server {
listen 80;
server_name 47.100.252.XX;
sendfile on;
#charset koi8-r;
access_log /var/log/nginx/host.access.log main;

location ~ .*.(jpg|gif|png)$ {
gzip on;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/git image/png;
root /opt/app/download;
}

location ~ .*.(txt|xml)$ {
gzip on;
gzip_http_version 1.1;
gzip_comp_level 1;
gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/git image/png;
root /opt/app/download;
}
location ~ ^/download {
gzip_static on;
tcp_nopush on;
root /opt/app/download;
}

#error_page  404              /404.html;

# redirect server error pages to the static page /50x.html
#
error_page   500 502 503 504 404  /50x.html;
location = /50x.html {
    root   /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
#    proxy_pass   http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
#    root           html;
#    fastcgi_pass   127.0.0.1:9000;
#    fastcgi_index  index.php;
#    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
#    include        fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
#    deny  all;
#}

}

可以确定是 download 下 也就是 /opt/app/download 下面是有图片的

麻烦老师、同学指导一下 浏览器提示404