Add support for java-cfenv

[markpollack]

The java-cfenv library is the replacement for the cloud foundry connector libraries, which are now in maintenance mode. New functionality will be added to only to the java-cfenv library, for example for volume services and support for CF's SSO based on Spring Security 5 oauth.

The java-cfenv library provides a more Boot centric way to connect to Cloud Foundry services. You can read more about it from the blog https://spring.io/blog/2019/02/15/introducing-java-cfenv-a-new-library-for-accessing-cloud-foundry-services and on the github site - https://github.com/pivotal-cf/java-cfenv

[making]

waiting for pivotal-cf/java-cfenv#76
cc: @dyroberts

[pivotal-david-osullivan]

Hi all, adding support for java-cfenv was previously waiting on cloudfoundry/java-buildpack#779, however this is no longer blocked as per the latest comment.

Could adding this to the Initializr be revisited?

[wilkinsona]

My reading of cloudfoundry/java-buildpack#779 is that decision has been made about the path things are going to take, but no steps down that path have been taken. As I understand it, that means that the buildpacks will still use Spring Auto Reconfiguration by default and that users would still have to disable SAR to use java-cfenv so things haven't really changed for users.

[bclozel]

Spring Auto Reconfiguration & Spring Cloud Connectors will be still the default until March 2023, we need to wait for this new date to consider a change here.
cloudfoundry/java-buildpack#951 (comment)

[snicoll]

This was opened 4 years ago without any actionable step so I am going to close this now.

[anthonydahanne]

Just an update on what the Java Buildpack for CloudFoundry injects in 2024 to a spring boot app (that neither contains SAR / SCC nor Java-cfenv)

• Spring Boot 2: it'll still get SAR / SCC
• Spring Boot 3 and later: it'll get java-cfenv

Back to start.spring.io, that really does not matter if it does not provide the option for users to add Java-cfenv; it will be injected by the CF JBP at deployment time.