Caused by: java.lang.VerifyError: Failed to link com/fasterxml/jackson/databind/type/ReferenceType: Cannot inherit from final class

Question

I'm using Spring version 4.3.13.RELEASE, Spark Version 2.2.0-2.11, mongo-spark-connector_2.11(2.2.0), jackson 2.8.9. My application is working fine in Tomcat7 but getting the exceptions in Wildfly10

org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.VerifyError: Failed to link com/fasterxml/jackson/databind/type/ReferenceType (Module "deployment.app.war:main" from Service Module Loader): Cannot inherit from final class at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:982) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50) at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

Answer 1

The spring boot 2.0 war created by the maven or gradle war plugin will work on jboss EAP 7.1. The same war file will through an exception on jboss EAP 7.0 server.

The exception is java.lang.VerifyError: Failed to link com/fasterxml/jackson/databind/type/ReferenceType

The deployment exception arises becuse the jboss has it own jackson library and a class loading time verification error occours.

SOLUTION : The solution to this problem is to add a jboss specific xml file named jboss-deployment-structure.xml in to the WEB-INF folder.

<?xml version='1.0' encoding='UTF-8'?>
<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.1">
<deployment>
<exclusions>
<module name="com.fasterxml.jackson.core.jackson-annotations" />
<module name="com.fasterxml.jackson.core.jackson-core" />
<module name="com.fasterxml.jackson.core.jackson-databind" />
<module name="com.fasterxml.jackson.jaxrs.jackson-jaxrs-json-provider" />
<module name="org.jboss.resteasy.resteasy-jackson2-provider" />
<module name="org.slf4j" />
</exclusions>
</deployment>
</jboss-deployment-structure>