cursor
            )

        return conn

    def mysql_exec(self, mysql_script, mysql_paras=None):
        conn = None
        cursor = None
        try:
            message = "在服务器{0}上执行脚本:{1},参数为:{2}".format(
                self.mysql_host, mysql_script, str(mysql_paras))
            logger.debug(message)
            conn = self.get_connection()
            cursor = conn.cursor()
            if mysql_paras is not None:
                cursor.execute(mysql_script, mysql_paras)
            else:
                cursor.execute(mysql_script)
            conn.commit()
        except Exception as ex:
            warning_message = """
            execute script:{mysql_script}
            execute paras:{mysql_paras},
            execute exception:{mysql_exception}
            execute traceback:{mysql_traceback}
            """.format(
                mysql_script=mysql_script,
                mysql_paras=str(mysql_paras),
                mysql_exception=str(ex),
                mysql_traceback=traceback.format_exc()
            )
            logger.warning(warning_message)
            raise Exception(str(ex))
        finally:
            if cursor is not None:
                cursor.close()
            if conn is not None:
                conn.close()

    def mysql_exec_many(self, script_items):
        conn = None
        cursor = None
        try:
            conn = self.get_connection()
            cursor = conn.cursor()
            for script_item in script_items:
                sql_script, sql_paras = script_item
                message = "在服务器{0}上执行脚本:{1},参数为:{2}".format(
                    self.mysql_host, sql_script, str(sql_paras))
                logger.debug(message)
                if sql_paras is not None:
                    cursor.execute(sql_script, sql_paras)
                else:
                    cursor.execute(sql_script)
            conn.commit()
        except Exception as ex:
            logger.warning("execute exception:{0} \n {1}".format(str(ex), traceback.format_exc()))
            raise Exception(str(ex))
        finally:
            if cursor is not None:
                cursor.close()
            if conn is not None:
                conn.close()

    def mysql_query(self, mysql_script, mysql_paras=None, return_dict=False):
        conn = None
        cursor = None
        try:
            message = "在服务器{0}上执行脚本:{1},参数为:{2}".format(
                self.mysql_host, mysql_script, str(mysql_paras))
            logger.debug(message)
            conn = self.get_connection(return_dict=return_dict)
            cursor = conn.cursor()
            if mysql_paras is not None:
                cursor.execute(mysql_script, mysql_paras)
            else:
                cursor.execute(mysql_script)
            exec_result = cursor.fetchall()
            conn.commit()
            return exec_result
        except Exception as ex:
            warning_message = """
execute script:{mysql_script}
execute paras:{mysql_paras},
execute exception:{mysql_exception}
execute traceback:{mysql_traceback}
""".format(
                mysql_script=mysql_script,
                mysql_paras=str(mysql_paras),
                mysql_exception=str(ex),
                mysql_traceback=traceback.format_exc()
            )
            logger.warning(warning_message)
            raise Exception(str(ex))
        finally:
            if cursor is not None:
                cursor.close()
            if conn is not None:
                conn.close()

class ExeclExporter(object):
    @classmethod
    def export_excel(cls, file_path, row_items):
        try:
            work_book = xlwt.Workbook()
            work_sheet = work_book.add_sheet('sheet01', cell_overwrite_ok=True)
            column_items = []
            if len(row_items) > 0:
                first_row = row_items[0]
                column_items = list(first_row.keys())
                for column_index in range(0, len(column_items)):
                    column_name = column_items[column_index]
                    work_sheet.write(0, column_index, column_name)
            for row_index in range(1, len(row_items) + 1):
                row_item = row_items[row_index - 1]
                for column_index in range(0, len(column_items)):
                    column_name = column_items[column_index]
                    work_sheet.write(row_index, column_index, row_item[column_name])
            work_book.save(file_path)
        except Exception as ex:
            logger.warning("执行异常,异常信息：{0}\n堆栈信息：{1}".format(
                str(ex),
                traceback.format_exc()
            ))

def export_excel():
    mysql_server = MySQLServer(
        mysql_host="192.168.199.194",
        mysql_port=3306,
        mysql_user='admin',
        mysql_password='admin',
        database_name='demo01',
        mysql_charset='utf8'
    )
    sql_script = """
select * from tb001 limit 10;
"""
    row_items = mysql_server.mysql_query(mysql_script=sql_script, return_dict=True)
    file_path = "./" + datetime.datetime.now().strftime("%Y%m%d%H%M%S.xls")
    ExeclExporter.export_excel(
        file_path=file_path,
        row_items=row_items)

if __name__ == '__main__':
    export_excel()