宝塔nginx配置允许各种文件的下载
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|pdf|doc|docx|xls|xlsx|rar|zip|gz|7z|ppt|pptx|mp3|mp4|avi|mov|wmv)$
{
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';
add_header Access-Control-Expose-Headers 'Content-Disposition';
expires 30d;
error_log /dev/null;
access_log /dev/null;
}在网站的配置文件中，修改原先类似的部分为上面的内容
