High-performance JSON processor.

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08-Jul-2011: Jackson 1.8.3, 1.7.8 released


  • 20-Apr-2011: Jackson 1.8.0 released (customized naming convent, full Map key customizations)
  • 06-Jan-2011: Jackson 1.7.0 released (module API, contextual serializers/deserializers)
  • 06-Sep-2010: Jackson 1.6.0 released.
  • 14-Mar-2010: Jackson 1.5.0 released.
  • 10-Mar-2010: Jackson User Group created @Ning.


  • 19-Dec-2009: Jackson 1.4.0 released
  • 30-Oct-2009: Jackson 1.3.0 released
  • 02-Aug-2009: Jackson 1.2.0 released
  • 22-Jun-2009: Jackson 1.1.0 released; highlights are: support for using JAXB annotations, generating JSON Schema, allowing fields to be directly serialized/deserialized, and simpler set of core annotations (@JsonProperty, @JsonSerialize and @JsonDeserializer).
  • 08-May-2009: Jackson 1.0.0 released
  • 27-Apr-2009: Second 1.0 release candidate (0.9.9-6) released: much improved Jax-RS provider for doing "Clean Json" on Jersey
  • 20-Apr-2009: First 1.0 release candidate (0.9.9-5) released!
  • 14-Apr-2009: 0.9.9-4 released, generics-related bug fixes. Getting yet closer to 1.0.0...
  • 03-Apr-2009: 0.9.9-3 released, lots of bug fixes.
  • 13-Mar-2009: 0.9.9-2 released, paving the way for 1.0.0 release (please test!)
  • 02-Mar-2009: 0.9.9 released: lots of minor improvements, but perhaps most importantly, now comes with a proper JAX-RS Json Content handler: No more Franken-JSON with JAX-RS!
  • 16-Feb-2009: 0.9.8 released: most basic annotations now implemented, JsonParser/JsonGenerator connected to ObjectMapper (iff using MappingJsonFactory).
  • 10-Feb-2009: Started writing some Documentation, including Tutorial.
  • 04-Feb-2009: 0.9.7 released: complete binary/base64 support, other misc improvements
  • 14-Jan-2009: 0.9.6 released: now with full-featured DE-serialization, too. That is, complete POJO/Bean data mapping support!


  • 10-Dec-2008: 0.9.5 released: now with full-featured serialization, including Bean serialization (just missing Bean deserialization)
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