Error java.lang.ClassNotFoundException: "Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.type.TypeReference

I'm developing a Java, FX, Hibernate application and using log4j2 for my logs. When I run the application through the IDE (Eclipse) everything works normally, but when creating the application .jar, the following errors appear (just when starting the database in Hibernate):

26/01/2016 11:22:32.186 [ INFO] LogHelper.java:31 - HHH000204: Processing PersistenceUnitInfo [
    name: crp
    ...]
26/01/2016 11:22:32.243 [ INFO] Version.java:37 - HHH000412: Hibernate  Core {5.0.7.Final}
26/01/2016 11:22:32.248 [ INFO] Environment.java:198 - HHH000205: Loaded properties from resource hibernate.properties: {hibernate.bytecode.use_reflection_optimizer=false}
26/01/2016 11:22:32.250 [ INFO] Environment.java:317 - HHH000021:Bytecode provider name : javassist
26/01/2016 11:22:32.293 [ INFO] JavaReflectionManager.java:66 - HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
26/01/2016 11:22:33.761 [ERROR] Conexao.java:20 - Erro em Persistence.createEntityManagerFactory(crp) => Unable to build entity manager factory javax.persistence.PersistenceException: Unable to build entity manager factory at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:66)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
    at br.org.eldorado.crp.util.Conexao.<clinit>(Conexao.java:18)
    at br.org.eldorado.crp.controller.Tasks$2.call(Tasks.java:39)
    at br.org.eldorado.crp.controller.Tasks$2.call(Tasks.java:1)
    at javafx.concurrent.Task$TaskCallable.call(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.apache.logging.log4j.core.appender.
db.jpa.converter.ContextMapJsonAttributeConverter] 
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:232)
    at org.hibernate.boot.model.process.internal.ScanningCoordinator.applyScanResultsToManagedResources(ScanningCoordinator.java:235)
    at org.hibernate.boot.model.process.internal.ScanningCoordinator.coordinateScan(ScanningCoordinator.java:81)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.prepare(MetadataBuildingProcess.java:98)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:194)
    at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:34)
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilder(HibernatePersistenceProvider.java:165)
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:114)
    at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:71)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:52)
    ... 8 more
Caused by: java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/type/TypeReference
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:226)
    ... 17 more
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.type.TypeReference
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 20 more
26/01/2016 11:22:33.863 [ERROR] MainController.java:433 - Falha ao conectar com o banco de dados!

I'm totally lost where the error may be. Please, somebody can give some help, at least to understand what is happening.

Thank you very much.