Extract Binary File(pdf) from SOAP Attachment

[Daniel Zhang]

Our client sent us a SOAP file in which they packaged pdf files as 
AttachmentPart. Basically if you open the file, it has the following 
structure:

----Boundary_value
Content-Type:  application/pdf
Content-Id: pdfnameA
%PDF-1.4
...pdf content...
%%EOF
----Boundary_value
Content-Type:  application/pdf
Content-Id: pdfnameB
%PDF-1.4
...pdf content...
%%EOF
Question: How can I extract pdf files from this SOAP attachment? First, 
I need to populate this soap file into a SOAPMessage object, then I 
tried to use javax.xml.soap.AttachmentPart class, I can use 
getContentId() and getContentType() to retrieve the header, but either 
java.lang.Object getContent() or getDataHandler() lack the methods to 
let me write the pdf content as a string to a file. Any ideas?

TIA,

-Daniel