背景

分离lib和config目录, 更新时只需要替换到外面的jar即可, 使用spring-boot-maven-plugin会将所以内容全部打包进去, 如果src/main/resource/下有些文件很大, 打包后的文件会非常大, 而且在jar里更改信息也不方便, 最新的版本信息可以从mvnrepository查看

• 原打包方式

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>2.5.15</version>
        </plugin>
    </plugins>
</build>

分离后的打包方式

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.4.1</version>
                <configuration>
                    <outputDirectory>${project.build.directory}/${project.artifactId}</outputDirectory>

                    <archive>
                        <addMavenDescriptor>true</addMavenDescriptor>
                        <manifest>
                            <mainClass>org.example.App</mainClass>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <useUniqueVersions>false</useUniqueVersions>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                        </manifest>
                        <manifestEntries>
                            <Class-Path>config/ .</Class-Path>
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>3.5.0</version>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/${project.artifactId}/lib</outputDirectory>
                            <excludeTransitive>false</excludeTransitive>
                            <stripVersion>false</stripVersion>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>3.3.0</version>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <resources>
                                <resource>
                                    <directory>src/main/resources/config</directory>
                                    <includes>
                                        <exclude>*</exclude>
                                        <exclude>*/**</exclude>
                                    </includes>
                                </resource>
                                <resource>
                                    <directory>src/main/resources</directory>
                                    <includes>
                                        <exclude>*</exclude>
                                    </includes>
                                </resource>
                            </resources>
                            <outputDirectory>${project.build.directory}/${project.artifactId}/config</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

• 目录结构

  
  
  代码结构
  
  
  打包后结构

参考文章

SpringBoot分离打包：将jar包与lib依赖、配置文件分开