maven-assembly-plugin dependencySet 打包多出额外的依赖包

客官°小女子只卖身不卖艺 2022-09-08 05:57 247阅读 0赞

### 文章目录 ###

*  pom和插件配置
 *  问题
 *  解决

# pom和插件配置 #

pom.xml

<build>
    	<plugins>
    		<plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <includes>
                        <include>
                            <groupId>not.exists.groupId</groupId>
                            <artifactId>not.exists.artifactId</artifactId>
                        </include>
                    </includes>
                </configuration>
                <executions>
                    <execution>
                        <id>default</id>
                        <phase>package</phase>
                        <configuration>
                            <classifier>bootapp</classifier>
                        </configuration>
                        <goals>
                            <goal>build-info</goal>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                    <dependencies>
                       <dependency>
                           <groupId>github.clyoudu.com</groupId>
                           <artifactId>spring-boot-thin-layout</artifactId>
                           <version>1.0.0</version>
                       </dependency>
                   </dependencies>
                </executions>
            </plugin>
    		<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <descriptors>
                        <descriptor>src/assembly/assembly.xml</descriptor>
                    </descriptors>
                    <outputDirectory>target</outputDirectory>
                </configuration>
            </plugin>
        </plugins>
    </build>

assembly.xml

<?xml version='1.0' encoding='UTF-8'?>
    <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>bin</id>
        <formats>
            <format>tar.gz</format>
        </formats>
        <includeBaseDirectory>true</includeBaseDirectory>
        <fileSets>
            <fileSet>
                <directory>${project.basedir}/src/bin</directory>
                <outputDirectory>bin</outputDirectory>
                <includes>
                    <include>*.sh</include>
                </includes>
                <lineEnding>unix</lineEnding>
                <fileMode>0755</fileMode>
            </fileSet>
            <fileSet>
                <directory>${project.build.directory}</directory>
                <outputDirectory>main</outputDirectory>
                <includes>
                    <include>*-bootapp.jar</include>
                </includes>
            </fileSet>
        </fileSets>
    	<dependencySets>
            <dependencySet>
                <useProjectArtifact>false</useProjectArtifact>
                <outputDirectory>lib</outputDirectory>
    			<outputFileNameMapping>${artifact.artifactId}-${artifact.baseVersion}.${artifact.extension}</outputFileNameMapping>
            </dependencySet>
    </assembly>

打包逻辑：

1.  使用`spring-boot-maven-plugin`打出可执行jar，但排除了所有依赖（`not.exists.groupId`不会将任何依赖包打入`fatjar`），通过自定义的`spring-boot-thin-layout`扩展`spring-boot-maven-plugin`，使其生成的可执行jar能够按照maven依赖顺序加载jar包外部的依赖;
2.  使用`assembly-maven-plugin`将启动脚本、启动jar、依赖包分别放入不同的目录，最后打包成`tar.gz`。

# 问题 #

打包完成后，发现lib目录多出了几个依赖，这些依赖没有主动引入的痕迹，并且使用`maven helper`、`maven-dependency-plugin`等工具都找不到引入的路径

# 解决 #

最后找到这篇文章：[maven-assembly-plugin 打包包含多余依赖问题一则][maven-assembly-plugin]

> 你在pom对某个坐标使用exclusion \*，排除全部传递依赖的时候，老版本的maven-assembly-plugin插件依然会包含 大专栏 maven-assembly-plugin 打包包含多余依赖问题一则你已经排除的依赖。

果然，在没有指定`maven-assembly-plugin`版本时，默认版本为`3.1.0`，指定版本为`3.1.1`后该问题解决。

[maven-assembly-plugin]: https://www.icode9.com/content-4-642188.html