@echo off
rem 当前路径切换到备份数据库目录
cd D:\wamp\www\databases
rem 按照时间新建备份目录：格式为年\月\日
md %date:~0,4%\%date:~5,2%\%date:~8,2%
rem 设置临时变量：备份目录
set backuppath=D:\wamp\www\databases\%date:~0,4%\%date:~5,2%\%date:~8,2%
rem 当前路径切换到数据库目录
cd D:\wamp\bin\mysql\mysql5.5.20\bin
rem 运行备份数据库命令
mysqldump -uroot -proot shanghai > %backuppath%\shanghai.sql
rem 以下两条命令为：当前目录切换到压缩程序目录
cd C:\Program Files\WinRAR
C:
rem 压缩刚才备份的sql脚本
WinRAR a %backuppath%\shanghai.rar %backuppath%\shanghai.sql
rem 以下两条命令为：当前目录切回到数据库备份目录
d:
cd %backuppath%
rem 删除数据库备份文件，只保留压缩文件
del shanghai.sql