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https://issues.apache.org/jira/browse/WICKET-5910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552232#comment-14552232
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ASF subversion and git services commented on WICKET-5910:
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Commit 077e1c3d54d044ccfe7b56cc4decf4baf2cc6717 in wicket's branch
refs/heads/master from [~gsmet]
[ https://git-wip-us.apache.org/repos/asf?p=wicket.git;h=077e1c3 ]
WICKET-5910 Do not intercept the protected methods with CGLib.
> CGLib proxy should not intercept protected methods
> --------------------------------------------------
>
> Key: WICKET-5910
> URL: https://issues.apache.org/jira/browse/WICKET-5910
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 7.0.0-M5
> Reporter: Guillaume Smet
>
> Hi,
> When trying to inject a Jackson 2 ObjectMapper, we end up with the following
> exception:
> {quote}
> java.lang.IllegalArgumentException: Protected method:
> defaultClassIntrospector()Lcom/fasterxml/jackson/databind/introspect/ClassIntrospector;
> at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:209)
> at
> org.apache.wicket.proxy.LazyInitProxyFactory$CGLibInterceptor.intercept(LazyInitProxyFactory.java:329)
> at
> WICKET_com.fasterxml.jackson.databind.ObjectMapper$$EnhancerByCGLIB$$b8a70988.defaultClassIntrospector(<generated>)
> at
> com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:465)
> at
> com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:391)
> at
> WICKET_com.fasterxml.jackson.databind.ObjectMapper$$EnhancerByCGLIB$$b8a70988.<init>(<generated>)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at net.sf.cglib.core.ReflectUtils.newInstance(ReflectUtils.java:228)
> at net.sf.cglib.core.ReflectUtils.newInstance(ReflectUtils.java:220)
> at net.sf.cglib.core.ReflectUtils.newInstance(ReflectUtils.java:216)
> at net.sf.cglib.proxy.Enhancer.createUsingReflection(Enhancer.java:643)
> at net.sf.cglib.proxy.Enhancer.firstInstance(Enhancer.java:538)
> at
> net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:231)
> at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
> at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
> at
> org.apache.wicket.proxy.LazyInitProxyFactory.createProxy(LazyInitProxyFactory.java:170)
> at
> org.apache.wicket.spring.injection.annot.AnnotProxyFieldValueFactory.getFieldValue(AnnotProxyFieldValueFactory.java:164)
> at org.apache.wicket.injection.Injector.inject(Injector.java:111)
> at
> org.apache.wicket.spring.injection.annot.SpringComponentInjector.inject(SpringComponentInjector.java:124)
> at
> fr.openwide.core.wicket.more.console.maintenance.task.model.BatchReportBeanModel.<init>(BatchReportBeanModel.java:45)
> {quote}
> I ended up on this thread which explains the issue and how the people at
> Spring fixed the issue:
> http://comments.gmane.org/gmane.comp.java.cglib.devel/720
> There are 2 ways to fix the issue:
> - either use invokeSuper() instead of invoke() if the method is protected;
> - or do not override at all the calls to protected methods.
> Spring did it the second way and that's what I implemented in the PR to come.
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