Receiving a SAML Response with a Java servlet

As an addendum to my previous post, if you need to receive a SAML Response in a Java servlet using OpenSAML you can use this code. This is, obviously, more likely than needing to create a Response object from an XML file. The 'request' variable is just an input to the processRequest method on the servlet.

import org.opensaml.ws.message.MessageContext;
import org.opensaml.ws.transport.http.HttpServletRequestAdapter;
import org.opensaml.common.binding.BasicSAMLMessageContext;
import org.opensaml.saml2.binding.decoding.HTTPPostDecoder;
import org.opensaml.saml2.core.Response;

//get the message context
MessageContext messageContext = new BasicSAMLMessageContext();
messageContext.setInboundMessageTransport(new HttpServletRequestAdapter(request));
HTTPPostDecoder samlMessageDecoder = new HTTPPostDecoder();
samlMessageDecoder.decode(messageContext);

//get the SAML Response
Response samlResponse = (Response)messageContext.getInboundMessage();