"Warning: The following options were not recognized by any processor" for mapstruct

Question

I have a spring boot application with mapstruct where I get this warning on the maven-compiler-plugin testCompile phase:

[WARNING] The following options were not recognized by any processor: '[mapstruct.suppressGeneratorTimestamp]'

As I don't want warnings in my code I have been searching to solve this issue but the only thing that worked this far is to use <showWarnings>false</showWarnings>

我应该怎么做才能解决此警告而不将其静音？

申请文件：

pom.xml：

<project>
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.0</version>
    </parent>

    <groupId>com.example</groupId>
    <artifactId>test</artifactId>
    <version>1.0.0</version>

    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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>1.5.3.Final</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.10.1</version>
                <configuration>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>1.5.3.Final</version>
                        </path>
                    </annotationProcessorPaths>

                    <showWarnings>true</showWarnings>
                    <compilerArgs>
                        <arg>
                            -Amapstruct.suppressGeneratorTimestamp=true
                        </arg>
                    </compilerArgs>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Event.java ：具有 1 个字段的 pojo：id

EventDTO.java：具有 1 个字段的 pojo：id

我的映射器：

import org.mapstruct.Mapper;

@Mapper(componentModel = "spring")
public interface EventMapper {
    EventDTO eventToEventDto(Event event);
}

映射器上的单元测试：

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

class EventMapperTest {
    @Test
    void eventToEventDto() {
        Event event = createEvent();

        EventMapper mapper = new EventMapperImpl();
        EventDTO eventDTO = mapper.eventToEventDto(event);

        assertEquals(event.getId(), eventDTO.getId());
    }

    private Event createEvent() {
        Event event = new Event();
        event.setId(15);
        return event;
    }
}

Answer 1

此警告很可能是因为测试代码中没有要映射的文件而引起的。将注释处理信息限制为编译任务而不是为test-compile和compile任务都设置它应该可以解决此问题。

如果我查对了，编译任务应该是使用 id 执行default-compile。因此，以下配置应该可以正常工作，而不会在任务中发出警告test-compile：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.10.1</version>
    <executions>
        <execution>
            <id>default-compile</id>
            <configuration>
                <annotationProcessorPaths>
                    <path>
                        <groupId>org.mapstruct</groupId>
                        <artifactId>mapstruct-processor</artifactId>
                        <version>1.5.3.Final</version>
                    </path>
                </annotationProcessorPaths>

                <showWarnings>true</showWarnings>
                <compilerArgs>
                    <arg>
                        -Amapstruct.suppressGeneratorTimestamp=true
                    </arg>
                </compilerArgs>
            </configuration>
        </execution>
    </executions>
</plugin>