原创

用maven编译、打包Java和Scala混合开发的项目

写在前面

摆脱依赖IDEA手动打jar包,实现maven管理spark\scala的不同版本的依赖,排除特定依赖,包含指

定依赖,并最终生成包含Java、Scala代码的混合编译的可执行jar包程序。

使用环境

  • jdk1.8
  • maven3.6.1
  • IDEA2017
  • spark-2.4.3
  • scala2.1.8

我的pom文件


<?xml version="1.0" encoding="UTF-8"?>
<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>com.dr.leo</groupId>
    <artifactId>FastKettle</artifactId>
    <version>2.0.1</version>
    <description>FastKettle2.0,零售商数据清洗系统!</description>
    <url>https://www.jlpyyf.com</url>
    <developers>
        <developer>
            <id>leo</id>
            <name>leo.jie</name>
            <email>leo.jie@datarealglobal.com</email>
            <roles>
                <role>developer</role>
            </roles>
        </developer>
    </developers>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <spark.version>2.4.3</spark.version>
        <scala.version>2.11</scala.version>
        <spark.cope>compile</spark.cope>
    </properties>

    <distributionManagement>
        <!--nexues3私服地址-->
        <snapshotRepository>
            <id>snapshots</id>
            <url>http://192.168.x.xxx:8081/repository/maven-snapshots/</url>
            <!-- nexus的仓储地址 -->
        </snapshotRepository>
        <repository>
            <id>releases</id>
            <url>http://192.168.x.xxx:8081/repository/maven-releases/</url>
        </repository>
    </distributionManagement>

    <dependencies>
        <dependency>
            <!--钉钉消息预警插件(暂无发布到中央仓库)-->
            <groupId>com.dr.leo</groupId>
            <artifactId>dingtalk-smart-alert</artifactId>
            <version>1.0.0-SNAPSHOT</version>
            <classifier>repack</classifier>
        </dependency>
        <dependency>
            <!--spark的相关依赖,直接去中央仓库搜索自己需要的版本,注意Scala和spark的版本对应,provided打包时排斥在外的依赖-->
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_${scala.version}</artifactId>
            <version>${spark.version}</version>
            <scope>provided</scope>
            <!--<scope>${spark.cope}</scope>-->
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-sql -->
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-sql_${scala.version}</artifactId>
            <version>${spark.version}</version>
            <scope>provided</scope>
            <!--<scope>${spark.cope}</scope>-->
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-hive -->
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-hive_${scala.version}</artifactId>
            <version>${spark.version}</version>
            <scope>provided</scope>
            <!--<scope>${spark.cope}</scope>-->
        </dependency>

        <!-- JDBC-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.32</version>
        </dependency>

        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <version>6.1.0.jre8</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.scala-tools</groupId>
                <artifactId>maven-scala-plugin</artifactId>
                <version>2.15.0</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>compile</goal>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <scalaVersion>${scala.version}</scalaVersion>
                    <args>
                        <arg>-target:jvm-1.5</arg>
                    </args>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.10</version>
                <configuration>
                    <downloadSources>true</downloadSources>
                    <buildcommands>
                     <buildcommand>ch.epfl.lamp.sdt.core.scalabuilder</buildcommand>
                    </buildcommands>
                    <additionalProjectnatures>
                        <projectnature>ch.epfl.lamp.sdt.core.scalanature</projectnature>
                    </additionalProjectnatures>
                    <classpathContainers>
                        <classpathContainer>org.eclipse.jdt.launching.JRE_CONTAINER</classpathContainer>
                        <classpathContainer>ch.epfl.lamp.sdt.launching.SCALA_CONTAINER</classpathContainer>
                    </classpathContainers>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.1.1</version>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                    <!-- 下面两个配置,控制jar最终生成的名字 -->
                    <finalName>FastKettle-2.0.1-RELEASE</finalName>
                    <appendAssemblyId>false</appendAssemblyId>
                </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>3.6.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>build-helper-maven-plugin</artifactId>
                <version>1.10</version>
                <executions>
                    <execution>
                        <id>add-source</id>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>add-source</goal>
                        </goals>
                        <configuration>
                            <!-- 我们可以通过在这里添加多个source节点,来添加任意多个源文件夹 -->
                            <sources>
                                <source>src/main/java</source>
                                <source>src/main/scala</source>
                            </sources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <reporting>
        <plugins>
            <plugin>
                <groupId>org.scala-tools</groupId>
                <artifactId>maven-scala-plugin</artifactId>
                <configuration>
                    <scalaVersion>${scala.version}</scalaVersion>
                </configuration>
            </plugin>
        </plugins>
    </reporting>

</project>

总结

以上方式,可能不是最完美的方式,但已经过实践可用,实现scala代码中调Java代码的功能模块,并实现最终的混合打包,执行。

正文到此结束