Maven只选择src/main/java或src/main/scala作为源文件夹,而不是两者

Question

我正在使用Eclipse 3.7 w/m2e(2周前安装),Java 6和Scala 2.10.

当我使用m2e来更新项目配置时,根据我配置的.pom的方式,它总是选择src/main/java&& src/test/java或者它选择src/main/scala&& src/test/scala作为我的源文件夹.我希望它有四个作为源文件夹.

这是我的.pom

<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>me.my.name</groupId>
<artifactId>ai.chess</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>chessAI</name>
<description>Chess AI</description>

<repositories>
    <repository>
        <id>scala-tools.org</id>
        <name>Scala-tools Maven2 Repository</name>
        <url>http://scala-tools.org/repo-releases</url>
    </repository>
</repositories>

<pluginRepositories>
    <pluginRepository>
        <id>scala-tools.org</id>
        <name>Scala-tools Maven2 Repository</name>
        <url>http://scala-tools.org/repo-releases</url>
    </pluginRepository>
</pluginRepositories>

<dependencies>
    <dependency>
        <groupId>org.scala-lang</groupId>
        <artifactId>scala-library</artifactId>
        <version>2.10.0</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.10</version>
        <scope>test</scope>
    </dependency>
</dependencies>


<build>
    <!-- <sourceDirectory>src/main/scala</sourceDirectory> 
    <testSourceDirectory>src/test/scala</testSourceDirectory> -->
    <plugins>
        <plugin>
            <groupId>org.scala-tools</groupId>
            <artifactId>maven-scala-plugin</artifactId>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <jvmArgs>
                    <jvmArg>-Xms64m</jvmArg>
                    <jvmArg>-Xmx1024m</jvmArg>
                </jvmArgs>
                <sources>
                    <source>src/main/scala</source>
                    <source>src/main/java</source>
                    <source>src/test/scala</source>
                    <source>src/test/java</source>
                </sources>
            </configuration>
        </plugin>
    </plugins>
    <pluginManagement>
        <plugins>
            <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>
                                        org.scala-tools
                                    </groupId>
                                    <artifactId>
                                        maven-scala-plugin
                                    </artifactId>
                                    <versionRange>
                                        [2.15.2,)
                                    </versionRange>
                                    <goals>
                                        <goal>compile</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore></ignore>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

最后,我想创建一个具有所有必要依赖关系的UberJar,以便它可以在不支持scala(但是支持Java)的服务器上运行.国际象棋游戏的框架是用Java提供的,所以我想将它与Scala一起使用

如果Maven仍然很痛苦,我可能会切换回使用Ant来构建.

PS使用给定的.pom,它使用java源文件夹

Answer 1

scala-maven-plugin(以前称为maven-scala-plugin)需要一些额外的配置来执行混合的Scala/Java项目,但是如果你按照他们的指示(下面复制),它应该将所有必要的目录添加到你的构建路径.

<plugins>
    <plugin>
        <groupId>net.alchim31.maven</groupId>
        <artifactId>scala-maven-plugin</artifactId>
        <executions>
            <execution>
                <id>scala-compile-first</id>
                <phase>process-resources</phase>
                <goals>
                    <goal>add-source</goal>
                    <goal>compile</goal>
                </goals>
            </execution>
            <execution>
                <id>scala-test-compile</id>
                <phase>process-test-resources</phase>
                <goals>
                    <goal>testCompile</goal>
                </goals>
            </execution>
        </executions>
    </plugin>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <executions>
            <execution>
                <phase>compile</phase>
                <goals>
                    <goal>compile</goal>
                </goals>
            </execution>
        </executions>
    </plugin>
</plugins>