方法很簡單：
1、修改 /etc/apache2/ports.conf將 NameVirtualHost *:80和Listen 80修改為自己需要的端口，例如：
NameVirtualHost *:1000 Listen 1000
2、修改/etc/apache2/sites-available/default
將第一行的 VirtualHost :80 改為自己需要的端口VirtualHost :1000
3、修改 /etc/init.d/apache2/httpd.conf 添加Servername localhost，否則重啟時會報如下錯誤
* Restarting web server apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ... waiting apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 forServerNam
4.重啟apache

sudo /etc/init.d/apache2 restart

端口修改完畢。apache的端口修改為1000了。