downloading guice3.0 artifact from maven central repository

[pnmpn]

I'm trying to upgrade my struts2 web app from guice2.0 to guice3.0.
I'm trying to test it out using maven jetty. I've successfully
upgraded my pom.xml to use the correct version and groupId for the 3.0
release, but if I call mvn jetty:run I see that it is trying to
download guice-3.0-no_deps.jar

which throws a build error and can't be found the central repository?

I don't get this error if I don't include any guice extensions such
as

<dependency>
<groupId>com.google.inject.extensions</groupId>
<artifactId>guice-struts2</artifactId>
<version>3.0</version>
</dependency>


Any ideas?

Thanks

[Stuart McCulloch]

On 1 Jun 2011, at 17:19, pnmpn wrote:

> I'm trying to upgrade my struts2 web app from guice2.0 to guice3.0.
> I'm trying to test it out using maven jetty. I've successfully
> upgraded my pom.xml to use the correct version and groupId for the 3.0
> release, but if I call mvn jetty:run I see that it is trying to
> download guice-3.0-no_deps.jar
>
> which throws a build error and can't be found the central repository?

The guice-3.0-no_deps.jar is a build-time artifact that's used to compile the extensions, but is not required at runtime - it's not on maven central because the Guice team didn't want people depending on this "uber-jar" by mistake. The extensions have an optional dependency to guice-3.0-no_deps.jar (so they can compile) but they also have a non-optional dependency to guice-3.0.jar for the runtime case.

Well-behaved maven plugins should see that the the no_deps dependency is optional and not throw a build error if it's missing, so this sounds like a bug in the jetty plugin. To workaround the Jetty bug you can explicitly hide this dependency as follows:

<dependency>
<groupId>com.google.inject.extensions</groupId>
<artifactId>guice-struts2</artifactId>
<version>3.0</version>

<exclusions>
<exclusion>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.google.inject</groupId>
<artifactId>guice</artifactId>
<version>3.0</version>
</dependency>

Note that we can't do this in the original build pom because we still need the no_deps dependency when doing the original compilation.

> I don't get this error if I don't include any guice extensions such
> as
>
> <dependency>
> <groupId>com.google.inject.extensions</groupId>
> <artifactId>guice-struts2</artifactId>
> <version>3.0</version>
> </dependency>
>
>
> Any ideas?
>
> Thanks
>

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[pnmpn]

That worked, thanks for your help.