MapStruct和Lombok无法一起使用 [英] MapStruct and Lombok not working together
问题描述
正在使用的技术堆栈:
Java 8 MapStruct:1.2.0.Final 龙目岛:1.16.18 IDE:IntelliJ-Lombok插件已安装
Java 8 MapStruct : 1.2.0.Final Lombok: 1.16.18 IDE: IntelliJ - Lombok Plugin already installed
- 最初，当我删除getter和setter并添加
@Getter和@Setter批注时，遇到了问题，mapstruct无法找到该属性并说:Unknown property "id" in result type com.vg.once.dto.OneDto. Did you mean "null"? - 我知道Lombok 1.16.14或更高版本与MapStruct 1.2.0.Beta1或更高版本兼容并且可以一起工作，但是我的版本较新，那么仍然出现了问题.
- 我已经尝试过的另一个解决方案是运行Lombok的Delombok插件，但是仍然出现相同的问题.
- Initially, I faced issues when I removed getters and setters and added
@Getterand@Setterannotation,mapstructis not able to find the property and says:Unknown property "id" in result type com.vg.once.dto.OneDto. Did you mean "null"? - I came to know that Lombok 1.16.14 or newer along with MapStruct 1.2.0.Beta1 or newer are compatible and can work together, but my versions are newer then the desired still the issue is arising.
- One more solution that I have already tried is running Lombok's Delombok plugin, but still, the same issue is arising.
下面是项目文件:
实体对象: One.java :
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class One {
private int id;
private Integer version;
private int projectId;
private String title;
private String code;
private int sortOrder;
}
DTO对象: OneDTO.java :
import lombok.Getter;
import lombok.Setter;
@Getter
@Setter
public class OneDto {
private int id;
private Integer version;
private int projectId;
private String title;
private String code;
private int sortOrder;
}
地图类: OneMapper.java
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;
import com.vg.once.dto.OneDto;
import com.vg.once.entity.One;
@Mapper
public interface OneMapper {
@Mapping(target="id", source="one.id")
OneDto createOne (One one);
}
pom.xml
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.vg</groupId>
<artifactId>mapstruct</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Mapstruct-test</name>
<properties>
<java.version>1.8</java.version>
<org.mapstruct.version>1.2.0.Final</org.mapstruct.version>
<org.projectlombok.version>1.16.18</org.projectlombok.version>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-jdk8</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-maven-plugin</artifactId>
<version>1.16.18.1</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>delombok</goal>
</goals>
</execution>
</executions>
<configuration>
<sourceDirectory>src/main/java</sourceDirectory>
<addOutputDirectory>false</addOutputDirectory>
<outputDirectory>${project.build.directory}/delombok</outputDirectory>
<encoding>UTF-8</encoding>
<skip>false</skip>
<verbose>false</verbose>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
构建跟踪:
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Mapstruct-test 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- lombok-maven-plugin:1.16.18.1:delombok (default) @ mapstruct ---
[INFO] Delombok complete.
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ mapstruct ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.6.1:compile (default-compile) @ mapstruct ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 5 source files to /home/vivekgupta/Documents/workspaces/mapstruct-test/mapstruct/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/vivekgupta/Documents/workspaces/mapstruct-test/mapstruct/src/main/java/com/vg/once/mapper/OneMapper.java:[12,9] Unknown property "id" in result type com.vg.once.dto.OneDto. Did you mean "null"?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.637 s
[INFO] Finished at: 2017-12-06T19:23:53+05:30
[INFO] Final Memory: 19M/235M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:compile (default-compile) on project mapstruct: Compilation failure
[ERROR] /home/vivekgupta/Documents/workspaces/mapstruct-test/mapstruct/src/main/java/com/vg/once/mapper/OneMapper.java:[12,9] Unknown property "id" in result type com.vg.once.dto.OneDto. Did you mean "null"?
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
请分享我如何才能将Lombok和MapStruct一起使用?
please share how can i get this working using both Lombok and MapStruct together?
推荐答案
之所以不起作用，是因为Maven仅使用MapStruct处理器，而不使用Lombok处理器. annotationProcessorPaths告诉Maven应该使用哪个处理器.
The reason why it does not work is because Maven only uses the MapStruct processor and not the Lombok one. The annotationProcessorPaths tells maven which processors it should use.
delombok不执行任何操作，因为您最终每个类只有2个文件，我认为maven编译器看不到它们.
The delombok does nothing as you are ending up with 2 files per class and I think that the maven compiler does not see them.
您有2个选择:
选项1:在annotationProcessorPaths
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
选项2:
将mapstruct-processor依赖项添加到您的依赖项中，然后删除annotationProcessorPaths.这样，maven编译器将选择依赖项中的所有注释处理器.
Add the mapstruct-processor dependency to your dependencies and remove the annotationProcessorPaths. This way the maven compiler will pick up all the annotation processors that are in your dependencies.
我建议您使用选项1，因为可以确定您在代码中没有使用某些MapStruct可传递依赖项和内部类.
I would advise in using Option 1, as with that you can be certain that you are not using some MapStruct transitive dependencies and internal classes in your code.
To make sure that the IntelliJ annotation processing also works you will have to add the mapstruct-processor as a provided dependency due to IDEA-150621. IntelliJ in the moment does not use the annotationProcessorPaths from Maven to configure the project correctly.
这篇关于MapStruct和Lombok无法一起使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
