【Maven】利用Maven插件将依赖包、jar包及配置文件自定义输出目录

说明

maven是一个非常好用的东西，在我们日常开发中依赖jar就不在这里说了，我们主要说的是使用maven打包的问题。我们可能会碰到不一样的打包方式，，这里我们主要使用的三个Maven打包插件maven-dependency-plugin（依赖包打包） maven-jar-plugin（项目打包）maven-resources-plugin（配置文件打包）

maven 的内置变量

1. ${basedir} 项目根目录
2. ${project.build.directory} 构建目录，缺省为target
3. ${project.build.outputDirectory} 构建过程输出目录，缺省为target/classes
4. ${project.build.finalName} 产出物名称，缺省为${project.artifactId}-${project.version}
5. ${project.packaging} 打包类型，缺省为jar
6. ${project.xxx} 当前pom文件的任意节点的内容 

maven-dependency-plugin (依赖包打包)

直接上代码吧

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <executions>
    <!--可以配置多个execution，只要id不重即可-->
        <execution>
            <id>copy-dependencies</id>
            <phase>package</phase>
            <!--goals有多个方式，copy，unpack,copy-dependencies等 具体可以去https://maven.apache.org/plugins/maven-dependency-plugin/usage.html这里看-->
            <goals>
                <goal>copy-dependencies</goal>
            </goals>
            <configuration>
            	<!--指定打的依赖包，只需要ArtifactIds-->
                <includeArtifactIds>junit,slf4j-log4j12</includeArtifactIds>
                <!--指定输出目录，${project.build.directory} 可以在pom.xml中配置自己的默认路径-->
                <outputDirectory>${project.build.directory}/compile/lib</outputDirectory>
                <!-- 如果需要打包所有的依赖包 请使用以下代码 替换<includeArtifactIds>junit,slf4j-log4j12</includeArtifactIds>这一行即可
                <excludeTransitive>false</excludeTransitive>
                <stripVersion>false</stripVersion>
                这里表示只打包scope为runtime 的包
                <includeScope>runtime</includeScope>
                -->
            </configuration>
        </execution>
    </executions>
</plugin>

官网地址：https://maven.apache.org/plugins/maven-dependency-plugin/index.html

maven-jar-plugin（项目打包）

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jar-plugin</artifactId>
    <configuration>
        <!-- 指定打包的jar包输出路径-->
        <outputDirectory>
            ${project.build.directory}/compile/lib
        </outputDirectory>
        <!--不打入jar包的文件类型或者路径-->
        <excludes>
            <exclude>**/*.properties</exclude>
        </excludes>
        <!--表明项目主方法-->
        <archive>
            <manifest>
                <mainClass>com.xing.MapReduce.WordCount.WordCountDriver</mainClass>
            </manifest>
        </archive>
    </configuration>
</plugin>

官网地址：http://maven.apache.org/plugins/maven-jar-plugin/

maven-resources-plugin（配置文件打包）

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <executions>
        <execution>
            <id>copy-resources</id>
            <phase>package</phase>
            <goals>
                <goal>copy-resources</goal>
            </goals>
            <configuration>
                <encoding>UTF-8</encoding>
                <!--复制到的路径-目的路径-->
                <outputDirectory>
                    ${project.build.directory}/compile/conf
                </outputDirectory>
                <resources>
                    <resource>
                        <!--配置文件所在的路径-->
                        <directory>${basedir}/conf</directory>
                    </resource>
                </resources>
            </configuration>
        </execution>
    </executions>
</plugin>

整个pom.xml

<?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>
    <!--${project.build.directory}-->
    <groupId>com.xing</groupId>
    <artifactId>MapReduce</artifactId>
    <version>1.0-SNAPSHOT</version>
	<!--指定编码格式-->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-client</artifactId>
            <version>2.7.1</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
            <scope>test</scope>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <executable>
                        D:\Program Files\Java\jdk1.8.0_162\bin\javac.exe
                    </executable>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <includeArtifactIds>junit,slf4j-log4j12</includeArtifactIds>
                            <!--${project.build.directory} class的输出目录不做设置的话默认代表项目根目录的target目录；也可以使用“自定义文件夹/自定义文件夹 例如：a/b”-->                                    <outputDirectory>${project.build.directory}/lib</outputDirectory>
                            <outputDirectory>${project.build.directory}/compile/lib</outputDirectory>
                            <!--<excludeTransitive>false</excludeTransitive>
                            <stripVersion>false</stripVersion>
                            <includeScope>runtime</includeScope>-->
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <!-- 指定打包的jar包输出路径-->
                    <outputDirectory>
                        ${project.build.directory}/compile/lib
                    </outputDirectory>
                    <!--不打入jar包的文件类型或者路径-->
                    <!--<includes>
                        <include>log4j.properties</include>
                    </includes>-->
                    <excludes>
                        <exclude>**/*.properties</exclude>
                    </excludes>
                    <archive>
                        <manifest>
                            <mainClass>com.xing.MapReduce.WordCount.WordCountDriver</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <encoding>UTF-8</encoding>
                            <!--打成jar包后复制到的路径-->
                            <outputDirectory>
                                ${project.build.directory}/compile/conf
                            </outputDirectory>
                            <resources>
                                <resource>
                                    <!--项目中的路径-->
                                    <directory>${basedir}/conf</directory>
                                </resource>
                            </resources>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

项目截图：