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Posted to user@struts.apache.org by user0707 <ka...@gmail.com> on 2018/09/08 21:20:53 UTC
Migrate from Struts2 from 2.3.34 to 2.3.35
I am working on upgrading struts from 2.3.34 to 2.3.35 and I all assumed it
will be fully backward compatible.
Replaced following .jar which is marked as essential and while bringing up
WebApp in WAS, facing trouble with freemarker.jar
(freemarker/core/_Java8Impl.class).
Code is currently compiled against JDK 1.6 and JRE - 1.7 and while
application is coming up facing below exception:
[9/8/18 16:41:42:398 EDT] 00000042 ecs W
com.xxx.ws.ecs.internal.scan.context.impl.ScannerContextImpl scanJAR unable
to open input stream for resource freemarker/core/_Java8Impl.class in
archive WEB-INF/lib/freemarker-2.3.28.jar
java.lang.IllegalArgumentException
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
at org.objectweb.asm.ClassReader.<init>(Unknown Source)
Seems like this class and .jar is Build against JDK1.8 and will it be
problem for users below JDK/JRE 1.8 ?
I see this version of freemarker is marked as dependency in version notes of
struts, but can I continue to use freemarker-2.3.22.jar against struts
2.3.35?
Is there any way to avoid scanning of this .jar alone or any other
workaround to avoid above exception?
Could you please help.
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Re: Migrate from Struts2 from 2.3.34 to 2.3.35
Posted by Lukasz Lenart <lu...@apache.org>.
niedz., 9 wrz 2018 o 00:34 user0707 <ka...@gmail.com> napisał(a):
>
> I am working on upgrading struts from 2.3.34 to 2.3.35 and I all assumed it
> will be fully backward compatible.
>
> Replaced following .jar which is marked as essential and while bringing up
> WebApp in WAS, facing trouble with freemarker.jar
> (freemarker/core/_Java8Impl.class).
>
> Code is currently compiled against JDK 1.6 and JRE - 1.7 and while
> application is coming up facing below exception:
>
> [9/8/18 16:41:42:398 EDT] 00000042 ecs W
> com.xxx.ws.ecs.internal.scan.context.impl.ScannerContextImpl scanJAR unable
> to open input stream for resource freemarker/core/_Java8Impl.class in
> archive WEB-INF/lib/freemarker-2.3.28.jar
> java.lang.IllegalArgumentException
> at org.objectweb.asm.ClassReader.<init>(Unknown Source)
> at org.objectweb.asm.ClassReader.<init>(Unknown Source)
> at org.objectweb.asm.ClassReader.<init>(Unknown Source)
>
>
> Seems like this class and .jar is Build against JDK1.8 and will it be
> problem for users below JDK/JRE 1.8 ?
>
> I see this version of freemarker is marked as dependency in version notes of
> struts, but can I continue to use freemarker-2.3.22.jar against struts
> 2.3.35?
>
> Is there any way to avoid scanning of this .jar alone or any other
> workaround to avoid above exception?
I would ask such question on the Freemarker Users group, officially
Freemarker 2.3.28 can run on Java 5
https://freemarker.apache.org/freemarkerdownload.html
but looks like they support Java 8 with this class, disabling class
scanning in your app should help (no idea what ScannerContextImpl is
for).
https://github.com/apache/freemarker/blob/2.3-gae/src/main/java/freemarker/core/_Java8Impl.java#L27
Regards
--
Łukasz
+ 48 606 323 122 http://www.lenart.org.pl/
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