pom.xml

<project>
   <build>
        <plugins>

            <!--打包jar-->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <!--不打包資源文件-->
                    <excludes>
                        <exclude>*.**</exclude>
                        <exclude>*/*.xml</exclude>
                    </excludes>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <!--MANIFEST.MF 中 Class-Path 加入前綴-->
                            <classpathPrefix>lib/</classpathPrefix>
                            <!--jar包不包含唯一版本標識-->
                            <useUniqueVersions>false</useUniqueVersions>
                            <!--指定入口類-->
                            <mainClass>site.yuyanjia.template.Application</mainClass>
                        </manifest>
                        <manifestEntries>
                            <!--MANIFEST.MF 中 Class-Path 加入資源文件目錄-->
                            <Class-Path>./resources/</Class-Path>
                        </manifestEntries>
                    </archive>
                    <outputDirectory>${project.build.directory}</outputDirectory>
                </configuration>
            </plugin>

            <!--拷貝依賴 copy-dependencies-->
            <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>
                            <outputDirectory>
                                ${project.build.directory}/lib/
                            </outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!--拷貝資源文件 copy-resources-->
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <resources>
                                <resource>
                                    <directory>src/main/resources</directory>
                                </resource>
                            </resources>
                            <outputDirectory>${project.build.directory}/resources</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

            <!--spring boot repackage，依賴 maven-jar-plugin 打包的jar包 重新打包成 spring boot 的jar包-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <!--重寫包含依賴，包含不存在的依賴，jar里沒有pom里的依賴-->
                    <includes>
                        <include>
                            <groupId>null</groupId>
                            <artifactId>null</artifactId>
                        </include>
                    </includes>
                    <layout>ZIP</layout>
                    <!--使用外部配置文件，jar包里沒有資源文件-->
                    <addResources>true</addResources>
                    <outputDirectory>${project.build.directory}</outputDirectory>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                        <configuration>
                            <!--配置jar包特殊標識 配置后，保留原文件，生成新文件 *-run.jar -->
                            <!--配置jar包特殊標識 不配置，原文件命名為 *.jar.original，生成新文件 *.jar -->
                            <!--<classifier>run</classifier>-->
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

運行打包命令 mvn package

執(zhí)行jar包 java -jar spring-boot-template-0.0.1.jar

打包之后的目錄結(jié)構(gòu)

image.png

lib 依賴jar包目錄
resources 配置文件目錄
spring-boot-template-0.0.1.jar 最終執(zhí)行的jar包
spring-boot-template-0.0.1.jar.original springboot repackage 依賴的原jar包

resources目錄

image.png

spring-boot-template-0.0.1.jar中的MANIFEST.MF

Manifest-Version: 1.0
Implementation-Title: spring-boot-template
Implementation-Version: 0.0.1
Built-By: seer
Implementation-Vendor-Id: site.yuyanjia
Class-Path: lib/mysql-connector-java-6.0.6.jar lib/shiro-spring-1.4.0.jar 
中間省略若干配置  
lib/spring-boot-2.0.2.RELEASE.jar ./resources/
Spring-Boot-Version: 2.0.2.RELEASE
Main-Class: org.springframework.boot.loader.PropertiesLauncher
Start-Class: site.yuyanjia.template.Application
Spring-Boot-Classes: BOOT-INF/classes/
Spring-Boot-Lib: BOOT-INF/lib/
Created-By: Apache Maven 3.5.0
Build-Jdk: 1.8.0_40
Implementation-URL: https://projects.spring.io/spring-boot/#/spring-boot-starter-parent/spring-boot-template

Class-Path最后的 ./resources/ 指示資源文件目錄

有興趣的可以看下 spring-boot-template-0.0.1.jar.original 中的MANIFEST.MF

spring-boot-template-0.0.1.jar目錄結(jié)構(gòu)

image.png

spring-boot-template-0.0.1.jar.original目錄結(jié)構(gòu)

image.png

參考文章

Spring cloud的Maven插件（一）：repackage目標
Springboot打jar包分離lib配置文件正確方式
Spring Boot Maven Plugin