Re: is it possible to debug GWT projects (breakpoints, step through code etc) ?

btw:  "appengine:run" is deprecated.  You won't be able to do any updates to your app until you upgrade.  https://cloud.google.com/appengine/docs/legacy/standard/java/maven-reference  But you probably already knew this.  🙂

On Wednesday 26 June 2024 at 11:23:00 am UTC+10 Craig Mitchell wrote:

As Ralph says, for the client, you can use the Chrome debugger, but if you didn't want to, the Eclipse SDBG plugin should still work.  Or if you use IntelliJ, the paid Ultimate version comes with a JS debuger (I've not seen a JS debugger for the free Community version).

For the server, you might find it easier to put the flags Ralph talks about into your pom file.  Eg: If you use springboot, you can do this:

<plugin>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-maven-plugin</artifactId>
  <executions>
    <execution>
      <goals>
        <goal>repackage</goal>
      </goals>
    </execution>
  </executions>
  <configuration>
    <skip>false</skip>
    <jvmArguments>
      -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000 <!-- Allow debugging -->
      --add-opens java.base/java.lang=ALL-UNNAMED <!-- Allow exceptions to have java.lang details serialised -->
    </jvmArguments>
  </configuration>
</plugin>

On Tuesday 25 June 2024 at 11:09:20 pm UTC+10 Ralph Fiergolla wrote:

Hi! Unless you want to invest time and effort in getting eclipse plugins up and running, I would suggest using your browser's development tools (Ctrl+Shift+I in Chrome/Edge) to debug the client side. Thanks to source maps it will show your JAVA source code when debugging. 

To debug the server side, you need to start your server with "-Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=8000,suspend=n" and create a debug configuration to connect to port 8000 in Eclipse.

Good luck

Ralph

On Mon, Jun 24, 2024 at 11:19 AM 'Daniel Webb' via GWT Users <google-we...@googlegroups.com> wrote:

Hi, 

Is it possible to debug GWT projects - setting breakpoints and stepping through code? This would be server and/or client debugging.

We've just had our internal GWT based app updated and it now uses maven to run (clean install appengine:run). The eclipse plugin based debugging technique that I used to use no longer seems to work.

Thanks for any advice, I really like GWT but I'm lost as to how it all works!

Daniel

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