我发现当我打开
https://huynhsamha.github.io/crypto/algorithm/sha256时，实际上收到了一个404作为
响应。我认为你在GitHub上使用
404.html来托管SPA的解决方法是问题所在。虽然我们人类可以正确地在浏览器中看到您的应用程序正在提供服务，但Googlebot并不关心，只看响应代码并确认它已经收到了
404。您需要一个不涉及直接使用
404.html作为入口点的不同解决方法。
相反，尝试跟随rafrex提供的这个解决方法，它使用404.html将浏览器重定向到index.html，同时保留原始路由。据称，Googlebot会将其注册为301，而不是404，对于您的情况，这意味着将以下更改添加到您的站点，请注意下面的脚本：<!-- ------Single Page Apps GitHub Pages Workaround------ -->：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Cryptography</title>
<script type="text/javascript">
var segmentCount = 1;
var l = window.location;
l.replace(
l.protocol + '//' + l.hostname + (l.port ? ':' + l.port : '') +
l.pathname.split('/').slice(0, 1 + segmentCount).join('/') + '/?p=/' +
l.pathname.slice(1).split('/').slice(segmentCount).join('/').replace(/&/g, '~and~') +
(l.search ? '&q=' + l.search.slice(1).replace(/&/g, '~and~') : '') +
l.hash
);
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<meta name="description" content="Cryptography Algorithms: Secure Hash Algorithm (sha256, sha512, ...), Message Digest Algorithm (md5, ripemd160), HMAC-SHA, HMAC-MD, pbkdf2, Advanced Encryption Standard (AES), Triple Data Encryption Standard, (TripleDES, DES), RC4, Rabbit, ...">
<meta name="keywords" content="crypto, algorithms, secure hash, sha, sha512, sha256, message digest, md5, hmac-sha, aes, des, tripledes, pbkdf2, rc4, rabbit, encryption, descryption">
<meta name="author" content="huynhsamha">
<meta property="fb:app_id" content="440168923127908">
<meta property="og:url" content="https://huynhsamha.github.io/crypto">
<meta property="og:title" content="Cryptography Algorithms">
<meta property="og:description" content="Cryptography Algorithms: Secure Hash Algorithm (sha256, sha512, ...), Message Digest Algorithm (md5, ripemd160), HMAC-SHA, HMAC-MD, pbkdf2, Advanced Encryption Standard (AES), Triple Data Encryption Standard, (TripleDES, DES), RC4, Rabbit, ...">
<meta property="og:type" content="website">
<meta property="og:image" content="%PUBLIC_URL%/img/main.jpeg">
<meta property="og:site_name" content="Cryptography">
<meta property="og:locale" content="vi_VN">
<meta name="twitter:card" content="summary">
<meta name="twitter:site" content="@huynhsamha">
<meta name="twitter:creator" content="@huynhsamha">
<meta name="twitter:url" content="https://huynhsamha.github.io/crypto">
<meta name="twitter:title" content="Cryptography Algorithms">
<meta name="twitter:description" content="Cryptography Algorithms: Secure Hash Algorithm (sha256, sha512, ...), Message Digest Algorithm (md5, ripemd160), HMAC-SHA, HMAC-MD, pbkdf2, Advanced Encryption Standard (AES), Triple Data Encryption Standard, (TripleDES, DES), RC4, Rabbit, ...">
<meta name="twitter:image:src" content="%PUBLIC_URL%/img/main.jpeg">
<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
<link rel="author" href="//github.com/huynhsamha">
<link rel="canonical" href="//huynhsamha.github.io/crypto">
<link href="//fonts.googleapis.com/css?family=Open+Sans:400,600,700&subset=vietnamese" rel="stylesheet">
<link rel="stylesheet" href="%PUBLIC_URL%/css/bootstrap.min.css">
<link rel="stylesheet" href="%PUBLIC_URL%/lib/font-awesome/css/font-awesome.min.css">
<script type="text/javascript">
(function(l) {
if (l.search) {
var q = {};
l.search.slice(1).split('&').forEach(function(v) {
var a = v.split('=');
q[a[0]] = a.slice(1).join('=').replace(/~and~/g, '&');
});
if (q.p !== undefined) {
window.history.replaceState(null, null,
l.pathname.slice(0, -1) + (q.p || '') +
(q.q ? ('?' + q.q) : '') +
l.hash
);
}
}
}(window.location))
</script>
<title>Cryptography</title>
</head>
<body>
<noscript>
You need to enable JavaScript to run this app.
</noscript>
<div id="root"></div>
<script src="%PUBLIC_URL%/js/jquery-3.3.1.slim.min.js" type="text/javascript"></script>
<script src="%PUBLIC_URL%/js/popper.min.js" type="text/javascript"></script>
<script src="%PUBLIC_URL%/js/bootstrap.min.js" type="text/javascript"></script>
<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
</body>
</html>
更多信息和关于GitHub支持单页应用程序的讨论 在此处。
