spring-boot-REST | # # Create a User table | Application Framework library

I have the following code:

The goal is to run two containers of publisher-app. One container should me mapped to port 8080 on host machine, and the other on 8081. Here is the docker-compose:

I am running the project by using the startup.bat option in tomcat 10 windows. I did not modify my code from javax to Jakarta As there are lots of codes getting changed if I modify the code also not able to find out spring dependency for Jakarta. As per client requirement, I Have to deploy the Application on tomcat10 and java8.previously we are using tomcat9 and java8 for the application. As per tomcat10 instructions if we deploy an application that is using javax then tomcat10 automatically converts the javax to Jakarta. I follow the process by giving the following link : https://www.appsdeveloperblog.com/deploy-a-spring-boot-rest-app-as-a-war-to-tomcat-10/

I have a custom advice to handle exceptions from controllers copied from REST API Error Handling and a method to handle DataIntegrityViolationException:

I am following this tutorial:

https://kotlinlang.org/docs/jvm-spring-boot-restful.html#proceed-to-the-next-tutorial

Its a nice step by step for sure. My intelliJ project compiles and runs.

THis is my build file:

I know this question might have an answer but am a newbie to spring boot. I need to do internalization to my rest endpoints and I followed this blog to implement internalization but the problem is one. The language does not change per request it only change only after application launch that is suppose at launch in my post man the language was fr that will work but after I change fr to pt (Portuguese) it does not pick pt it still remains with fr. Here is my code that am working with. I have created 4 different messages.properties that is messages_fr.properties, messages_pt.properties, messages_sw.properties under resources dir

I'm implementing a REST API in Kotlin, using two tutorials (1, 2).

The first one doesn't even include a main function to be the app's entry point.
The second, however, does include the following file, which isn't connected in any way (at least not one that I see) to the controller.

I'm adding an API to an existing Spring Boot project using @RestController.

My Spring Boot experience is: This is my first time using it.

The RestController works fine when I make a properly formed request but throws an error if the request is not correct (this is what I would expect). However, I can't figure out how to give a meaningful error response to a user.

This is the Controller class:

I'm working on the exception handling in my application. In my service I have this method: