Application requires explicit inclusion of fasterxml

So, when I included the section mentioned in the wiki into my pom.xml of my appengine application (Ninja Framework):

    <dependency>
        <groupId>io.jsonwebtoken</groupId>
        <artifactId>jjwt</artifactId>
        <version>0.1</version>
    </dependency>

and ran the application, I got the following stack trace, repeatedly.

[java.net.URLClassLoader$1.run(URLClassLoader.java:366),java.net.URLClassLoader$1.run(URLClassLoader.java:355),java.security.AccessController.doPrivileged(Native Method),java.net.URLClassLoader.findClass(URLClassLoader.java:354),java.lang.ClassLoader.loadClass(ClassLoader.java:425),com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:216),java.lang.ClassLoader.loadClass(ClassLoader.java:358),java.lang.Class.forName0(Native Method),java.lang.Class.forName(Class.java:270),controllers.api.AuthenticationController.get(AuthenticationController.java:49),sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method),sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57),sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43),java.lang.reflect.Method.invoke(Method.java:606),com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115),ninja.params.ControllerMethodInvoker.invoke(ControllerMethodInvoker.java:56),ninja.FilterChainEnd.next(FilterChainEnd.java:48),ninja.NinjaDefault.onRouteRequest(NinjaDefault.java:82),ninja.servlet.NinjaServletDispatcher.service(NinjaServletDispatcher.java:83),com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:278),com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:268),com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:180),com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:93),com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85),com.googlecode.objectify.cache.AsyncCacheFilter.doFilter(AsyncCacheFilter.java:59),com.googlecode.objectify.ObjectifyFilter.doFilter(ObjectifyFilter.java:49),com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82),com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120),com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:134),com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:131),com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:208),com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:131),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366),com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349),com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116),org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157),org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388),org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216),org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182),org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765),org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418),com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98),org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152),com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491),org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152),org.mortbay.jetty.Server.handle(Server.java:326),org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542),org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938),org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755),org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218),org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404),org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409),org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)]

The resolution of this was to manually include the dependency for fasterxml.

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.4.2</version>
    </dependency>

I’m not sure why this is the case, but wanted to document it here just in case anybody else runs into this in the future.

BTW, This looks like an AWESOME library!

[komiyak]

@GMSyrimis Perhaps, is the cause of its problem here? https://stackoverflow.com/questions/22467127/error-duplicate-files-during-packaging-of-apk

I solved it with this. exclude 'META-INF/LICENSE'

[GMSyrimis]

For some reason when using the gradle import I get the following:

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
  	File1: /Users/gsyrimis/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.8.0/45b426f7796b741035581a176744d91090e2e6fb/jackson-annotations-2.8.0.jar
  	File2: /Users/gsyrimis/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.8.2/80004060cc6f71a027b81e89ef4d74628f824f/jackson-core-2.8.2.jar
  	File3: /Users/gsyrimis/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.8.2/1f12816593c1422be957471c98a80bfbace60fa2/jackson-databind-2.8.2.jar

When I inspected my dependencies it seems that jsonwebtoken is getting all three files, so I’m confused as to why it’s finding duplicates