Getting JRebel to work with 'mvn tomcat:run'

Question

I was wondering if someone could point me in the direction of getting JRebel to work when I execute 'mvn tomcat:run' from the command line. I can get JRebel to work in my IDE (IntelliJ IDEA), but it feels a little clunky to be running inside of the IDE. When I run tests, I don't like having another process running right next to it - call it a habit.

More than that though, I've been having some server lock ups with JRebel as I try it out... and I don't want IDE to hang as a result. I've been teminating the process manually, and control is given back to IDEA... but it would be better to not have it running in IDEA at all.

I've tried googling this, but I haven't found how to incorporate JRebel with the tomcat plugin.

Thanks

Canicula

Answer 1

doesn't setting MAVEN_OPTS system variable help?

Just and example:

1. mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-webapp -DarchetypeArtifactId=maven-archetype-webapp
2. cd my-webapp
3. to pom.xml of your example add the following:
   <plugin>
     <groupId>org.zeroturnaround</groupId>
     <artifactId>jrebel-maven-plugin</artifactId>
     <executions>
      <execution>
       <id>generate-rebel-xml</id>
       <phase>process-resources</phase>
        <goals>
         <goal>generate</goal>
        </goals>
      </execution>
     </executions>
   </plugin>
   
4. set MAVEN_OPTS=-javaagent:/path/to/jrebel.jar
5. mvn tomcat:run

In the console you'll see message from JRebel like these:

JRebel: Directory 'C:\projects\my-webapp\target\classes' will be monitored for changes.
JRebel: Directory 'C:\projects\my-webapp\src\main\webapp' will be monitored for changes.

Fulfill

I didn't know about MAVEN_OPTS. I was looking in the actual pom.xml. Thanks! – Canicula

yeah for me just adding the plugin to the pom worked great. thanks! – Maxa

Answer 2

If you happen to execute tomcat:run within eclipse and have the JRebel eclipse plugin installed, you can also simply enable JRebel on the run configuration.

Cistercian

Answer 3

When I tried it today. I didn't see my changes being reflected at run time. I had to relauch application to see changes take it effect

Mantelet

Pushkar, there could be several reasons. Did the Javaagent run correctly? Did you have a valid license? Did you have a valid rebel.xml mappings for your application? Were the classes actually recompiled after the change was made? Turn to [email protected] for help. – Recommit