Lombok and AspectJ

Question

Im trying to use Lombok in combination with AspectJ and Maven. So, what's the problem? When i use the AspectJ Maven Plugin (www.mojohaus.org/aspectj-maven-plugin/), it takes the sources and compiles them and ignores changes made by Lombok. I followed this tutorial and came up with this code and AspectJ works, but Lombok dies with this message:

[WARNING] You aren't using a compiler supported by lombok, so lombok will not work and has been disabled.
Your processor is: org.aspectj.org.eclipse.jdt.internal.compiler.apt.dispatch.BatchProcessingEnvImpl
Lombok supports: sun/apple javac 1.6, ECJ

So, does anyone know how to get Lombok in combination with AspectJ working?

[EDIT] IT WORKS! Now, it seems to work when i package the project to a fat jar. But it still does not work with maven:test and IntelliJ. I'd be happy if anyone had a fix for this.

Best regards!

Answer 1

Use ajc to process classes.

<plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>aspectj-maven-plugin</artifactId>
            <version>1.11</version>

            <configuration>
                <complianceLevel>8</complianceLevel>
                <source>8</source>
                <target>8</target>
                <showWeaveInfo>true</showWeaveInfo>
                <verbose>true</verbose>
                <Xlint>ignore</Xlint>
                <encoding>UTF-8</encoding>


                <!-- IMPORTANT-->
                <excludes>
                    <exclude>**/*.java</exclude>
                </excludes>
                <forceAjcCompile>true</forceAjcCompile>
                <sources/>
                <!-- IMPORTANT-->


                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>you.own.aspect.libary</groupId>
                        <artifactId>your-library</artifactId>
                    </aspectLibrary>
                </aspectLibraries>

            </configuration>
            <executions>
                <execution>
                    <id>default-compile</id>
                    <phase>process-classes</phase>
                    <goals>
                        <!-- use this goal to weave all your main classes -->
                        <goal>compile</goal>
                    </goals>
                    <configuration>
                        <weaveDirectories>
                            <weaveDirectory>${project.build.directory}/classes</weaveDirectory>
                        </weaveDirectories>
                    </configuration>
                </execution>
                <execution>
                    <id>default-testCompile</id>
                    <phase>process-test-classes</phase>
                    <goals>
                        <!-- use this goal to weave all your test classes -->
                        <goal>test-compile</goal>
                    </goals>
                    <configuration>
                        <weaveDirectories>
                            <weaveDirectory>${project.build.directory}/test-classes</weaveDirectory>
                        </weaveDirectories>
                    </configuration>
                </execution>
            </executions>
        </plugin>

Answer 2

Use delombok to generate normal source code. And then proceed as you would if Lombok were not being used.

Store your Lombok-annotated code in main/src/lombok (for example) and then have the delombok plugin convert these annotations into normal code and into the directory /delomboked (for example).

Answer 3

I tried various solutions, finally specifying the javac compiler option like the below one worked

Answer 4

This works for me with command line mvn clean install, but in Eclipse IDE, the problem is not solved, eg. log is not correctly recognized for @Slf4j.

<plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>aspectj-maven-plugin</artifactId>
            <version>1.10</version>
            <configuration>
                <verbose>true</verbose>
                <showWeaveInfo>true</showWeaveInfo>
                <source>1.7</source>
                <target>1.7</target>
                <complianceLevel>1.7</complianceLevel>
                <!-- <encoding>UTF-8</encoding> -->
                <verbose>false</verbose>
                <Xlint>ignore</Xlint>
                <outxml>true</outxml>
                <forceAjcCompile>true</forceAjcCompile>
                <reweavable>false</reweavable>
                <aspectLibraries>
                    <aspectLibrary> 
                        <groupId>com.aspectj.library.yours</groupId>
                        <artifactId>your-library</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <!-- this is important: start-->
                <sources/>
                <weaveDirectories>
                    <weaveDirectory>${project.build.directory}/classes</weaveDirectory>
                </weaveDirectories>
                <!-- this is important: end-->
            </configuration>
            <executions>
                <execution>
                    <!-- The right phase is very important! Compile and weave aspects after all classes compiled by javac -->
                    <phase>process-classes</phase>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
            <dependencies>
                <dependency>
                    <groupId>org.aspectj</groupId>
                    <artifactId>aspectjweaver</artifactId>
                    <version>1.8.9</version>
                </dependency>
                <dependency>
                    <groupId>org.aspectj</groupId>
                    <artifactId>aspectjtools</artifactId>
                    <version>1.8.9</version>
                </dependency>
            </dependencies>
        </plugin>