此文档主要说明Maven的基础使用方式,以及在使用过程过程中需要遵守哪些默认的准则。我们工作中会经常写maven的配置,但是很多maven使用细节你可能并不知道,但你掌握后使用maven会更加上手。
Apache Maven是一个软件项目管理工具。基于项目对象模型(POM)的概念,Maven可以通过一小段描述信息来管理项目的构建,报告和文档。 Maven的核心是一个插件执行框架, 所有工作都是通过插件完成的。最熟悉的插件如我们比较常用的:
除了这些默认流程的插件,我们针对Maven的工作机制也制作了自己的插件,如 授权系统抽取api.json文件的插件,如通过erm对象描述文件生成Entity实体的插件等(https://gitee.com/kekingcn/kk-erm-maven-plugin)。
使用Maven构建的项目,首先需要在pom.xml文件中写明基本信息,如:
<groupId>com.yudianbank.project</groupId> //组织ID
<artifactId>salesAppParent</artifactId>//工程名称
<packaging>pom</packaging>//打包方式,如:jar、war、pom、rar等
<version>1.0-RELEASES</version> //版本号
由groupId、artifactId、version三个元素定位唯一的jar信息,常说的发个Maven坐标也就是这三个元素
在多模块的项目中使用,用来定义子模块,一般多模块项目中,父模块的packaging都定义为pom
<modules>
<module>api</module>
<module>producer</module>
</modules>
如:在spring boot项目中,会有如下parent节点,用来继承spring boot已经定义好的pom
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
这个节点一般用于定义一些属性,用来作为插件的默认值。在这里定义的属性可以贯穿Maven build的整个生命周期,Maven属性是值占位符,可以在pom中通过${XXX}符号来使用
<properties>
<spring-cloud.version>Dalston.SR3</spring-cloud.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<compiler.version>1.8</compiler.version>
<powermock.version>1.6.4</powermock.version>
<checkstyle.version>6.18</checkstyle.version>
</properties>
除了如上手动定义的一些属性,我们还可以通过如下的方式,访问到其他的一些变量,如:
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
</dependency>
</dependencies>
除了基本的groupId、artifactId、version坐标属性外,dependency节点中还包括如下的常用属性设置
compile : 这是默认范围。所有类路径中都提供了编译依赖项。此外,这些依赖项将传播到依赖项目
runtime : 这很像compile,但表示您希望JDK或容器在运行时提供它。它仅在编译和测试类路径中可用,并且不可传递。
test : 此范围表示正常使用应用程序不需要依赖项,并且仅适用于测试编译和执行阶段。它不是传递性的。
provided :这很像compile,但表示您希望JDK或容器在运行时提供它。它仅在编译和测试类路径中可用,并且不可传递。
system :此范围与provided的类似,只是您必须提供明确包含它的JAR,声明后不会在存储库中查找
dependencies -> exclusions 节点,排除依赖传递
有时候为了解决项目依赖冲突,需要排除依赖的jar包通过Maven依赖传递特性引用的其他jar,如:
<dependency>
<groupId>com.yudianbank.public</groupId>
<artifactId>pdf</artifactId>
<version>1.1-RELEASES</version>
<exclusions>
<exclusion>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
</exclusion>
</exclusions>
</dependency>
关于Maven依赖传递特性,当出现多个jar依赖相同的不同版本jar时,遵循两个原则来引用:
dependencyManagement用来管理声明依赖项,最常见于spring boot项目中,在依赖节点只需要写groupId、artifactId就可以定位一个jar坐标,是因为spring boot的父pom中使用dependencyManagement声明了常用的依赖项,如:
<dependencyManagement>
<dependencies>
<!-- Spring Boot -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot</artifactId>
<version>1.5.7.RELEASE</version>
</dependency>
.......
