maven打包scala+java工程

在 scala和java混合編程的時候，需要添加一些額外的配置到pom中，才能將scala文件的class加到最終的jar中

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.scala-tools</groupId>
                    <artifactId>maven-scala-plugin</artifactId>
                    <version>2.15.2</version>
                    <executions>
                        <execution>
                            <id>scala-compile</id>
                            <goals>
                                <goal>compile</goal>
                            </goals>
                            <configuration>
                                <!--includes是一個數組，包含要編譯的code-->
                                <includes>
                                    <include>**/*.scala</include>
                                </includes>
                            </configuration>
                        </execution>
                        <execution>
                            <id>scala-test-compile</id>
                            <goals>
                                <goal>testCompile</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <version>3.1.0</version>
                    <configuration>
                        <descriptorRefs>
                            <descriptorRef>jar-with-dependencies</descriptorRef>
                        </descriptorRefs>
                    </configuration>
                    <executions>
                        <execution>
                            <id>make-assembly</id>
                            <phase>package</phase>
                            <goals>
                                <goal>single</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.7.0</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
   </build>

 打包的命令

 mvn clean scala:compile compile package assembly:single -Pproduction -Dmaven.test.skip=true