导入的Maven模块中的龙目岛

Question

I have following maven structure:

parent-module
|-model-module
|-model-contributor-module

In model-module I have entities that annotated with @lombok.Data . When I make mvn clean install on model-module everything is ok. Second inner module model-contributor-module contains model-module in dependencies. When I try to do the same build on model-contributor-module , I receive an error cannot find symbol .

pom.xml for model-module :

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <scope>provided</scope>
</dependency>

And pom.xml for model-contributor-module :

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <scope>provided</scope>
</dependency>
.....
<pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok-maven-plugin</artifactId>
                <version>1.16.8.0</version>
            </plugin>
        </plugins>
    </pluginManagement>
....
    <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.5.1</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok-maven-plugin</artifactId>
            <version>1.16.8.0</version>
            <configuration>
                <encoding>UTF-8</encoding>
            </configuration>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>testDelombok</goal>
                        <goal>delombok</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

How to fix these compilation errors?

[ERROR] /Users/superuser/Documents/workspace/project/test/src/main/java/com/company/services/impl/MyServiceImpl.java:[291,65] cannot find symbol
[ERROR] symbol:   method getUserId()

Answer 1

Move that lombok dependency into the parent pom's dependencyManagement element so it can be inherited by the child modules. You have the plugin available in all modules, but it looks like the lombok dependency is only available in model-module.

<dependencyManagement>
  <dependencies>
   ...
   <dependency> 
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <scope>provided</scope>
   </dependency>
  </dependencies>
</dependencyManagement>