Maven Configuration

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Commmand

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mvn '-Dtest=com.anda.engine.disruptor.*Test' test

mvn clean install -DskipTests

mvn compile

Dependencies

Exclude

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<exclusions>
    <exclusion>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </exclusion>
</exclusions>

Scope

  • compile：默认选项，编译测试运行都有效。项目在编译，测试，运行阶段都需要这个artifact对应的Jar。
  • provided：在编译和测试时有效。在编译测试阶段，我们需要这个artifact对应的jar包在classpath中，而在运行阶段，假定已经提供了这个jar包，所以无需这个artifact对应的Jar。
  • runtime：在测试和运行时有效。
  • test：仅在测试时有效。
  • system：在编译和测试时有效，与本机系统关联，可移植性差。

Unit Test

Plugin

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<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>2.22.0</version>
    <configuration>
        <forkCount>1</forkCount>
        <reuseForks>true</reuseForks>
    </configuration>
</plugin>

Build

Package Kotlin Project With Jar File

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 <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-assembly-plugin</artifactId>
    <version>3.1.0</version>
    <executions>
        <execution>
            <id>make-assembly</id>
            <phase>package</phase>
            <goals>
                <goal>single</goal>
            </goals>
            <configuration>
                 <!-- package jar file -->
                <descriptors>
                    <descriptor>assembly.xml</descriptor>
                </descriptors>
                <archive>
                    <manifest>
                        <mainClass>com.anda.engine.ApplicationKt</mainClass>
                    </manifest>
                </archive>
                <!-- <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs> -->
            </configuration>
        </execution>
    </executions>
</plugin>

在pom.xml同级目录下，新建assembly.xml，内容如下：

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<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
    <id>dependencies</id>
    <formats>
        <format>jar</format>
    </formats>
    <includeBaseDirectory>false</includeBaseDirectory>
    <dependencySets>
        <dependencySet>
            <outputDirectory>/</outputDirectory>
            <useProjectArtifact>true</useProjectArtifact>
            <unpack>true</unpack>
            <scope>runtime</scope>
        </dependencySet>
        <dependencySet>
            <outputDirectory>/</outputDirectory>
            <useProjectArtifact>true</useProjectArtifact>
            <unpack>true</unpack>
            <scope>system</scope>
        </dependencySet>
    </dependencySets>
</assembly>

Including Library for Spring Boot

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<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <includeSystemScope>true</includeSystemScope>
    </configuration>
</plugin>

Build Library

  1. 导出的jar没有包含依赖的denpendency，导致其他项目引入的时候报错。

解决方案：添加maven-assembly-plugin插件进行打包。

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<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-assembly-plugin</artifactId>
    <version>3.1.0</version>
    <executions>
        <execution>
            <id>make-assembly</id>
            <phase>package</phase>
            <goals>
                <goal>single</goal>
            </goals>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
        </execution>
    </executions>
</plugin>

此外，需要注意的是，maven-assembly打包出来的是一个可运行的jar，即包含了Kotlin标准库的代码，而实际上需要的仅仅是一个Library。

针对标准库添加provided关键字

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<dependency>
    <groupId>org.jetbrains.kotlin</groupId>
    <artifactId>kotlin-reflect</artifactId>
    <scope>provided</scope>
</dependency>

Repository

MacOS

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# 查看maven安装目录
mvn -v

添加Aliyun Repository，sudo vim /usr/local/Cellar/maven/3.5.4/libexec/conf/settings.xml

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<mirrors>  
    <mirror>  
      <id>alimaven</id>  
      <name>aliyun maven</name>  
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  
      <mirrorOf>central</mirrorOf>          
    </mirror>
</mirrors>