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BSON for Jackson Actions Status Apache License, Version 2.0

This library adds support for BSON to the Jackson JSON processor.

BSON is a binary representation of JSON. It is well known as the main exchange and persistence format of MongoDB.

Quick start

Just create a Jackson ObjectMapper with a BsonFactory as follows:

ObjectMapper mapper = new ObjectMapper(new BsonFactory());

For more information, you may read my bson4jackson tutorial or the complete documentation of Jackson.


bson4jackson binaries are available from the GitHub releases page.

You may also use Maven to download bson4jackson:


If you are using Gradle, you may add the following snippet to your build.gradle:

dependencies {
    implementation 'de.undercouch:bson4jackson:2.15.0'


The latest version of bson4jackson is backward compatible to all versions of Jackson 2.x released up to date. It should be compatible to newer versions as well. If you experience compatibility issues, just let me know.

If you are looking for a version compatible to Jackson 1.x, please use bson4jackson 1.3.0. It's the last version for the 1.x branch. bson4jackson 1.3.0 is compatible to Jackson 1.7 up to 1.9.


Execute the following command to compile the library and to run the unit tests:

./gradlew test

The script automatically downloads the correct Gradle version so you won't have to do anything else. If everything runs successfully, you may create a .jar library:

./gradlew jar

The library will be located under build/libs.


bson4jackson is licensed under the Apache License, Version 2.0.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.