I recently started learning java processors and tried using them with gradle, when I build the project I can see that the annotation processors jars(other modules) are printed(I added that in the app gradle file, you can see that below), but not executed. I don't know what I'm doing wrong...
I have a multi module project with the following structure
ROOT
|
|-app # contains main classes
|-annotations
|-processors
the processors project gradle file:
plugins {
id 'java'
}
group 'org.example'
version '1.0-beta'
repositories {
mavenCentral()
}
dependencies {
compileOnly project(":annotations")
implementation(project(":annotations"))
testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
}
test {
useJUnitPlatform()
}
the app gradle file
plugins {
id 'java'
}
group 'org.example'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
tasks.withType(JavaCompile) {
doFirst {
println "AnnotationProcessorPath for $name is ${options.getAnnotationProcessorPath().getFiles()}"
}
}
compileJava {
options.annotationProcessorPath = configurations.annotationProcessor
}
dependencies {
compileOnly project(":annotations")
implementation project(":annotations")
implementation project(":processors")
annotationProcessor project(":processors")
// annotationProcessor "org.example:processors:1.0-beta"
testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.0'
testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.0'
}
test {
useJUnitPlatform()
}
the annotations one is the default one
I have a processor which logs and creates a File
@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,"Testa asdfasdf");
...
And in my app module I have a class anotated with the @Builder annotation declared in the annotions module, so the Processor should get executed
Output of app gradle file
7:59:42 PM: Executing task 'Car.main()'...
> Task :annotations:compileJava UP-TO-DATE
> Task :annotations:processResources NO-SOURCE
> Task :annotations:classes UP-TO-DATE
> Task :annotations:jar UP-TO-DATE
> Task :processors:compileJava UP-TO-DATE
> Task :processors:processResources UP-TO-DATE
> Task :processors:classes UP-TO-DATE
> Task :processors:jar UP-TO-DATE
> Task :app:compileJava
AnnotationProcessorPath for compileJava is [/home/juan/ideaProjects/annotations/processors/build/libs/processors-1.0-beta.jar, /home/juan/ideaProjects/annotations/annotations/build/libs/annotations-1.0-SNAPSHOT.jar]
> Task :app:processResources UP-TO-DATE
> Task :app:classes
> Task :app:Car.main()
BUILD SUCCESSFUL in 242ms
8 actionable tasks: 2 executed, 6 up-to-date
7:59:42 PM: Task execution finished 'Car.main()'.
CodePudding user response:
After a couple hours it worked by creating the file javax.annotation.processing.Processor under the processors module
ROOT
|
--app # contains main classes
--annotations
--processors
|--main
|--java
|--resources
|--META-INF
|--services
|--javax.annotation.processing.Processor
|--test
setting its content to the processor path, in my case com.example.processors.BuilderProcessor