前提
CentOS下Apache默认网站根目录为/var/www/html,假如我默认存了一个CI项目在html文件夹里，同时服务器的外网IP为ExampleIp,因为使用的是MVC框架，Apache需开启重定向功能。
方法如下
/etc/httpd/conf/httpd.conf文件配置如下：
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DocumentRoot "/var/www/html/CI"
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<Directory />
Options FollowSymLinks
AllowOverride All
</Directory>
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<Directory "/var/www/html/CI">
#
# Possible values for the Options directive are "None", "All",
# or any combination of:
# Indexes Includes FollowSymLinks SymLinksifOwnerMatch ExecCGI MultiViews
#
# Note that "MultiViews" must be named *explicitly* --- "Options All"
# doesn't give it to you.
#
# The Options directive is both complicated and important. Please see
# http://httpd.apache.org/docs/2.2/mod/core.html#options
# for more information.
#
Options Indexes FollowSymLinks
#
# AllowOverride controls what directives may be placed in .htaccess files.
# It can be "All", "None", or any combination of the keywords:
# Options FileInfo AuthConfig Limit
#
AllowOverride All
#
# Controls who can get stuff from this server.
#
Order allow,deny
Allow from all
</Directory>
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配置完使用“service httpd restart”重启Apache,那么直接在浏览器里输入http://ExampleIp,就直接映射到/var/www/html/CI文件夹里了
1、配置多域名映射。假设需要映射www.website1.com和www.website1.com这两个域名，在文档httpd.conf最后添加
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NameVirtualHost *:80
<VirtualHost *:80>
DocumentRoot /var/www/html/website1
ServerName http://www.website1.com
</Virtualhost>
<Directory "/var/www/html/website1">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
<VirtualHost *:80>
DocumentRoot /var/www/html/website1
ServerName http://website1.com
</Virtualhost>
<Directory "/var/www/html/website1">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
<VirtualHost *:80>
DocumentRoot /var/www/html/website2
ServerName http://www.website2.com
</Virtualhost>
<Directory "/var/www/html/website2">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
<VirtualHost *:80>
DocumentRoot /var/www/html/website2
ServerName http://website2.com
</Virtualhost>
<Directory "/var/www/html/website2">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
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website1和website2为工程目录.配置完使用“service httpd restart”重启Apache
2、配置多端口映射。
2.2、首先需要监听端口，在文档httpd.conf的Listen 80下添加需要监听的端口，举例为8080
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Listen 80
Listen 8080
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2.2、在文档最后添加端口映射功能
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<VirtualHost ExampleIp:8080>
DocumentRoot /var/www/html/website3
ServerName ExampleIp:8080
</VirtualHost>
<Directory "/var/www/html/website3">
Options Indexes FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
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website3为工程目录.配置完使用“service httpd restart”重启Apache
总结
