今天在新的linux上跑原来的代码，使用的虚拟主机的模式进行操作。几个相关的网站放在一个文件里，想法是通过网站列出的目录进行相应的网站进行操作。一切设置完成后，在浏览器中运行出现在You don't have permission to access / on this server. 提示。查了一下apache手册找到问题所在处。这里定义了默认对网站根的访问权限。
# Each directory to which Apache has access can be configured with respect
# to which services and features are allowed and/or disabled in that
# directory (and its subdirectories).
#
# First, we configure the "default" to be a very restrictive set of
# features.
#
<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
</Directory>
# to which services and features are allowed and/or disabled in that
# directory (and its subdirectories).
#
# First, we configure the "default" to be a very restrictive set of
# features.
#
<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
</Directory>
这里改成
<Directory />
Options Indexes FollowSymLinks
AllowOverride None
</Directory>
Options Indexes FollowSymLinks
AllowOverride None
</Directory>
问题解决