How use/set variant at pur Java/Springboot/Kotlin project

Neo · October 25, 2022, 12:15pm

Dear Sir

The Android project has buildtype(rlease/debug ) & Productflavor (dev/stage/prod)

like this

i found https://stackoverflow.com/ & gradle doc

get those ref :

https://docs.gradle.org/current/userguide/variant_model.html

the post at stackoverflow is too old ,can not use over gradle 6.X.X

so i ref gradle doc to create a demo

github.com

CMingTseng/variant-demo/blob/master/app/build.gradle

//import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

//plugins {
//    id("org.springframework.boot")
//    id("io.spring.dependency-management")
//    kotlin("jvm")
//    kotlin("plugin.spring") // id("org.jetbrains.kotlin.plugin.spring")
//}
apply plugin: "org.springframework.boot"//plugins{id("org.springframework.boot")}
apply plugin: "io.spring.dependency-management"//plugins{id("io.spring.dependency-management")}
apply plugin: "org.jetbrains.kotlin.jvm"//plugins{kotlin("jvm") // id("org.jetbrains.kotlin.jvm")}
apply plugin: "org.jetbrains.kotlin.plugin.spring" // plugins{kotlin("plugin.spring") // id("org.jetbrains.kotlin.plugin.spring")}

group = "cn.numeron"
version = "0.0.1-SNAPSHOT"
//Ref : https://medium.com/@lunay0ung/solved-intellj%EC%97%90%EC%84%9C-gradle%EC%9D%84-%EC%9D%B4%EC%9A%A9%ED%95%98%EC%97%AC-spring-boot-jar-%EB%A7%8C%EB%93%A4%EA%B8%B0-feat-kotlin-ec3c01eb6c97
//Ref : https://www.baeldung.com/spring-boot-main-class
springBoot {
    mainClass.set("cn.numeron.variant.VariantDemoApplicationKt")
}

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But something is wrong !!

as image

i set two variant ( dev/actuator ) and put differnet spring controller class at their sourcesets

but when generate jar/bootjar

can not select taget variant
the jar file only include main sourceset , the class of variants (dev/actuator ) lost

can help me understand & fix it ?

THX

Vampire · October 25, 2022, 3:31pm

Those are feature variants for libraries.
So you make library A with feature variant X, Y, and Z.
And then you develop application B where you say I want features X and Y of A.
They are not feature variants the spring boot plugin would handle.
Or at least I’d wonder if it does.

Neo · October 25, 2022, 3:50pm

Dear Sir

the gradle variant is for libray not for application ?

so it is differnet Andoid gradle Plugin ( andorid application & andorid library all can use buildtype & Productflavor ) ?

can not use in application

THX

Vampire · October 26, 2022, 1:13pm

Yes, exactly. The AGP buildtypes and flavors have nothing to do with feature variants, but are a completely separate approach exclusive to the AGP.