找到自己的mysql数据库的安装位置,如下 
C:\Program Files\MySQL\MySQL Server 5.1,在它里面有个的my.ini文件,寻找如下行: 
[mysqld] 
复制代码 代码如下: 
# The TCP/IP Port the MySQL Server will listen on 
port=3306 
#Path to installation directory. All paths are usually resolved relative to this. 
basedir="C:/Program Files/MySQL/MySQL Server 5.1/" 
#Path to the database root 
datadir="C:/ProgramData/MySQL/MySQL Server 5.1/Data/" 
# The default character set that will be used when a new schema or table is