eclipse - 避免 Eclipse 忽略 Scala Maven 项目中的垃圾

Question

我发现maven使用mvn在命令行上编译scala源的唯一方法是在scala-maven-plugin中显式添加执行。

  <plugin>
    <groupId>net.alchim31.maven</groupId>
    <artifactId>scala-maven-plugin</artifactId>
    <version>3.0.1</version>
    <executions>
      <execution>
        <goals>
          <goal>compile</goal>
          <goal>testCompile</goal>
        </goals>
      </execution>
    </executions>
    <configuration>
      <args>
        <arg>-deprecation</arg>
        <arg>-unchecked</arg>
      </args>
      <jvmArgs>
        <jvmArg>-Xms128m</jvmArg>
        <jvmArg>-Xmx1024m</jvmArg>
      </jvmArgs>
    </configuration>
  </plugin>

但是，Eclipse 不喜欢这些执行并给出以下错误。

Plugin execution not covered by lifecycle configuration: net.alchim31.maven:scala-maven-plugin:3.0.1:compile (execution: default, phase: compile)

Plugin execution not covered by lifecycle configuration: net.alchim31.maven:scala-maven-plugin:3.0.1:testCompile (execution: default, phase: test-compile)

Eclipse 建议将目标永久标记为忽略，但这意味着很多难看的垃圾会添加到我的 pom.xml 中。我的意思是，XML 已经很难看了。有没有更好的方法来配置我的项目以使用 mvn 编译源代码？以下是 Eclipse 添加的内容。

<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>
                                        net.alchim31.maven
                                    </groupId>
                                    <artifactId>
                                        scala-maven-plugin
                                    </artifactId>
                                    <versionRange>
                                        [3.0.1,)
                                    </versionRange>
                                    <goals>
                                        <goal>testCompile</goal>
                                        <goal>compile</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore></ignore>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>

Answer 1

m2e 要求您安装特定的 m2e 插件。scala-maven-plugin 的插件是 m2e-scala:https://github.com/sonatype/m2eclipse-scala

删除禁用scala-maven-plugin的pluginManagement，并安装m2e-scala http://alchim31.free.fr/m2e-scala/update-site

顺便说一句，最新的 scala-maven-plugin 是 3.1.0，而不是 3.0.1。

干杯，

斯蒂芬