How to make QueryDSL and Lombok work together

Question

When a method or variable is annotated with Lombok annotation, the maven plugin will complain by processing the source generation for JPA.

I get this kind of failure

Answer 1

Below pom snippet works for me with Querydsl, Lombok, Mapstruct all together by maven-compiler-plugin

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                    <annotationProcessors>
                        <annotationProcessor>lombok.launch.AnnotationProcessorHider$AnnotationProcessor</annotationProcessor>
                        <annotationProcessor>com.querydsl.apt.jpa.JPAAnnotationProcessor</annotationProcessor>
                        <annotationProcessor>org.mapstruct.ap.MappingProcessor</annotationProcessor>
                    </annotationProcessors>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>com.querydsl</groupId>
                            <artifactId>querydsl-apt</artifactId>
                            <version>${querydsl.version}</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>${org.mapstruct.version}</version>
                        </path>
                        <path>
                            <groupId>javax.annotation</groupId>
                            <artifactId>javax.annotation-api</artifactId>
                            <version>1.3.1</version>
                        </path>
                        <path>
                            <groupId>org.eclipse.persistence</groupId>
                            <artifactId>javax.persistence</artifactId>
                            <version>2.0.0</version>
                        </path>

                    </annotationProcessorPaths>
                </configuration>
            </plugin>

Answer 2

here is the syntax for GRADLE users (maven users please have a look at the other answers)

// this adds lombok correctly to your project then you configure the jpa processor

plugins {
 ...
  id 'io.franzbecker.gradle-lombok' version '1.7'
}
project.afterEvaluate {

  project.tasks.compileQuerydsl.options.compilerArgs = [
          "-proc:only",
          "-processor", project.querydsl.processors() +
                  ',lombok.launch.AnnotationProcessorHider$AnnotationProcessor'
  ]
}

here is a working version of QueryDSL and Lombok. Dependencies are imported by plugins, therefore no dependencies need to be declared:

buildscript {
    repositories {
        mavenCentral()
    }
}

plugins {
    id 'io.franzbecker.gradle-lombok' version '1.7'
    id "com.ewerk.gradle.plugins.querydsl" version "1.0.9"
}

querydsl {
    jpa = true
}

// plugin needed so that the
project.afterEvaluate {
    project.tasks.compileQuerydsl.options.compilerArgs = [
            "-proc:only",
            "-processor", project.querydsl.processors() +
                    ',lombok.launch.AnnotationProcessorHider$AnnotationProcessor'
    ]
}
dependencies {
    compile group: 'com.querydsl', name: 'querydsl-jpa', version: '4.1.3'
}

Answer 3

This solution worked for me. Add lombok.launch.AnnotationProcessorHider$AnnotationProcessor in your apt-maven-plugin configuration.

<plugin>
    <groupId>com.mysema.maven</groupId>
    <artifactId>apt-maven-plugin</artifactId>
    <executions>
        <execution>
            <goals>
                <goal>process</goal>
            </goals>
            <configuration>
                <outputDirectory>target/generated-sources/java</outputDirectory>
                <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor,lombok.launch.AnnotationProcessorHider$AnnotationProcessor</processor>
            </configuration>
        </execution>
    </executions>
</plugin>

It seems also to be working the same way with gradle: See https://github.com/ewerk/gradle-plugins/issues/59#issuecomment-247047011