静态编译js的prerender只得到<html><head></head><body></body></html>答案

【问题标题】：prerender of static compiled js only get <html><head></head><body></body></html>静态编译js的prerender只得到<html><head></head><body></body></html>
【发布时间】：2019-01-06 03:24:26
【问题描述】：

我有一个嵌入了已编译 gzjs 文件的静态 html 页面。使用了prerender，我的nginx文件是：

 server {
    listen 80;
    listen [::]:80;
    server_name www.example.com;
    expires $expires;

    root /usr/local/www/nginx-dist;

    index index.html index.htm;

    #proxy_set_header   Host $http_host;

    location / {
    try_files $uri @prerender;
}

    location @prerender {
proxy_set_header X-Prerender-Token MyToken;

set $prerender 0;
if ($http_user_agent ~* "googlebot|bingbot|googlebot-mobile|yandex|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|svg|eot)") {
    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) {
        rewrite .* /index.html break;
    }
  }
}

只得到 301 和

<html><head></head><body></body></html>

通过 googlebot 获取。

根据 prerender.io，“您需要切换到允许您启动多个进程或使用非阻塞 I/O 的服务器（如 Unicorn 或 Puma），以便在 Prerender 尝试渲染时不会出现死锁您的页面动态", 谁能建议我的情况如何做？

谢谢。

【问题讨论】：

这个问题你解决了吗？我有同样的问题，但还没有找到解决方案。
是的，解决了，在 support@prerender.io 的帮助下，我的最终 nginx 文件在下面

标签： nginx prerender

【解决方案1】：

如果您使用的是 nginx 配置，则无需切换到 Unicorn/Puma，因为它们是 Rails 服务器。

当您发现此问题时，能否将您正在测试的 URL 发送给我们的支持团队？我们将能够帮助您调查并确保一切正常。只需发送电子邮件至 support@prerender.io，我们将很乐意为您提供帮助！

【讨论】：

【解决方案2】：

在官方支持的帮助下，我最终的 nginx 文件是：

 server {
listen 80;
listen [::]:80;
server_name www.YOURSITE.com;
expires $expires;

root /usr/local/www/nginx-dist;

index index.html index.htm;

proxy_set_header   Host $http_host;

location / {
    if ($uri ~* "\.(php|jsp)") {
        return 404;
    }

    proxy_set_header X-Prerender-Token YOURTOKEN;

    set $prerender 0;
    if ($http_user_agent ~* "googlebot|Googlebot-Image|googlebot-mobile|Google-Structured-Data-Testing-Tool|AdsBot-Google-Mobile|Mediapartners-Google|bingbot|MSNBot|msnbot-media|AdsBot-Google-Mobile|yandex|baiduspider|Baiduspider-mobile|Baiduspider-image|Baiduspider-video|Baiduspider-news|Baiduspider-favo|Baiduspider-cpro|twitterbot|facebot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora link preview|showyoubot|outbrain|pinterest|slackbot|tumblr|xml-sitemaps|vkShare|W3C_Validator|redditbot|Slack-ImgProxy|Slackbot-LinkExpanding|Site
    Analyzer|SiteAnalyzerBot|Viber|Whatsapp|Telegram|Slurp|Slurp China|Discordbot|Sogou web spider|Sogou Pic Spider|Sogou Push Spider|YoudaoBot|YoudaoFeedFetcher|Sosospider|Sosoimagespider|360Spider|Speedy Spider|HuaweiSymantecSpider|iaskspider") {
    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|svg|eot)") {
        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 $prerender "service.prerender.io";
        rewrite .* /https://$server_name$request_uri? break;
        proxy_pass http://$prerender;
    }

   try_files $uri $uri/ /index.html;
}

}

【讨论】：