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我已经使用 angularjs 开发了单页应用程序。Angularjs 源存储在 amazon s3 上。对于 SEO 和社交分享，我使用了 prerender.io。我的网络服务器是包含 amazon S3 的 nginx。我认为我的 nginx.conf 配置得很好。但是，当尝试在 facebook 上分享时，会出现错误的结果，因为 angular 中的绑定模型没有被动态替换。我检查了http://prerender.io上的页面缓存是否成功，但 facebook-shared 结果显示好像绑定模型没有被替换。我想知道为什么不。请帮帮我！！我的 nginx 的设置如下。

http{

# configuration of the web application server
server {
    ......
}

server {
    listen      80;
    server_name example.com;
    root        /;

    location / {
        try_files $uri @prerender;
    }

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

        set $prerender 0;        
        if($http_user_agent ~* 
         "baiduspider|twitterbot|facebookexternalhit|rogerbot|linkedinbot|embedly|quora >               link preview|showyoubot|outbrain|pinterest|slackbot") {
            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)")
        {
            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://example.s3-website-ap-
                    northeast1.amazonaws.com$request_uri? break;
            proxy_pass http://$prerender;
        }
        if ($prerender = 0) {
            proxy_pass $scheme://example.s3-website-ap-northeast-1.amazonaws.com;
        }
    }
} }
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