我相信prerender 的例子有答案。如果 prerender 设置为 1,它使用 rewrite 然后 proxy_pass。
所以你会改变这个:
if ($prerender = 0) {
rewrite .* /index.html break;
}
对此:
if ($prerender = 0) {
rewrite .* /index.html break;
proxy_pass http://[INTERNAL IP]:[PORT];
}
由于您使用的是 Node 并且不需要为静态文件设置一些东西,因此我会进行进一步的修改。
这是我的最终答案:
server {
listen 80;
server_name example.com;
location / {
try_files $uri @prerender;
}
location @prerender {
#proxy_set_header X-Prerender-Token YOUR_TOKEN;
set $prerender 0;
if ($http_user_agent ~* "baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|vkShare|W3C_Validator") {
set $prerender 1;
}
if ($args ~ "_escaped_fragment_") {
set $prerender 1;
}
if ($http_user_agent ~ "Prerender") {
set $prerender 0;
}
if ($uri ~ "\.(js|css|xml|less|png|jpg|jpeg|gif|pdf|doc|txt|ico|rss|zip|mp3|rar|exe|wmv|doc|avi|ppt|mpg|mpeg|tif|wav|mov|psd|ai|xls|mp4|m4a|swf|dat|dmg|iso|flv|m4v|torrent|ttf|woff)") {
set $prerender 0;
}
#resolve using Google's DNS server to force DNS resolution and prevent caching of IPs
resolver 8.8.8.8;
if ($prerender = 1) {
#setting prerender as a variable forces DNS resolution since nginx caches IPs and doesnt play well with load balancing
set $prerender "service.prerender.io";
rewrite .* /$scheme://$host$request_uri? break;
proxy_pass http://$prerender;
}
if ($prerender = 0) {
proxy_pass http://[INTERNAL IP]:[PORT];
}
}
}
我希望这会有所帮助。我要补充的一件事是我不会使用预渲染引擎。蜘蛛甚至可以索引使用 javascript 和 PDF 的链接和页面。
只是我的两分钱。