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Re: [jetty-users] Classes scanned from multiple locations with Maven plugin (mvn install & mvn jetty:start)

Hi.

I don't understand why this thread has been left unanswered.

From the tests I made, it's enough to add:

  <webAppSourceDirectory>${project.build.directory}/${project.build.finalName}</webAppSourceDirectory>

to the jetty-maven-plugin for jetty to load the jars both from the local maven repository AND the WEB-INF/lib directory, and to trigger the multiple locations warning for each and every class of the webapp.

I really don't know how to circumvent this problem.

On 19-07-18 17 h 08, James Srinivasan wrote:
I think that would be appropriate if the clash was inside my war, but the clash is with classes inside my war and in my .m2 and target/classes directories. So this shouldn't happen on deployment, but does during dev/test.

On Thu, 18 Jul 2019 at 15:51, Meggyesi, Zalán <zmeggyesi@xxxxxxxx> wrote:
Hi James,

Just a quick suggestion, can you use the Shade plugin to use only one version of the classes?

Best Regards,

Zalan Meggyesi
Chief Support Engineer
Skawa Innovation Kft.

Mobile: +36205146666


On Thu, Jul 18, 2019 at 4:31 PM James Srinivasan <james.srinivasan@xxxxxxxxx> wrote:
I'm trying to use jetty-maven-plugin to run some integration tests
with failsafe, but getting lots of warnings similar to the following
with mvn install, or mvn jetty:start (but *not* with mvn jetty:run):

[WARNING] my.package.api.LinksApi scanned from multiple locations:
file:///path/to/my/project/my-project-1.0-SNAPSHOT/WEB-INF/classes/my/package/api/LinksApi.class,
file:///path/to/my/project/my-project/target/classes/my/package/api/LinksApi.class

and

[WARNING] com.sun.xml.fastinfoset.AbstractResourceBundle scanned from
multiple locations:
jar:file:///path/to/my/homedir/.m2/repository/com/sun/xml/fastinfoset/FastInfoset/1.2.16/FastInfoset-1.2.16.jar!/com/sun/xml/fastinfoset/AbstractResourceBundle.class,
jar:file:///C:/path/to/my/project/target/my-project-1.0-SNAPSHOT/WEB-INF/lib/FastInfoset-1.2.16.jar!/com/sun/xml/fastinfoset/AbstractResourceBundle.class

I've tried to solve this with:

<artifactId>maven-failsafe-plugin</artifactId>
<version>2.6</version>
<configuration>
    <useManifestOnlyJar>false</useManifestOnlyJar>
    <useSystemClassLoader>false</useSystemClassLoader>
</configuration>
[...]

and scanClassesPattern, scanTestClassesPattern, scanTargetPatterns in
jetty-maven-plugin

and adding javax.servlet as `provided` to my dependencies

But none of this has helped. Given the jars should all have the same
version, it doesn't appear critical but any help would be much
appreciated. I don't see why my local maven repo is on my servlet's
classpath.

My full pom.xml is here:

https://gist.github.com/jrs53/dc9c14e383e814c5e2b95e439152f83e

Thanks in advance,

James
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