mysql数据库导入sql文件时提示“Error Code: 1153 - Got a packet bigger than 'max_allowed_packet' bytes”解决办法

向mysql数据库中导入sql文件时，如果文件过大（几百M），会提示“Error Code: 1153 - Got a packet bigger than 'max_allowed_packet' bytes”

1.查看目前数据库配置

show VARIABLES like '%max_allowed_packet%';
显示如下结果
+--------------------+---------+
| Variable_name      | Value   |
+--------------------+---------+
| max_allowed_packet | 1048576 |
+--------------------+---------+
说明目前的配置是：1048576/1024/1024 = 1M

2.修改my.ini文件中“max_allowed_packet”的值