Configure Gradle toolchain auto-provisioning in build

[geeklenny]

Could not determine the dependencies of task ':spring-oxm:compileTestJava'.

Could not resolve all dependencies for configuration ':spring-oxm:testCompileClasspath'.
Failed to calculate the value of task ':spring-core:compileJava21Java' property 'javaCompiler'.
> No matching toolchains found for requested specification: {languageVersion=21, vendor=any, implementation=vendor-specific}.
> No locally installed toolchains match (see https://docs.gradle.org/8.1.1/userguide/toolchains.html#sec:auto_detection) and toolchain download repositories have not been configured (see https://docs.gradle.org/8.1.1/userguide/toolchains.html#sub:download_repositories).

[bclozel]

As of 6.1.x, the Spring Frammework build requires a JKD 21 install locally. See https://github.com/spring-projects/spring-framework/wiki/Build-from-Source#before-you-start

I'll repurpose this issue to check whether we can automate that with Gradle.

[geeklenny]

"To build you will need Git and JDK 17 and JDK 21 . Be sure that your JAVA_HOME environment variable points to the jdk17 folder extracted from the JDK download."

I've Installed jdk17 locally.

[bclozel]

It doesn't seem we can auto-provision toolchains for early access versions. We'll revisit this issue when JDK 21 is officially released.

In the meantime, please install a JDK 21 early access version in your environment so it can be detected by Gradle

[m14ebrskull5]

Add
org.gradle.java.installations.paths=${JDK21_PATH}
in gradle.properties solved this problem

[h183551]

Hi,
I am facing the same issue now.
I cloned the spring framework repo by doing
git clone https://github.com/spring-projects/spring-framework.git
I installed JDK17 JAVA_VERSION="17.0.2"
And downloaded JDK21 using the link in the build from source webpage
And assigned the path of JDK17 to JAVA_HOME
And added the path to jdk-21 and jdk21/bin to the environment variable PATH.
Then I run gradlew build as explained in the build from source web page.

When I did that I got this error

I tried setting auto update and auto download to false and tried setting path property in properties.gradle and tried by adding plugins in settings gradle but the issue persist.

This was done on a Windows machine..

All I wanted is to follow a Spring framework introduction course and wanted to run some code locally.
What do I need to do to solve this? The issue as I understand is that gradlew does not detect the JDK21.

[bclozel]

@h183551 have you tried the suggestion from @m14ebrskull5 ?

Also out of curiosity, why would you need to check out the Spring Framework project to learn about Spring? I think that https://spring.io/guides is a much better place.

If you would like to run some code locally, https://start.spring.io should give you what you need. You don't need to compile Spring Framework yourself to use it.