504html页面
回头把一些默认的错误页面加进某些路由里，糊弄爬虫
504
<html><head><title>504 Gateway Time-out</title></head>
<body bgcolor="white">
<h1>504 Gateway Time-out</h1>
<p>The gateway did not receive a timely response from the upstream server or application.</p><hr>Powered by Tengine
</body></html>
502
<html><head></head><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
</body></html>
默认nginx页面
<html><head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body></html>
