This is a multi-module project that contains Jackson-based JAX-RS (*) providers for following data formats:
Providers implement JAX-RS
MessageBodyWriter handlers for specific
data formats. They also contain SPI settings for auto-registration.
(*) NOTE! JAX-RS is the "old" API defined under
javax.ws.rs; in 2019 or so, Oracle decided to force
a forking of this into "Jakarta" variant under
As of 2021 most frameworks still use the old API but if you do need/want to use newer one,
check out Jakarta-RS provider repo at jackson-jakarta-rs-providers
To use JAX-RS on Maven-based projects, use dependencies like:
<dependency> <groupId>com.fasterxml.jackson.jaxrs</groupId> <artifactId>jackson-jaxrs-json-provider</artifactId> <version>2.12.3</version> </dependency>
(above is for JSON provider; modify appropriately for other providers)
Due to auto-registration, it should be possible to simply add Maven dependency (or include jar if using other build systems) and let JAX-RS implementation discover provider. If this does not work you need to consult documentation of the JAX-RS implementation for details.
Here are some links that may help:
Starting with Jackson 2.8, there is a small supporting datatype module,
It will not be auto-registered automatically (unless user calls
instead, user has to register it by normal means:
ObjectMapper mapper = JsonMapper.builder() // or whichever format backend we have .addModule(new Jaxrs2TypesModule()) .build(); // and then register mapper with JAX-RS provider(s)
and ensuring that configured mapper is used by JAX-RS providers.
It is possible that later versions of providers may offer additional ways to get datatype module registered.
In addition to annotation value classes, it is also possible to use a subset of Jackson annotations with provider.
Here is a short list of supported annotations that work with all formats:
@JsonViewcan be used to define active view for specific endpoint
@JsonRootNamecan be used to specify alternate rootname; most often used with XML, but possibly with JSON as well.
@JacksonAnnotationsInsidemeta-annotation may be used as a marker, to create "annotation bundles", similar to how they are used with value type annotations
com.fasterxml.jackson.jaxrs.annotation.JacksonFeaturescan be used with all provid to enable/disable
DeserializationFeaturefor data-binding configuration
JsonGenerator.Featurefor low(er) level Streaming read/write options
In addition there are format-specific annotations that may be used:
JSONPwrapping for serialized result
The JSON/JAX-RS module has multiple names depending on the version in use. To enable modular usage, add the requires statement that pertains directly to the implementation you are using.
requires javax.ws.rs.api; //Older libraries requires java.ws.rs; //Newer libraries
Starting with Jackson 2.13, there is a fully separate set of providers for "Jakarta-RS", see: jackson-jaxrs-providers.
But Jackson 2.12 also has (just for that version),
jakarta classifier variant of JAXB providers included here.
You MAY be able to use these variants by using dependency like:
<dependency> <groupId>com.fasterxml.jackson.jaxrs</groupId> <artifactId>jackson-jaxrs-json</artifactId> <classifier>jakarta</classifier> </dependency>
Jackson components are supported by the Jackson community through mailing lists, Gitter forum, Github issues. See Participation, Contributing for full details.
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