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Chapter 9. Sending Binary Data with SOAP MTOM


SOAP Message Transmission Optimization Mechanism (MTOM) replaces SOAP with attachments as a mechanism for sending binary data as part of an XML message. Using MTOM with Apache CXF requires adding the correct schema types to a service's contract and enabling the MTOM optimizations.

9.1. Overview of MTOM

SOAP Message Transmission Optimization Mechanism (MTOM) specifies an optimized method for sending binary data as part of a SOAP message. Unlike SOAP with Attachments, MTOM requires the use of XML-binary Optimized Packaging (XOP) packages for transmitting binary data. Using MTOM to send binary data does not require you to fully define the MIME Multipart/Related message as part of the SOAP binding. It does, however, require that you do the following:
  1. Annotate the data that you are going to send as an attachment.
    You can annotate either your WSDL or the Java class that implements your data.
  2. Enable the runtime's MTOM support.
    This can be done either programmatically or through configuration.
  3. Develop a DataHandler for the data being passed as an attachment.
    Developing DataHandlers is beyond the scope of this book.