如何在Gradle构建中为测试范围映射器接口生成Mapstruct映射器实现？

Question

我有一个简单的Java单一模块Gradle项目，其中使用Mapstruct进行Java映射。我的build.gradle样子是这样的：

plugins {
    id 'java-library'
    id 'groovy'
    id 'net.ltgt.apt' version '0.20'
}

repositories {
    jcenter()
}

dependencies {
    implementation 'org.mapstruct:mapstruct-jdk8:1.2.0.Final'
    annotationProcessor 'org.mapstruct:mapstruct-processor:1.2.0.Final'

    testImplementation 'org.codehaus.groovy:groovy-all:2.5.5'

    // Use the awesome Spock testing and specification framework even with Java
    testImplementation 'org.spockframework:spock-core:1.2-groovy-2.5'
    testImplementation 'junit:junit:4.12'
}

sourceSets {
    main {
        java {
            srcDirs "${project.buildDir}/generated/sources/annotationProcessor/java/main"
        }
    }
    test {
        java {
            srcDirs "${project.buildDir}/generated/sources/annotationProcessor/java/test"
        }
    }
}

我的源文件夹包含以下Java源代码：

src
??? main
?   ??? java
?   ?   ??? ch
?   ?       ??? silviowangler
?   ?           ??? Person.java
?   ?           ??? SomeMapper.java
?   ?           ??? User.java
?   ??? resources
??? test
    ??? groovy
    ?   ??? ch
    ?       ??? silviowangler
    ??? java
    ?   ??? ch
    ?       ??? silviowangler
    ?           ??? YoloMapper.java
    ??? resources

SomeMapper 是一个简单的映射器界面，看起来像这样

@Mapper
public interface SomeMapper {

    @Mappings({
            @Mapping(target = "firstName", source = "nickname"),
            @Mapping(target = "surname", ignore = true),
            @Mapping(target = "dateOfBirth", ignore = true)
    })
    Person fromString(User user);
}

而YoloMapper驻留在测试范围看起来像这样

@Mapper
public interface YoloMapper {

    String fromLocalDate(LocalDate localDate);
}

当我运行时./gradlew clean cTJ，构建成功完成，并且注释处理器为生成映射器实现，SimpleMapper但不会为生成任何东西YoloMapper。在build构建模样后的文件夹

build
??? classes
?   ??? java
?       ??? main
?       ?   ??? ch
?       ?       ??? silviowangler
?       ?           ??? Person.class
?       ?           ??? SomeMapper.class
?       ?           ??? SomeMapperImpl.class
?       ?           ??? User.class
?       ??? test
?           ??? ch
?               ??? silviowangler
?                   ??? YoloMapper.class
??? generated
?   ??? sources
?       ??? annotationProcessor
?           ??? java
?               ??? main
?               ?   ??? ch
?               ?       ??? silviowangler
?               ?           ??? SomeMapperImpl.java
?               ??? test
??? tmp
    ??? compileJava
    ??? compileTestJava

如何使Gradle告诉注释处理器在测试范围内生成Mapstruct映射器实现？

Answer 1

您需要进行配置testAnnocationProcess，如下：

dependencies{

    // for Main sources set
    implementation 'org.mapstruct:mapstruct-jdk8:1.2.0.Final'
    annotationProcessor 'org.mapstruct:mapstruct-processor:1.2.0.Final'

    // for Test sources set  
    testAnnotationProcessor "org.mapstruct:mapstruct-processor:1.2.0.Final"

}