nginx开启gzip压缩

nginx.conf开启gzip压缩功能，在http{中}添加如下语句，针对静态资源压缩

gzip on;
gzip_http_version 1.1;
gzip_comp_level 4;
gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;

#重载nginx
nginx -s reload