项目结构:纯Kotlin作为多模块maven应用
kotlinspringboot(root-module)
问题:我跑的时候
$ cd ./kotlingspringboot/integration-tests/
$ mvn test
要么
$ cd ./kotlingspringboot/integration-tests/
$ mvn kotlin:test-compile
我从api模块得到关于类的未解析引用的编译错误:
[ERROR] Failed to execute goal org.jetbrains.kotlin:kotlin-maven-plugin:1.2.21:test-compile (test-compile) on project hello-integration-tests: Compilation failure: Compilation failure:
[ERROR] C:\workspace\kotlinspringboot\integration-tests\src\test\kotlin\org\ildar\hello\integration\HelloEndpointTests.kt:[6,18] Unresolved reference: SpringKotlinHelloWorldApplication
注意:我之前运行过mvn clean install并验证.m2缓存包含有效的api模块jar。
api(子模块)pom.xml
....
<parent>
<artifactId>kotlin-spring-boot</artifactId>
<groupId>org.ildar</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>hello-api</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
....
集成测试(子模块)pom.xml
<parent>
<artifactId>kotlin-spring-boot</artifactId>
<groupId>org.ildar</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>hello-integration-tests</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<testSourceDirectory>${project.basedir}/src/test/kotlin</testSourceDirectory>
<plugins>
<plugin>
<artifactId>kotlin-maven-plugin</artifactId>
<groupId>org.jetbrains.kotlin</groupId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<goals> <goal>compile</goal> </goals>
</execution>
<execution>
<id>test-compile</id>
<goals> <goal>test-compile</goal> </goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
链接到github上的项目:https://github.com/IldarGalikov/kotlinspringboot
问题是由Spring Boot重新打包API jar引起的。它将应用程序的类文件从jar的根目录移动到jar中的BOOT-INF / classes文件夹中。在编译集成测试时,kotlin编译器只搜索jar的根目录中的类文件,而不是查看BOOT-INF文件夹。因此,它无法解析API jar中类的引用。
This answer的Damien描述了如何使Spring Boot将应用程序类保存在jar的根目录中。如果我将那里提到的配置添加到api / pom.xml中,项目中的集成测试将按预期进行编译:
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<layout>MODULE</layout>
</configuration>
</plugin>