For a completed project, SpringBoot + Lombok + MapStruct in 2025-01. (see version in pom)

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.4.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.redfrog</groupId>
    <artifactId>demo-mapstruct</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-mapstruct</name>
    <description>demo-mapstruct</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>21</java.version>
        <!--        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>-->
        <!--        <maven.compiler.source>1.8</maven.compiler.source>-->
        <!--        <maven.compiler.target>1.8</maven.compiler.target>-->
        <org.mapstruct.version>1.6.3</org.mapstruct.version>
        <!--        <org.projectlombok.version>1.18.36</org.projectlombok.version>-->
        <lombok-mapstruct-binding.version>0.2.0</lombok-mapstruct-binding.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct</artifactId>
            <version>${org.mapstruct.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>${org.mapstruct.version}</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok-mapstruct-binding</artifactId>
                            <version>${lombok-mapstruct-binding.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

• Note:

  • in intellij, you may need to enable annotation processing, and:

    • either Obtain processors from project classpath

    • or locate the jar file manually by Processor path:

      C:\Users\nshln\.m2\repository\org\mapstruct\mapstruct-processor\1.6.3\mapstruct-processor-1.6.3.jar
      ;C:\Users\nshln\.m2\repository\org\mapstruct\mapstruct\1.6.3\mapstruct-1.6.3.jar
      ;C:\Users\nshln\.m2\repository\org\projectlombok\lombok\1.18.36\lombok-1.18.36.jar
      ;C:\Users\nshln\.m2\repository\org\projectlombok\lombok-mapstruct-binding\0.2.0\lombok-mapstruct-binding-0.2.0.jar
      

    • 

  • do not attempt to remove the <artifactId>lombok-mapstruct-binding</artifactId> (at least didnt work for me)

  • do not attempt to put the <artifactId>mapstruct-processor</artifactId> in <dependency> (at least didnt work for me)

• Reference

  • https://github.com/mapstruct/mapstruct-examples/blob/main/mapstruct-lombok/pom.xml

  • // Quick Guide to MapStruct | Baeldung
    // https://www.baeldung.com/mapstruct
    //
    // java - MapStruct - Cannot find implementation - Stack Overflow
    // https://stackoverflow.com/questions/61710510/mapstruct-cannot-find-implementation
    //
    // https://www.aliyun.com/sswb/541358.html
    //
    // https://developer.aliyun.com/article/1350244?spm=5176.26934562.main.2.69cc72eeT6HBiK
    //
    // Lombok/Mapstruct problem: Cannot find symbol · Issue #1270 · mapstruct/mapstruct
    // https://github.com/mapstruct/mapstruct/issues/1270
    //
    // https://github.com/ichengzi/ichengzi.github.io/issues/46
    //
    // java - What is the best way to convert entity to dto? For Spring REST API Application - Stack Overflow
    // https://stackoverflow.com/questions/69364258/what-is-the-best-way-to-convert-entity-to-dto-for-spring-rest-api-application
    //
    // Spring Boot Mapstruct | Lombok & Mapstruct with Spring Boot CRUD API | Java Bean Mappings - YouTube
    // https://www.youtube.com/watch?v=EVCrLp-k494
    //
    // java - Upgrading to Spring Boot 3 causing annotation processing errors - Stack Overflow
    // https://stackoverflow.com/questions/79288971/upgrading-to-spring-boot-3-causing-annotation-processing-errors
    //
    // [BUG] lombok 1.18.30 with Mapsrtruct 1.5.5.Final with Java 21 Fails to work! (made tests) · Issue #3569 · projectlombok/lombok
    // https://github.com/projectlombok/lombok/issues/3569
    //
    // mapstruct-examples/mapstruct-lombok/pom.xml at main · mapstruct/mapstruct-examples
    // https://github.com/mapstruct/mapstruct-examples/blob/main/mapstruct-lombok/pom.xml
    //
    // Frequently Asked Questions (FAQ) – MapStruct
    // https://mapstruct.org/faq/
    //
    // Maven Central: org.projectlombok:lombok-mapstruct-binding
    // https://central.sonatype.com/artifact/org.projectlombok/lombok-mapstruct-binding?smo=true
    //
    // MapStruct 1.6.3 Reference Guide
    // https://mapstruct.org/documentation/stable/reference/html/