Question

我们使用注释处理框架（Immutables）从接口生成Java类。

现在我必须从kotlin类访问这些生成的类。虽然在Java中这很好用，但Kotlin编译器却找不到它们。

这是maven配置：

        <plugin>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-maven-plugin</artifactId>
            <version>${kotlin.version}</version>
            <executions>
                <execution>
                    <id>compile</id>
                    <phase>compile</phase>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                    <configuration>
                        <sourceDirs>
                            <sourceDir>${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/java</sourceDir>
                        </sourceDirs>
                    </configuration>
                </execution>
            </executions>
        </plugin>

        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <executions>
                <!-- Replacing default-compile as it is treated specially by maven -->
                <execution>
                    <id>default-compile</id>
                    <phase>none</phase>
                </execution>
                <!-- Replacing default-testCompile as it is treated specially by maven -->
                <execution>
                    <id>default-testCompile</id>
                    <phase>none</phase>
                </execution>
                <execution>
                    <id>java-compile</id>
                    <phase>compile</phase>
                    <goals> <goal>compile</goal> </goals>
                </execution>
                <execution>
                    <id>java-test-compile</id>
                    <phase>test-compile</phase>
                    <goals> <goal>testCompile</goal> </goals>
                </execution>
            </executions>
        </plugin>

Kotlin版本是1.2.10（但与1.2.20相同）。交换插件声明没有帮助。我该如何配置？

Answer 1

Kotlin 编译器在 Java 编译器之前运行。要使用 Kotlin 创建已创建的类，必须使用kapt并在那里定义每个注释处理器。

<execution>
    <id>kapt</id>
    <goals>
        <goal>kapt</goal>
    </goals>
    <configuration>
        <sourceDirs>
            <sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
            <sourceDir>${project.basedir}/src/main/java</sourceDir>
        </sourceDirs>
        <annotationProcessorPaths>
            <annotationProcessorPath>
                <groupId>org.immutables</groupId>
                <artifactId>value</artifactId>
                <version>2.5.5</version>
            </annotationProcessorPath>
        </annotationProcessorPaths>
    </configuration>
</execution>

将Kotlin与生成的Java类集成

1 个答案: