配置虚拟目录
1、先打开apache的配置文件httpd.conf,
搜索关键词:vhost,找到所在行并去掉#Include conf/extra/httpd-vhosts.conf前面的#号，
PHPIniDir d:/wamp/bin/php/php5.5.12前面的#号也去掉；
LoadModule rewrite_module modules/mod_rewrite.so前面的#号也去掉；
2、打开apache的apache/conf/extra下的次配置文件httpd-vhosts.conf
将此文件下的原有的扩展配置文件(如下):删除一个或两个
<VirtualHost *:80>
    ServerAdmin webmaster@dummy-host.example.com
    DocumentRoot "c:/Apache24/docs/dummy-host.example.com"
    ServerName dummy-host.example.com
    ServerAlias www.dummy-host.example.com
    ErrorLog "logs/dummy-host.example.com-error.log"
    CustomLog "logs/dummy-host.example.com-access.log" common
</VirtualHost>

3、在httpd-vhosts.conf文件的末尾添加上:
<VirtualHost *:80>
    DocumentRoot d:/wamp/website/a.com
    ServerName www.a.com
    <Directory "d:/wamp/website/a.com">
        Options Indexes FollowSymLinks
        AllowOverride None
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>
4、打开在c:/WINDOWS/system32/drivers/etc中的hosts文件中加上如下的内容
127.0.0.1    www.a.com
5、这样我们就配置好了名为wamp的虚拟主机,重启一下我们在浏览器中输入wamp就可以查看到d:/wamp/www目录下的内容了!!
6、但是这样localhost访问则出现了问题,这时需要我们,同样将localhost设为虚拟主机
<VirtualHost *:80>
    DocumentRoot d:/wamp/www
    ServerName localhost
    <Directory "d:/wamp/www">
        Options Indexes FollowSymLinks
        AllowOverride None
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>