java - PropertyException when setting Marshaller property with eclipselink.media-type value: application/json -

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i'm attempting follow example located here javax.xml.bind.propertyexception. receive exception because of following line of code: 

marshaller.setproperty("eclipselink.media-type", "application/json");

i have literally copy/pasted example listed above code see there. searching , google has not been helpful, , thought i'd bring geniuses @ help. appreciated, (de)serialization json , xml json.org, jackson, , jaxb has turned black , bottomless pit has consumed month of life.

my first impression wasn't specifying eclipselink runtime (as described here) didn't produce solution.

stacktrace:

exception in thread "main" javax.xml.bind.propertyexception: name: eclipselink.media-type value: application/json      @ org.eclipse.persistence.jaxb.jaxbmarshaller.setproperty(jaxbmarshaller.java:528)   @ com.dualoutput.dualoutput.main(dualoutput.java:20)

sscce

you need sure using eclipselink 2.4.0 or above. current version 2.5.0 can downloaded @ (or obtained maven central):

update

moxy offers following convenience classes access extension properties:

  • org.eclipse.persistence.jaxb.jaxbcontextproperties
  • org.eclipse.persistence.jaxb.marshllerproperties
  • org.eclipse.persistence.jaxb.unmarshallerproperties

this means following:

marshaller.setproperty(marshallerproperties.media_type, "application/json");

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