A tool for transforming POJO to XML and JSON, based on xml-mapping is needed

Question

I need an open-source tool which can convert POJOs to XML and JSON strings.

Jersey (and probably other JAX-RS implementations) would fit these requirements if mappings could be configured through xml-files but not through annotations.

Is there anything suitable?

Answer 1

POJO to XML

JAXB is the Java standard (JSR-222) for converting Java objects to/from XML (I am a member of the JAXB expert group):

• http://bdoughan.blogspot.com/2010/07/jaxb-xml-binding-standard.html

POJO to JSON

People have been using JAXB with Jettison to produce JSON. This is how Jersey (JAX-RS reference implementation) converts POJOs to JSON by default.

• http://bdoughan.blogspot.com/2011/04/jaxb-and-json-via-jettison.html

XML Configuration

If you require the ability to configure the metadata via XML, then you can use EclipseLink JAXB (MOXy), I'm the MOXy tech lead:

• http://bdoughan.blogspot.com/2010/12/extending-jaxb-representing-annotations.html