</dependencies>
</dependencyManagement>
使用dependencyManagement管理的依赖只是声明了,如果没有显示的定义在< dependencies >节点中是不生效的
在软件项目迭代中,通常会有开发、测试、生产等不同的运行环境。很多时候不同的环境需要不同的依赖属性,诸如此场景,都可以使用profiles来定义不同环境下的变量,如:
<profiles>
<profile>
<id>dev</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<!--销售平台 api版本-->
<sales.api.version>1.0-SNAPSHOT</sales.api.version>
<!--本地日志存储地址-->
<logging.path>${basedir}/target/logs</logging.path>
</properties>
</profile>
<profile>
<id>uat</id>
<properties>
<sales.api.version>1.0-SNAPSHOT</sales.api.version>
<logging.path>/data/logs/${appName}</logging.path>
</properties>
</profile>
<profile>
<id>prod</id>
<properties>
<sales.api.version>1.0-RELEASES</sales.api.version>
<logging.path>/data/logs/${appName}</logging.path>
</properties>
</profile>
</profiles>
这里可以定义jar拉取的仓库地址,除了Apache中央仓库外,还有很多其他的开源仓库,如spring的,
<repositories>
<repository>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<name>Central Repository</name>
<url>http://repo.maven.apache.org/maven2</url>
<layout>default</layout>
<snapshots>
<enabled>false</enabled>
</snapshots>
<releases>
<updatePolicy>never</updatePolicy>
</releases>
</pluginRepository>
</pluginRepositories>
为什么在使用Maven构建的项目中,项目编译后会在pom所在目录下生成target目录?是因为在build构建节点中有如下的默认的配置。当然,如果你显示配置了如下的属性,就可以指定编译后文件的输出目录
<build>
<sourceDirectory>${basedir}/src/main/java</sourceDirectory>
<scriptSourceDirectory>${basedir}/src/main/scripts</scriptSourceDirectory>
<testSourceDirectory>${basedir}/src/test/java</testSourceDirectory>
<outputDirectory>${basedir}/target/classes</outputDirectory>
<testOutputDirectory>${basedir}/target/test-classes</testOutputDirectory>
...
</build>
resources用来定义项目的资源路径,默认的路径为${basedir}/src/main/resources,在spring boot环境中,继承了spring boot的父pom属性,它的resources定义如下:
<resources>
<resource>
<directory>${basedir}/src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/application*.yml</include>
<include>**/application*.yaml</include>
<include>**/application*.properties</include>
</includes>
</resource>
<resource>
<directory>${basedir}/src/main/resources</directory>
<excludes>
<exclude>**/application*.yml</exclude>
<exclude>**/application*.yaml</exclude>
<exclude>**/application*.properties</exclude>
</excludes>
</resource>
</resources>
可以看到,spring boot中只定义了三种文件类型的资源,而且通配application开头的文件。当项目中有其他的文件类型或不是application开头时,Maven就会过滤掉。而且在spring boot中定义了属性占位符为@符号,所以在资源文件中使用${}时并不会生效。为了解决这个问题,可以自己在pom中定义resources属性覆盖父pom的行为:如,
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
plugin这个节点主要用来定义构建的插件,包括自定义和已经发布到中央仓库的。如spring boot环境想构建可执行的jar需要添加spring-boot-maven-plugin插件。
<plugins>
<!扫描url-->
<plugin>
<groupId>com.yudianbank.plugin</groupId>
<artifactId>api-abstractor</artifactId>
<version>1.1.1-RELEASE</version>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>createAbstract</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
更多可用的插件:http://maven.apache.org/plugins/index.html
当我们自己搭建了私服,想要将jar包编译后上传到私服时,需要在这个节点配置仓库的地址,如:
<distributionManagement>
<repository>
<id>repo</id>
<name>User Project Releases</name>
<url>http://192.168.1.204:8081/nexus/content/repositories/releases</url>
</repository>
<snapshotRepository>
<id>repo</id>
<name>User Project SNAPSHOTS</name>
<url>http://192.168.1.204:8081/nexus/content/repositories/snapshots</url>
</snapshotRepository>
</distributionManagement>
根节点下的name、description、url等节点用来描述项目的基本信息,如:
<name>sales</name>
<description>这是一个销售系统</description>
<url>http://www.kailing.pub</url>
<licenses>
<license>
<name>Apache License, Version 2.0</name>
<url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
<distribution>repo</distribution>
<comments>A business-friendly OSS license</comments>
</license>
</licenses>
<organization>
<name>keking</name>
<url>http://www.keking.cn</url>
</organization>
一般建议在开发和测试环境中的jar,打成SNAPSHOT的,生产环境的版本打成RELEASES的,这个可以通过上面的profiles节点来控制,他们的区别如下:
应用有些模块需要提供给别人依赖,比如api模块、common模块等。在开发时,每次接口有变动时,记得mvn deploy下,把jar上传到私服。
建议依赖别的jar时,不要写死jar的版本,通过properties节点定义的属性来控制,那么当你pom被别人依赖时,上层pom可以通过定义属性值覆盖父pom中属性来控制依赖的版本
在多模块时,子模块的命名建议使用父模块作为前缀,如sales系统,api模块为sales-api,app模块为sales-app
<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>org.apache.skywalking</groupId>
<artifactId>apm</artifactId>
<version>6.1.0-SNAPSHOT</version>
<parent>
<groupId>org.apache</groupId>
<artifactId>apache</artifactId>
<version>21</version>
</parent>
<modules>
<module>oap-server</module>
<module>apm-commons</module>
<module>apm-sniffer</module>
<module>apm-application-toolkit</module>
<module>apm-protocol</module>
<module>apm-webapp</module>
<module>apm-dist</module>
