利用.htaccess启动Gzip网页压缩
此方法是通过Apache的Enabling Compression，在你服务器站点的根目录下将.htaccess文件下载回来，要是没有就vim创建一个.htaccess文件中写入，然后储存上传。
<IfModule mod_deflate.c>
# Insert filters
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
AddOutputFilterByType DEFLATE application/x-httpd-php
AddOutputFilterByType DEFLATE application/x-httpd-fastphp
AddOutputFilterByType DEFLATE image/svg+xml
# Drop problematic browsers
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSI[E]!no-gzip !gzip-only-text/html
# Make sure proxies don‘t deliver the wrong content
Header append Vary User-Agent env=!dont-vary
</IfModule>
测试是否开启gzip压缩的站点
http://tool.chinaz.com/Gzips/Default.aspx
http://gzip.zzbaike.com/
