1.确定以下两个模块是否加载，未加载则加载模块
LoadModule headers_module modules/mod_headers.so
LoadModule deflate_module modules/mod_deflate.so
2.在Apache配置文件在VirtualHost中添加 如下
<VirtualHost  *:80>
    DocumentRoot /home/htdocs
    ServerName www.XXXXXXXXXX.com

    AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/x-javascript
    BrowserMatch ^Mozilla/4 gzip-only-text/html
    BrowserMatch ^Mozilla/4\.0[678] no-gzip
    BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
    SetEnvIfNoCase Request_URI \\.(?:gif|jpe?g|png)$ no-gzip dont-vary
    SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
    SetEnvIfNoCase Request_URI .(?:pdf|mov|avi|mp3|mp4|rm)$ no-gzip dont-vary

</VirtualHost>

3.添加完成重启Apache服务
service httpd restart