Upgrade to Spring Boot 3

[mraible]

Overview of the feature request

Start upgrading to Spring Boot 3.

Motivation for or Use Case

Selfishly, I need it for a demo at ApacheCon, but I'd also like to hack on it during the JavaOne Hackergarten.

Related issues or PR

• Require Java 17 #19768
• Migrate to new Elasticsearch Java client for Spring Boot 3 #19934
• Migrate from Zalando to Spring Framework 6 problem support implementation  #19991
• Migrate from Spring Cloud Sleuth to Micrometer Tracing #20004
• Migrate to new Kafka Spring Cloud Stream support #20297

[DanielFran]

@mraible We should consider to migrate from zalando (problem and problem-spring-web) to spring-framework native implementation coming with spring-framework 6.0

@pascalgrimaud same for JHLite

[pascalgrimaud]

Thanks for the information @DanielFran !

[mraible]

I'm looking for issues to try and fix at the JavaOne Hackergarten, so this could be a candidate.

Does anyone know how to fix the compilation errors from Hibernate? Do we still need the fixed PostgreSQL dialects in jhipster-framework?

[DanielFran]

@mraible @pascalgrimaud This might be helpful: https://github.com/rstoyanchev/sandbox-rfc7807

[DanielFran]

I'm looking for issues to try and fix at the JavaOne Hackergarten, so this could be a candidate.

Does anyone know how to fix the compilation errors from Hibernate? Do we still need the fixed PostgreSQL dialects in jhipster-framework?

@mraible The fixed PostgreSQL dialect was needed for BLOB integration: https://github.com/jhipster/jhipster-bom/blob/main/jhipster-framework/src/main/java/tech/jhipster/domain/util/FixedPostgreSQL10Dialect.java#L37-L39

We just need to confirm hibernate 6 handles it now: https://docs.jboss.org/hibernate/orm/6.1/userguide/html_single/Hibernate_User_Guide.html#basic-blob

[mraible]

@mraible @pascalgrimaud This might be helpful: https://github.com/rstoyanchev/sandbox-rfc7807

@DanielFran This looks very helpful. Do you know if we need to extend the exception handler like
WebMvcExceptionHandler.java does in this example? Or can we just declare a bean that returns the parent exception handler?

Related: do we need to register this exception handler with Spring Security?

[mraible]

A fix for Spring Doc might exist in this PR:

springdoc/springdoc-openapi#1860

[DanielFran]

@mraible @pascalgrimaud This might be helpful: https://github.com/rstoyanchev/sandbox-rfc7807

@DanielFran This looks very helpful. Do you know if we need to extend the exception handler like WebMvcExceptionHandler.java does in this example? Or can we just declare a bean that returns the parent exception handler?

Related: do we need to register this exception handler with Spring Security?

Seems that WebMvcExceptionHandler.java example is like our current https://github.com/jhipster/generator-jhipster/blob/main/generators/server/templates/src/main/java/package/web/rest/errors/ExceptionTranslator.java.ejs
But we would need to implement those exceptions https://github.com/zalando/problem-spring-web/tree/main/problem-spring-web#configuration

[DanielFran]

A fix for Spring Doc might exist in this PR:

springdoc/springdoc-openapi#1860

We still have some spring.factories in the generator (for testing purposes with testcontainer I believe) to change also.
In the bom, I already migrated them when upgrading to 2.7.0

[mraible]

Seems that WebMvcExceptionHandler.java example is like our current https://github.com/jhipster/generator-jhipster/blob/main/generators/server/templates/src/main/java/package/web/rest/errors/ExceptionTranslator.java.ejs But we would need to implement those exceptions https://github.com/zalando/problem-spring-web/tree/main/problem-spring-web#configuration

It looks like Spring Boot might fix this by adding problem support by default. spring-projects/spring-boot#32634

[mraible]

I added new issues with bug bounties for Elasticsearch and the Zalando migration.

[omnya-alaa-eddin]

Hi Matt Raible ,
how can I pull your changes in order to generate new app that is internally using spring 3
Thanks for your effort regarding this fixes :)

[mraible]

git clone https://github.com/jhipster/generator-jhipster.git
cd generator-jhipster
npm install
npm link

Then, create a new directory and run jhipster in it.

mkdir app
cd app
jhipster

I've had a lot of questions about this recently. I plan to make a video this week.

[omnya-alaa-eddin]

Hi @mraible
Thanks for your response.
I'm trying to generate new app using the main branch and I'm expecting to get new app with spring 3
but I got the below error when trying to generate the new app using command (jhipster), Any Advice please ?

[mraible]

Can you please provide the steps you used to reproduce this error. Or, better yet, copy/paste your .yo-rc.json as a comment?

For a quick fix, you might try changing the base-url value to remove the trailing colon.

[pascalgrimaud]

You already provided the steps, @mraible
The main branch is simply broken when you want to generate a project from scratch. Just tried it few minutes ago:

[Tcharl]

Reproduced locally, I reopen

[pascalgrimaud]

It's not related to Spring Boot 3, so I think we should open a new dedicated ticket instead of reopening this one

[Tcharl]

PR provided, too lazy for a ticket, was too easy to fix directly ^^

[mshima]

This new bug is not related to sb3, but to the prompts/defaults refactoring.
I don’t know why this issue was reopen.

[Tcharl]

Closing in favor of the dedicated issue.

[mshima]

Half work was done by @mraible, but since he usually don't claim, I will claim full 😄
@DanielFran bounty claimed https://opencollective.com/generator-jhipster/expenses/148964

[DanielFran]

@mshima approved