[英]Maven mapstruct issue when running mvn install/mvn test
所以,我在我的 maven 项目中使用 mapstruct api。
这是我的应用程序pom.xml配置:
<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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>org.mapstruct.examples.lombok</groupId>
<artifactId>mapstruct-examples-lombok</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<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>1.4.1.Final</org.mapstruct.version>
<org.projectlombok.version>1.18.16</org.projectlombok.version>
<lombok-mapstruct-binding.version>0.1.0</lombok-mapstruct-binding.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
<!-- lombok dependencies should not end up on classpath -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
<scope>provided</scope>
</dependency>
<!-- IntelliJ pre 2018.1.1 requires the mapstruct processor to be present as provided dependency -->
<!-- <dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
<scope>provided</scope>
</dependency>-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
<version>4.13.1</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<!-- See https://maven.apache.org/plugins/maven-compiler-plugin/compile-mojo.html -->
<!-- Classpath elements to supply as annotation processor path. If specified, the compiler -->
<!-- will detect annotation processors only in those classpath elements. If omitted, the -->
<!-- default classpath is used to detect annotation processors. The detection itself depends -->
<!-- on the configuration of annotationProcessors. -->
<!-- -->
<!-- According to this documentation, the provided dependency processor is not considered! -->
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${org.projectlombok.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>${lombok-mapstruct-binding.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>target/generate-sources</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
我的 Pojo 课程:
SimpleSource.java
public class SimpleSource {
private String name;
private String description;
// getters and setters
}
SimpleDestination.java
public class SimpleDestination {
private String name;
private String description;
// getters and setters
}
映射器接口:
SimpleSourceDestinationMapper.java
@Mapper
public interface SimpleSourceDestinationMapper {
SimpleDestination sourceToDestination(SimpleSource source);
SimpleSource destinationToSource(SimpleDestination destination);
}
它生成正确的实现 class:
SimpleSourceDestinationMapperImpl.java (生成)
public class SimpleSourceDestinationMapperImpl implements SimpleSourceDestinationMapper {
@Override
public SimpleDestination sourceToDestination(SimpleSource source) {
if ( source == null ) {
return null;
}
SimpleDestination simpleDestination = new SimpleDestination();
simpleDestination.setName( source.getName() );
simpleDestination.setDescription( source.getDescription() );
return simpleDestination;
}
@Override
public SimpleSource destinationToSource(SimpleDestination destination){
if ( destination == null ) {
return null;
}
SimpleSource simpleSource = new SimpleSource();
simpleSource.setName( destination.getName() );
simpleSource.setDescription( destination.getDescription() );
return simpleSource;
}
}
当我运行命令mvn clean install
/ mvn clean test
时一切正常。
但是当我运行mvn test
/ mvn install
它失败并出现以下错误。(注意:如果我们第一次运行mvn install/mvn test
,它可以工作,因为目标文件夹在构建之前第一次不存在)。
因此,如果我在目标文件夹存在时再次运行mvn test
/ mvn install
,则会收到以下错误。
mapstructapt\src\main\java\SimpleSourceDestinationMapper.java:9:错误:映射处理器中的内部错误:java.lang.RuntimeException:javax.annotation.processing.FilerException:尝试为 SimpleMapDestination 重新创建一个简单映射结构的文件ap.internal.processor.MapperRenderingProcessor.createSourceFile(MapperRenderingProcessor.java:67) at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.writeToSourceFile(MapperRenderingProcessor.java:52) at org.mapstruct.ap.internal.processor.MapperRenderingProcessor. process(MapperRenderingProcessor.java:42) at org.mapstruct.ap.internal.processor.MapperRenderingProcessor.process(MapperRenderingProcessor.java:37) at org.mapstruct.ap.MappingProcessor.process(MappingProcessor.java:223) at org.mapstruct .ap。 MappingProcessor.processMapperTypeElement(MappingProcessor.java:203)
不确定 mapstruct/maven 发生了什么。 所以需要一些帮助来解决这个问题。
编辑:
我的 pom.xml 配置类似于下面帖子中建议的公认答案。 MapStruct 和 Lombok 不能一起工作
我对 lombok 和 mapstruct 集成没有任何问题,我唯一的问题是运行 maven 命令时,例如mvn test
或mvn install
不会清理目标文件夹,然后 mapstruct 尝试重新创建实现文件。
我对 lombok 和 mapstruct 集成没有任何问题,我唯一的问题是运行 maven 命令时,例如 mvn test 或 mvn install 不会清理目标文件夹,然后 mapstruct 尝试重新创建实现文件。
所以,使用 Maven 的选项clean
。 它将清除您的目标文件夹。
-> mvn clean install
例如。
看来你终于没有问题了...
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