1，在protected/config/main.php目录下修改如下目录
'modules'=>array(
// uncomment the following to enable the Gii tool
'gii'=>array(
'class'=>'system.gii.GiiModule',
'password'=>'xw0987',
// If removed, Gii defaults to localhost only. Edit carefully to taste.
'ipFilters'=>array('127.0.0.1','::1'),
),
),
2，通过路由访问 创建后台模块
“http://localhost/YII/shop/index.php?r=gii/default/login”
3,键入密码
4生成模块
5，点击Preview预览 勾选要生成的模块
6.generate生成
7.查看项目列表多出bgModel
创建成功