php - mac中laravel框架的public文件夹无法访问？

Mac环境下，用安装包直接布置的laravel，通过浏览器访问laravel文件夹，可以显示文件列表，但浏览器中不显示public文件夹，地址栏直接输入地址./laravel/public/,则会报错：
Forbidden
You don't have permission to access /~jnwb/laravel/public/ on this server.

apache中的rewrite模块已开启。
vhosts.conf配置如下

ServerAdmin webmaster@dummy-host.example.com
DocumentRoot "/usr/docs/dummy-host.example.com"
ServerName dummy-host.example.com
ServerAlias www.dummy-host.example.com
ErrorLog "/private/var/log/apache2/dummy-host.example.com-error_log"
CustomLog "/private/var/log/apache2/dummy-host.example.com-access_log" common

ServerAdmin webmaster@dummy-host2.example.com
DocumentRoot "/usr/docs/dummy-host2.example.com"
ServerName dummy-host2.example.com
ErrorLog "/private/var/log/apache2/dummy-host2.example.com-error_log"
CustomLog "/private/var/log/apache2/dummy-host2.example.com-access_log" common

求助！