Question

我有一个具有多模块结构的spring boot应用程序。

first-module:
 - services:
     - interfaces.kt


second-module:
...

第二个模块具有Spring Boot应用程序

@SpringBootApplication
class Application {
    companion object {
        @JvmStatic
        fun main(args: Array<String>) {
            SpringApplicationBuilder(Application::class.java)
                    .initializers(ConfigServerInitializer.create())
                    .run(*args)
        }
    }
}

还有second-module具有接口实现。但是当我使用Maven编译它时，我遇到了下一个错误：

[WARNING] Using experimental Kotlin incremental compilation
[INFO] Non-incremental compilation will be performed: No information on previous build
[INFO] Kotlin compile iteration: /Users/slandshow/Project/Test/test-project/src/main/kotlin/org/test/Application.kt, /Users/slandshow/Project/Test/test-project/src/main/kotlin/org/test/template/TemplateService.kt
[INFO] Exit code: COMPILATION_ERROR
.../template/TemplateService.kt: (4, 32) Unresolved reference: models
...

我真的不明白为什么会有这样的编译问题。

另外，我还有下一个pom插件。

第一个模块

<build>
        <plugins>
            <plugin>
                <artifactId>kotlin-maven-plugin</artifactId>
                <groupId>org.jetbrains.kotlin</groupId>
                <version>${kotlin.version}</version>

                <configuration>
                    <compilerPlugins>
                        <plugin>no-arg</plugin>
                    </compilerPlugins>
                </configuration>

                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-noarg</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

第二个模块

<build>
        <plugins>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <version>${kotlin.version}</version>

                <configuration>
                    <compilerPlugins>
                        <plugin>spring</plugin>
                    </compilerPlugins>
                </configuration>

                <executions>
                    <execution>
                        <id>compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>

                        <configuration>
                            <sourceDirs>
                                <sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
                                <sourceDir>${project.basedir}/src/main/java</sourceDir>
                            </sourceDirs>
                        </configuration>
                    </execution>

                    <execution>
                        <id>test-compile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>test-compile</goal>
                        </goals>

                        <configuration>
                            <sourceDirs>
                                <sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
                                <sourceDir>${project.basedir}/src/test/java</sourceDir>
                            </sourceDirs>
                        </configuration>
                    </execution>
                </executions>

                <dependencies>
                    <dependency>
                        <groupId>org.jetbrains.kotlin</groupId>
                        <artifactId>kotlin-maven-allopen</artifactId>
                        <version>${kotlin.version}</version>
                    </dependency>
                </dependencies>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>

                <executions>
                    <execution>
                        <id>default-compile</id>
                        <phase>none</phase>
                    </execution>

                    <execution>
                        <id>default-testCompile</id>
                        <phase>none</phase>
                    </execution>

                    <execution>
                        <id>java-compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>${maven-surefire-plugin.version}</version>

                <configuration>
                    <includes>
                        <include>**/*IT.*</include>
                        <include>**/*Test.*</include>
                    </includes>
                </configuration>
            </plugin>
        </plugins>
    </build>

公用pom

<dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-common</artifactId>
            <version>${kotlin.version}</version>
        </dependency>

        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-reflect</artifactId>
            <version>${kotlin.version}</version>
        </dependency>

        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-maven-allopen</artifactId>
            <version>${kotlin.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.jetbrains.kotlin</groupId>
                    <artifactId>kotlin-stdlib</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-maven-noarg</artifactId>
            <version>${kotlin.version}</version>
            <exclusions>
                <exclusion>
                    <groupId>org.jetbrains.kotlin</groupId>
                    <artifactId>kotlin-stdlib</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>

                <executions>
                    <execution>
                        <id>default-compile</id>
                        <phase>none</phase>
                    </execution>

                    <execution>
                        <id>default-testCompile</id>
                        <phase>none</phase>
                    </execution>

                    <execution>
                        <id>java-compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

这是怎么了？

Answer 1

我创建了多个使用多模块结构的项目，但这一个有点独特；因为其中一个子模块只持有后来被另一个子模块使用的服务。

类似的场景在 Spring docs for multi module java project 中定义。

我花了一些时间创建了这个 github-repo，它创建了您想要的多模块结构。

请看一看，如果您有任何问题，请告诉我。

多模块项目的Kotlin编译错误“未解决的参考”

1 个答案: