Java optional libraries

The @fabr-build/java plugin keeps some target types in optional libraries: .fabr files a project reads only where it includes them, after plugin @fabr-build/java;. Each section below is one library, with the line that includes it. Everything else the plugin provides is in Java targets and configuration.

This page is generated from fabr list-all, so it never drifts from the code.

lib/spring-boot.fabr

include @fabr-build/java:lib/spring-boot.fabr;

Targets

spring_boot_jar

Operations: build

targetdef spring_boot_jar {
  app        = REQUIRED PACKAGES;
  main_class = REQUIRED STRING;
  loader     = REQUIRED PACKAGES;
  launcher   = STRING default org.springframework.boot.loader.launch.JarLauncher;
}

A Spring Boot executable jar: the application’s jar and the jars of everything it requires under BOOT-INF/lib, and the Spring Boot loader’s classes at the root, started by java -jar.

Property	Type	Required	Default	Description
app	REQUIRED PACKAGES	yes		The application: a jar_package, with everything it requires.
main_class	REQUIRED STRING	yes		The class the application starts in, which the loader starts.
loader	REQUIRED PACKAGES	yes		The Spring Boot loader: spring-boot-loader, of the application’s Spring Boot release.
launcher	STRING		org.springframework.boot.loader.launch.JarLauncher	The loader’s class that starts the jar: Spring Boot 3.2 and later’s, by default. Before 3.2 it is org.springframework.boot.loader.JarLauncher.