Scala和Java與Maven在默認Eclipse中

Question

是否可以使用默認的eclipse（Java EE開發人員的Eclipse IDE或Java開發人員的Eclipse IDE）訪問Java類中的scala源？

使用Scala-IDE可以在Scala中訪問Java代碼，反之亦然，但是在默認的eclipse中沒有問題。 我可以使用以下pom.xml編譯源代碼並執行它。 我的源文件夾結構是src / main / java，src / main / scala，src / test / scala和src / test / java。 這有可能還是我需要ScalaIDE？ 當我下載用於月食的ScalaIDE-Plugin並將scala性質添加到正在運行的項目中時。

<dependencies>
    <dependency>
        <groupId>org.scala-lang</groupId>
        <artifactId>scala-library</artifactId>
        <version>2.11.7</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.8.1</version>
    </dependency>
</dependencies>

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>net.alchim31.maven</groupId>
                <artifactId>scala-maven-plugin</artifactId>
                <version>3.2.1</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
            </plugin>
            <!--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>
                                        [3.2.1,)
                                    </versionRange>
                                    <goals>
                                        <goal>compile</goal>
                                        <goal>add-source</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore></ignore>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
    <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>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <compilerArgument>-proc:none</compilerArgument>
            </configuration>
            <executions>
                <execution>
                    <phase>compile</phase>
                    <goals>
                        <goal>compile</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <!-- Build an executable JAR -->
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <classpathPrefix>lib/</classpathPrefix>
                        <mainClass>test.JavaMain</mainClass>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 1

是的，您是對的，我們不需要SCALA IDE，我們可以單獨使用ECLIPSE IDE來做到這一點。

http://davidb.github.io/scala-maven-plugin/example_java.html

Answer 2

這個問題在這里之前被問過

使用Maven多模塊/簡單項目，請確保您在pom（=> classpath）中使用相同的scala庫.jar版本，這兩個ur eclipse / plugins /目錄

希望對您有所幫助。