获取链中的所有证书;中间和根

I'm working in Java with Apache's HTTPClient and trying to connect to graph.facebook.com. I'm getting "SSLPeerUnverifiedException: No peer certificate" errors, so I guess Facebook's CA isn't in the default keystore. So I need to create my own keystore with all the certificates that I want to trust, yes? So I found the following command for obtaining the certificate:I'm working in Java with Apache's HTTPClient an