<module>apm-checkstyle</module>
</modules>
<packaging>pom</packaging>
<name>apm</name>
<url>https://github.com/apache/incubator-skywalking</url>
<scm>
<url>https://github.com/apache/incubator-skywalking</url>
<connection>scm:git:https://github.com/apache/incubator-skywalking.git</connection>
<developerConnection>scm:git:https://github.com/apache/incubator-skywalking.git</developerConnection>
<tag>HEAD</tag>
</scm>
<issueManagement>
<system>GitHub</system>
<url>https://github.com/apache/incubator-skywalking/issues</url>
</issueManagement>
<licenses>
<license>
<name>The Apache Software License, Version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
</license>
</licenses>
<mailingLists>
<mailingList>
<name>SkyWalking Developer List</name>
<post>dev@skywalking.incubator.apache.org</post>
<subscribe>dev-subscribe@skywalking.incubator.apache.org</subscribe>
<unsubscribe>dev-unsubscribe@skywalking.incubator.apache.org</unsubscribe>
</mailingList>
<mailingList>
<name>SkyWalking Commits</name>
<post>commits@skywalking.incubator.apache.org</post>
<subscribe>commits-subscribe@skywalking.incubator.apache.org</subscribe>
<unsubscribe>commits-unsubscribe@skywalking.incubator.apache.org</unsubscribe>
</mailingList>
</mailingLists>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<compiler.version>1.8</compiler.version>
<powermock.version>1.6.4</powermock.version>
<checkstyle.version>6.18</checkstyle.version>
<junit.version>4.12</junit.version>
<mockito-all.version>1.10.19</mockito-all.version>
<!-- Plugin versions -->
<docker.plugin.version>0.4.13</docker.plugin.version>
<takari-maven-plugin.version>0.6.1</takari-maven-plugin.version>
<exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
<maven-antrun-plugin.version>1.8</maven-antrun-plugin.version>
<maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
<maven-assembly-plugin.version>3.1.0</maven-assembly-plugin.version>
<maven-failsafe-plugin.version>2.22.0</maven-failsafe-plugin.version>
<maven-surefire-plugin.version>2.22.0</maven-surefire-plugin.version>
<maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
<maven-shade-plugin.version>3.1.1</maven-shade-plugin.version>
<maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
<apache-rat-plugin.version>0.12</apache-rat-plugin.version>
<maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
<maven-resource-plugin.version>3.1.0</maven-resource-plugin.version>
<maven-source-plugin.version>3.0.1</maven-source-plugin.version>
<versions-maven-plugin.version>2.5</versions-maven-plugin.version>
<coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
<maven-checkstyle-plugin.version>3.0.0</maven-checkstyle-plugin.version>
<jacoco-maven-plugin.version>0.8.3</jacoco-maven-plugin.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>${mockito-all.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>git submodule update</id>
<phase>initialize</phase>
<inherited>false</inherited>
<configuration>
<executable>git</executable>
<arguments>
<argument>submodule</argument>
<argument>update</argument>
<argument>--init</argument>
<argument>--recursive</argument>
</arguments>
</configuration>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- mvn -N io.takari:maven:wrapper -Dmaven=3.5.4 -->
<plugin>
<groupId>io.takari</groupId>
<artifactId>maven</artifactId>
<version>${takari-maven-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>${exec-maven-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<version>${maven-antrun-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>${maven-deploy-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>${maven-assembly-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${maven-failsafe-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>${maven-jar-plugin.version}</version>
</plugin>
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>${maven-shade-plugin.version}</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${maven-enforcer-plugin.version}</version>
<executions>
<execution>
<id>enforce-java</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireJavaVersion>
<!-- Build has not yet been updated for Java 9+ -->
<version>[1.8,9)</version>
</requireJavaVersion>
</rules>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.rat</groupId>
<artifactId>apache-rat-plugin</artifactId>
<version>${apache-rat-plugin.version}</version>
<configuration>
<excludes>
<exclude>**/target/**</exclude>
<exclude>**/DISCLAIMER</exclude>
<exclude>**/licenses/**</exclude>
<exclude>**/ui-licenses/**</exclude>
