[jira] [Created] (WW-4431) Java 8 support - lambda in action classes

["Paweł Wielgus (JIRA)" <ji...@apache.org>]

Paweł Wielgus created WW-4431:
---------------------------------

             Summary: Java 8 support - lambda in action classes
                 Key: WW-4431
                 URL: https://issues.apache.org/jira/browse/WW-4431
             Project: Struts 2
          Issue Type: Improvement
          Components: Core Actions
    Affects Versions: 2.3.16.3
         Environment: Jdk 1.8
            Reporter: Paweł Wielgus
            Priority: Minor


When there is any lamba expression placed inside of action class, during startup struts is presenting error like below:

com.opensymphony.xwork2.util.logging.commons.CommonsLogger error
SEVERE: Unable to read class [com.ppp.elsevier.struts.action.admin.spa.bannerBox.SampleAction]
java.lang.ArrayIndexOutOfBoundsException: 10572
	at org.objectweb.asm.ClassReader.readClass(Unknown Source)
	at org.objectweb.asm.ClassReader.accept(Unknown Source)
	at org.objectweb.asm.ClassReader.accept(Unknown Source)
	at com.opensymphony.xwork2.util.finder.ClassFinder.readClassDef(ClassFinder.java:717)
	at com.opensymphony.xwork2.util.finder.ClassFinder.<init>(ClassFinder.java:112)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.findActions(PackageBasedActionConfigBuilder.java:390)
	at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:347)
	at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:53)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:268)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:489)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:74)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:298)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:119)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4076)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4730)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:822)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
	at org.apache.catalina.core.StandardService.start(StandardService.java:525)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

After this exception application is starting normally but SampleAction is not configured and not accessible.

If lambda expression is removed from action class (i.e. the lambda is moved to non action class and referenced from inside action), all is working without problems.





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