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https://issues.apache.org/jira/browse/WW-4646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15420799#comment-15420799
]
Sebastian Götz commented on WW-4646:
------------------------------------
To me it looks more like the content of the convention-plugin jar is not what
it should be. I defined the bean you as you suggested. But it failed with the
exception below. Opening the jar file shows me, that there actually is no
Java8ClassFinderFactory class inside. Could someone verify that the jar is
correct?
{noformat}
ERROR Dispatcher Dispatcher initialization failed
Unable to load configuration. - bean -
file:/B:/deploy8/wtpwebapps/web-gui/WEB-INF/classes/struts.xml:40:151
at
com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:70)
at
org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:897)
at
org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:437)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:478)
at
org.apache.struts2.dispatcher.InitOperations.initDispatcher(InitOperations.java:75)
at
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:63)
at
org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
at
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
at
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
at
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4573)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5188)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at
org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: Unable to load bean:
type:com.opensymphony.xwork2.util.finder.ClassFinderFactory
class:org.apache.struts2.convention.Java8ClassFinderFactory - bean -
file:/B:/deploy8/wtpwebapps/web-gui/WEB-INF/classes/struts.xml:40:151
at
com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:265)
at
org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:98)
at
com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:163)
at
com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
... 17 more
Caused by: java.lang.ClassNotFoundException:
org.apache.struts2.convention.Java8ClassFinderFactory
at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305)
at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157)
at
com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:176)
at
com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:238)
... 20 more
{noformat}
> remove ASM 3 from struts2
> -------------------------
>
> Key: WW-4646
> URL: https://issues.apache.org/jira/browse/WW-4646
> Project: Struts 2
> Issue Type: Bug
> Components: Core Actions, Plugin - Convention
> Affects Versions: 2.5
> Reporter: adam brin
> Assignee: Lukasz Lenart
> Fix For: 2.5.3
>
>
> Pulling from the discussion on the struts2-users list:
> Struts2 maintains two different versions of ASM 5x for the Convention plugin
> and 3x for the rest of struts. A basic search of the codebase suggests that
> the only direct uses of ASM are via the ClassFinder class in Xwork and used
> by the Convention plugin. Based on this
> [https://issues.apache.org/jira/browse/WW-4435] and
> [http://www.philvarner.com/2015/02/05/using-apache-cxf-2-7-struts2-2-3-and-asm-5-with-maven/],
> I wonder if it might make sense to:
> 1. remove the direct dependency on ASM entirely for XWork and Struts2 in
> general
> 2. move the ClassFinder class and direct dependencies the convention plugin
> and make them explicitly dependent on ASM 5x.
> 3. Like other apps like Spring, repackage/embed ASM into it's own package
> tree so it can live with other versions of ASM.
> -----
> the core issue for us is that there are overlaps between ASM 5 and ASM 3, and
> become explicit when launching our app with the maven-jetty-plugin. Classes
> with the same name in both packages though they have different groupIds and
> thus cause exceptions in startup either due to (a) Missing Classes like
> EmptyVisitor or (b) incompatible classes. It's our hope that by removing this
> dual dependency, we can take advantage of Java8 features and also simplify
> dependency management in our pom.
> thanks
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