App Engine + Maven + Hot swap of war

[Carl Emmoth]

Hello,

so is it possible to run maven devserver (mvn appengine:devserver) and have live hot swap for any changes in war dir?

Like, if I change index.html with new text and refresh in browser, can it update?

It seems like fullScanSeconds only updates Java classes.

Thanks,

Carl

[Vinny P]

Do you mean updates to static files? There are workarounds described in this link: 

http://stackoverflow.com/questions/21345177/is-there-any-way-to-trigger-the-maven-appengine-devserver-to-auto-refresh-static 

 

 

-----------------

-Vinny P

Technology & Media Consultant

Chicago, IL

App Engine Code Samples: http://www.learntogoogleit.com

 

[Rajesh Gupta]

My company is familiar with javascript tools, and hence, trying to explore grunt task here, to copy the modified jsp/html file to the target folder.

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[Ludovic Champenois]

Hi,

If your pom.xml is configured in the build section like:

  <build>

    <!-- for hot reload of the web application-->

    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>    

    <plugins>

      <plugin>

.....

Then Eclipse, NetBeans and IntelliJ which are all supporting incremental compile on a java file Save, or update the static file resources in the exploded war directory, will trigger automatically a App Server restart, enable hot swap of your application just by saving files in the IDE:

Save and reload the app in the browser... Very effective.

Also documented at:

https://cloud.google.com/appengine/docs/java/tools/maven#app_engine_maven_plugin_goals

(Same feature is available for Managed VMs, and the cloud SDK Maven plugin:

https://cloud.google.com/appengine/docs/java/managed-vms/maven

)

Ludo