See this thread for an update:
http://groups.google.com/group/google-web-toolkit/browse_thread/thread/f166bf388068e0c

--
David Chandler
Developer Programs Engineer, GWT

On Oct 14, 10:00 pm, superdama <[email protected]> wrote:
> I figure out to run gwt:expense sample via mvn command line
> ===========================================
>  1. checkout
>     svn checkouthttp://google-web-toolkit.googlecode.com/svn/trunk/
> trunk
>     svn checkouthttp://google-web-toolkit.googlecode.com/svn/tools/
> tools
>
>  2. compile gwt
>     ant buildonly
>
>  3. under the trunk directory, install gwt-xxx new jar
>     mvn install:install-file -DgroupId=com.google.gwt -DartifactId=gwt-
> dev -Dversion=2.1-SNAPSHOT -Dpackaging=jar -Dfile=build/lib/gwt-
> dev.jar -DgeneratePom=true
>      mvn install:install-file -DgroupId=com.google.gwt -
> DartifactId=gwt-user -Dversion=2.1-SNAPSHOT -Dpackaging=jar -
> Dfile=build/lib/gwt-user.jar -DgeneratePom=true
>      mvn install:install-file -DgroupId=com.google.gwt -
> DartifactId=gwt-servlet -Dversion=2.1-SNAPSHOT -Dpackaging=jar -
> Dfile=build/lib/gwt-servlet.jar -DgeneratePom=true
>
>   4.change expenses\pox.xml
>      gae-version ==> 1.3.7
>      reset -javaagent to :
>      -javaagent:C:\eclipse\plugins
> \com.google.appengine.eclipse.sdkbundle.
> 1.3.7_1.3.7.v201008311427\appengine-java-sdk-1.3.7\lib\agent\appengine-
> agent.jar
>       *** make sure you point the -javaagent to the right directory,
> mine is: C:\eclipse\plugins\com.google.appengine.eclipse.sdkbundle.
> 1.3.7_1.3.7.v201008311427\appengine-java-sdk-1.3.7\lib\agent\appengine-
> agent.jar
>
>    5. mvn package
>    6. mvn gae:run
> ===========================================
>
> On Sep 28, 4:39 am, hezjing <[email protected]> wrote:
>
> > I got a little bit further with the following steps:
>
> > 1. Build the GWT source code:
>
> > >cd C:\gwt\trunk
> > >ant
>
> > 2. Install the latest GWT JARs into local Maven repository:>mvn 
> > install:install-file -DgroupId=com.google.gwt -DartifactId=gwt-servlet
>
> > ^
> > -Dversion=2.1-SNAPSHOT -Dpackaging=jar
> > -Dfile=C:\gwt\trunk\build\staging\gwt-0.0.0\gwt-servlet.jar>mvn 
> > install:install-file -DgroupId=com.google.gwt -DartifactId=gwt-user ^
>
> > -Dversion=2.1-SNAPSHOT -Dpackaging=jar
> > -Dfile=C:\gwt\trunk\build\staging\gwt-0.0.0\gwt-user.jar
>
> > 3. Import C:\gwt\trunk\samples\expenses to Eclipse as an existing Maven
> > project.
>
> > Now I'm able to browse the project without any error.
>
> > How should I run the application from Eclipse? I tried:
>
> > 1. Project -> Properties -> Google -> App Engine Settings ...
> > Check 'Use Google App Engine'
> > Use specific SDK: 'C:\Documents and
> > Settings\hezjing\.m2\repository\com\google\appengine - unknown version'
>
> > 2. Project -> Properties -> Google -> Web Toolkit
> > Check 'Use Google Web Toolkit'
> > Configure and use the SDK at C:\gwt\trunk\build\staging\gwt-0.0.0
>
> > 3. Project -> Properties -> Google -> Web Application
> > Check 'The project has a WAR directory'
> > WAR directory: src/main/webapp
> > Uncheck 'Launch and deploy from this directory'
>
> > With the above steps, I got an error that says:
> > The App Engine SDK 'C:\Documents and
> > Settings\cpt2t2o\.m2\repository\com\google\appengine' on the project's build
> > path is not valid
>
> > I also failed to run the application from command line using gae:run:
>
> > C:\gwt\trunk\samples\expenses>mvn gae:run
> > [INFO] Scanning for projects...
> > [INFO] Searching repository for plugin with prefix: 'gae'.
> > [INFO]
> > ------------------------------------------------------------------------
> > [ERROR] BUILD ERROR
> > [INFO]
> > ------------------------------------------------------------------------
> > [INFO] The plugin 'org.codehaus.mojo:google-app-engine-maven-plugin' does
> > not exist or no valid version could be found
>
> > I definitely need more help from you :-)
>
> > On Tue, Sep 28, 2010 at 3:16 AM, Ed M <[email protected]> wrote:
> > > where are you supposed to run the 'mvn package' command from?
>
> > > If the answer is the command prompt. I'm assuming that this means one
> > > has to actually download maven, not just the eclipse plugin
>
> > > --
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> > > "Google Web Toolkit" group.
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> > > To unsubscribe from this group, send email to
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> > >  [email protected]>
> > > .
> > > For more options, visit this group at
> > >http://groups.google.com/group/google-web-toolkit?hl=en.
>
> > --
>
> > Hez

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