在Java中，要收集用户的证书，可以通过以下方式实现：
X509Certificate[] certs = (X509Certificate[]) request.getAttribute("javax.servlet.request.X509Certificate");
从那里，您可以使用checkValidation方法来检查数组中每个特定证书的有效性。在Rails/Ruby中，是否有类似的方法来收集用户的证书？
同样，您可以通过
System.setProperty("javax.net.ssl.keyStore", "/path/to/keystore");
System.setProperty("javax.net.ssl.trustStore", "/path/to/truststore");
在Rails中，我可以在哪里建立密钥/信任存储，或者完全依赖于服务器？
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