Hi, I'm in the same boat as this guy: http://stackoverflow.com/questions/18150004/how-to-parse-xop-mtom-soap-response-using-java
TL;DR: I'm using an http connection to call a web service (this is a requirement of mine). The WS is returning an mtom message, and now I'm struggling to parse it. I've discovered these unit tests that give me a way to extract the attachments out of the message: https://svn.apache.org/repos/asf/cxf/branches/2.7.x-fixes/api/src/test/java/org/apache/cxf/attachment/AttachmentDeserializerTest.java I have used this to deserialize the attachments. But I can't figure out how to find the CID of the attachment. The attachment class has a getId() method, but this seems to return the first CID of the message, not the one related to the attachment. How do I get the CID of the attachment? For example, if a message looks like this: --uuid:870c5f71-c117-4569-9954-8fca719a63d9 Content-Type: application/xop+xml; charset=UTF-8; type="application/soap+xml"; Content-Transfer-Encoding: binary Content-ID: <root.mess...@cxf.apache.org> <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"><soap:Header/><soap:Body><RetrieveDocumentSetResponse xmlns="urn:ihe:iti:xds-b:2007" xmlns:ns10=" http://docs.oasis-open.org/wsrf/bf-2" xmlns:ns11=" http://docs.oasis-open.org/wsn/t-1" xmlns:ns12="urn:gov:hhs:fha:nhinc:common:subscriptionb2overridefordocuments" xmlns:ns13="http://nhinc.services.com/schema/auditmessage" xmlns:ns14="urn:oasis:names:tc:emergency:EDXL:DE:1.0" xmlns:ns15=" http://www.hhs.gov/healthit/nhin/cdc" xmlns:ns16="urn:gov:hhs:fha:nhinc:common:subscriptionb2overrideforcdc" xmlns:ns2="urn:gov:hhs:fha:nhinc:common:nhinccommon" xmlns:ns3="urn:gov:hhs:fha:nhinc:common:nhinccommonentity" xmlns:ns4="urn:oasis:names:tc:ebxml-regrep:xsd:rim:3.0" xmlns:ns5="urn:oasis:names:tc:ebxml-regrep:xsd:rs:3.0" xmlns:ns6="urn:oasis:names:tc:ebxml-regrep:xsd:query:3.0" xmlns:ns7="urn:oasis:names:tc:ebxml-regrep:xsd:lcm:3.0" xmlns:ns8=" http://docs.oasis-open.org/wsn/b-2" xmlns:ns9=" http://www.w3.org/2005/08/addressing"><ns5:RegistryResponse status="urn:oasis:names:tc:ebxml-regrep:ResponseStatusType:Success"/><DocumentResponse><HomeCommunityId>urn:oid:422.422</HomeCommunityId><RepositoryUniqueId>422.422</RepositoryUniqueId><DocumentUniqueId>422.422^KVRJuhCxq4O02_4S</DocumentUniqueId><mimeType>text/xml</mimeType><Document><xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:3511c0cc-5e20-46b7-8ae0-406c3b1ea95f-31@urn%3Aihe%3Aiti%3Axds-b%3A2007"/></Document></DocumentResponse><DocumentResponse><HomeCommunityId>urn:oid:422.422</HomeCommunityId><RepositoryUniqueId>422.422</RepositoryUniqueId><DocumentUniqueId>422.422^22255544631</DocumentUniqueId><mimeType>text/xml</mimeType><Document><xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:3511c0cc-5e20-46b7-8ae0-406c3b1ea95f-32@urn%3Aihe%3Aiti%3Axds-b%3A2007"/></Document></DocumentResponse><DocumentResponse><HomeCommunityId>urn:oid:422.422</HomeCommunityId><RepositoryUniqueId>422.422</RepositoryUniqueId><DocumentUniqueId>422.422^1234566543214425</DocumentUniqueId><mimeType>text/xml</mimeType><Document><xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:3511c0cc-5e20-46b7-8ae0-406c3b1ea95f-33@urn %3Aihe%3Aiti%3Axds-b%3A2007"/></Document></DocumentResponse></RetrieveDocumentSetResponse></soap:Body></soap:Envelope> --uuid:870c5f71-c117-4569-9954-8fca719a63d9 Content-Type: text/xml Content-Transfer-Encoding: binary Content-ID: <3511c0cc-5e20-46b7-8ae0-406c3b1ea95f-31@urn :ihe:iti:xds-b:2007> <?xml version="1.0" encoding="UTF-8"?> <ClinicalDocument ... And I've got the Attachment class for the ClinicalDocument attachment, how do I get the Content-ID of 3511c0cc-5e20-46b7-8ae0-406c3b1ea95f-31@urn:ihe:iti:xds-b:2007 out of that attachment class? -- Thanks, Dan -- Thanks, Dan -- CONFIDENTIALITY NOTICE: The information contained in this electronic transmission may be confidential. If you are not an intended recipient, be aware that any disclosure, copying, distribution or use of the information contained in this transmission is prohibited and may be unlawful. If you have received this transmission in error, please notify us by email reply and then erase it from your computer system.