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About Ivar Grimstad

Ivar Grimstad
Ivar Grimstad is an experienced software architect focusing on Enterprise Java. He is participating in the Java Community Process as a member of the Expert Groups for JSR 368 (JMS 2.1), JSR 371 (MVC 1.0), JSR 375 (Java EE Security API). He is also a member of the NetBeans Dream Team.

Run and Debug a WildFly Swarm application from NetBeans

Java EE developers using NetBeans are used to be able to run and debug their thin-war applications in their application server of choice directly from NetBeans. When developing microservices packaged as über-or hollow-jars, you expect the same effortless way of running and debugging. The good news is that you can. In this post, I show step-by-step how to run and debug the WildFly Swarm version of CloudEE Duke in NetBeans.

Run WildFly Swarm application

The easiest way of running CloudEE Duke in NetBeans is to edit the Run project action for the project. Right click on CloudEE Duke, select properties and Actions as shown below.

Configure the Execute Goals to  package wildfly-swarm:run, remove all the default properties and your’re all set. Run Project ( F6 ) will start the application using the WildFly Swarm Maven Plugin.

Debug WildFly Swarm Appliction

To enable debugging, you follow the same steps as described above, but in this case it is the Debug Project action you select.

Execute Goals is configured the same way as for Run, but in the Set Properties, you need to configure a debug port for WildFly Swarm. This is done by setting the  swarm.debug.port property, e.g. to 9000.

Debug Project  Ctrl-F5 will start the application in debug mode. Note that the execution will halt while waiting for the debugger to attach. See the screenshot below for how it will look in the log.

Select Debug->Attach Debugger from the menu in NetBeans. Change the value for Port to 9000 (or the value you chose in the previous step) and click OK.

To verify the setup, set a breakpoint at line 16 in the class  HelloWorldEndpoint.

Then navigate to http://localhost:8080/hello. The execution will stop at the breakpoint at line 16 in HelloWorldEndpoint.

Published on Java Code Geeks with permission by Ivar Grimstad, partner at our JCG program. See the original article here: Run and Debug a WildFly Swarm application from NetBeans

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