[Gradle] GRADLE 5 + BOOT 2.x + Lombok 빌드 이슈

▣ 이슈상황

• Gradle 버젼업 하기 전에 잘 빌드되는 소스 코드가 오류가 난다.
• 오류 메시지 :: cannot find symbol

▣ Project 설정 후 테스트 과정에서 오류

// build.gradle
compile("org.projectlombok:lombok")

// Java class with lombok annotation
@Getter
public class TestDto {

    private String name;
    private int amount;

    @Builder
    public TestDto(String name, int amount) {
        this.name = name;
        this.amount = amount;
    }
}

▣ Error Message

Testing started at 10:58 AM ...
> Task :cleanTest
> Task :compileJava
> Task :processResources NO-SOURCE
> Task :classes
> Task :compileTestJava FAILED
book/web/dto/DtoTest.java:20: error: cannot find symbol
                .builder()
                ^
  symbol:   method builder()
  location: class TestDto
book/web/dto/DtoTest.java:25: error: cannot find symbol
        assertThat(dto.getName()).isEqualTo(name);
                      ^
  symbol:   method getName()
  location: variable dto of type TestDto
book/web/dto/DtoTest.java:26: error: cannot find symbol
        assertThat(dto.getAmount()).isEqualTo(amount);
                      ^
  symbol:   method getAmount()
  location: variable dto of type TestDto
3 errors
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':compileTestJava'.
> Compilation failed; see the compiler error output for details.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 0

▣ 해결방안

1. build.gradle 을 수정한다.

• Reference
  • https://projectlombok.org/setup/gradle

dependencies {
    compileOnly("org.projectlombok:lombok")
    testCompileOnly("org.projectlombok:lombok")
    annotationProcessor("org.projectlombok:lombok")
    testAnnotationProcessor("org.projectlombok:lombok")
}

2. gradle version 을 낮춘다. (Not Recommended)

./gradlew wrapper --gradle-version 4.10.2