<exclude>**/codeStyle.xml</exclude>
<!-- IDE files -->
<exclude>**/*.iml</exclude>
<exclude>**/.idea/**</exclude>
<exclude>**/*.classpath</exclude>
<exclude>**/.project</exclude>
<exclude>**/.settings/**</exclude>
<exclude>**/dependency-reduced-pom.xml</exclude>
<!-- UI IDE configs -->
<exclude>**/skywalking-ui/.editorconfig</exclude>
<!-- UI Compiler configs -->
<exclude>**/skywalking-ui/.webpackrc.js</exclude>
<exclude>**/skywalking-ui/.roadhogrc.mock.js</exclude>
<!-- UI Test configs -->
<exclude>**/skywalking-ui/jest.config.js</exclude>
<!-- UI style check files -->
<exclude>**/skywalking-ui/.eslintrc.js</exclude>
<exclude>**/skywalking-ui/.stylelintrc</exclude>
<exclude>**/skywalking-ui/.prettierignore</exclude>
<exclude>**/skywalking-ui/.prettierrc</exclude>
<!-- UI icon files -->
<exclude>**/skywalking-ui/public/font/iconfont/**</exclude>
<!-- git files -->
<exclude>**/.gitignore</exclude>
<exclude>**/.gitmodules</exclude>
<exclude>**/.git/**</exclude>
<!-- CI files -->
<exclude>**/.travis.yml</exclude>
<!-- GitHub files -->
<exclude>**/.github/**</exclude>
<!-- document files -->
<exclude>**/*.md</exclude>
<excldue>**/*.MD</excldue>
<exclude>**/*.txt</exclude>
<exclude>**/docs/**</exclude>
<!-- Test cases data in JSON format -->
<exclude>**/src/test/resources/json/*.json</exclude>
<!-- front end libary and generated files -->
<exclude>**/skywalking-ui/node_modules/**</exclude>
<exclude>**/skywalking-ui/node/**</exclude>
<exclude>**/skywalking-ui/dist/**</exclude>
<!-- web UI dependencies descriptions -->
<exclude>skywalking-ui/package.json</exclude>
<exclude>skywalking-ui/package-lock.json</exclude>
<!-- Proto files of Istio, envoy, prometheus and gogoproto projects -->
<exclude>**/src/main/proto/gogoproto/gogo.proto</exclude>
<exclude>**/src/main/proto/envoy/**</exclude>
<exclude>**/src/main/proto/google/protobuf/*.proto</exclude>
<exclude>**/src/main/proto/prometheus/client_model/metrics.proto</exclude>
<exclude>**/src/main/proto/validate/validate.proto</exclude>
<!-- generated file from antlr -->
<exclude>**/src/main/antlr4/org/apache/skywalking/oal/tool/grammar/OALLexer.tokens</exclude>
<!-- Maven Wrapper generated files -->
<exclude>.mvn/wrapper/maven-wrapper.properties</exclude>
</excludes>
</configuration>
<executions>
<execution>
<phase>verify</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${compiler.version}</source>
<target>${compiler.version}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>${maven-resource-plugin.version}</version>
<configuration>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>${docker.plugin.version}</version>
<configuration>
<skipDocker>true</skipDocker>
</configuration>
</plugin>
<plugin>
<!-- 源码插件 -->
<artifactId>maven-source-plugin</artifactId>
<version>${maven-source-plugin.version}</version>
<!-- 发布时自动将源码同时发布的配置 -->
<executions>
<execution>
<id>attach-sources</id>
<phase>none</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>versions-maven-plugin</artifactId>
<version>${versions-maven-plugin.version}</version>
</plugin>
<plugin>
<groupId>org.eluder.coveralls</groupId>
<artifactId>coveralls-maven-plugin</artifactId>
<version>${coveralls-maven-plugin.version}</version>
<configuration>
<repoToken>xFwR2GqmxcMxV7tGEpW2NfwIrbCD4cQCS</repoToken>
<sourceDirectories>
<sourceDirectory>${project.build.sourceDirectory}</sourceDirectory>
</sourceDirectories>
</configuration>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco-maven-plugin.version}</version>
<executions>
<execution>
<id>prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>${maven-checkstyle-plugin.version}</version>
<dependencies>
<dependency>
<groupId>org.apache.skywalking</groupId>
<artifactId>apm-checkstyle</artifactId>
<version>5.0.0-beta</version>
</dependency>
<dependency>
<groupId>com.puppycrawl.tools</groupId>
<artifactId>checkstyle</artifactId>
<version>8.11</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>validate</id>
<phase>validate</phase>
<configuration>
<configLocation>skywalking/checkStyle.xml</configLocation>
<headerLocation>skywalking/CHECKSTYLE_HEAD</headerLocation>
<encoding>UTF-8</encoding>
<consoleOutput>true</consoleOutput>
<includeTestSourceDirectory>true</includeTestSourceDirectory>
<failsOnError>true</failsOnError>
<excludes>org.apache.skywalking.apm/network/**/*.java,
org.apache.skywalking.apm/collector/remote/grpc/**/*.java,
org.apache.skywalking.apm/agent/core/context/ids/base64/*.java
</excludes>
</configuration>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>