<!-- 引用本地jar包 -->
<dependency>
    <groupId>com.gg.app</groupId>
    <artifactId>ZztApp</artifactId>
    <version>2.1</version>
    <scope>system</scope>
    <systemPath>${basedir}/lib/ZztApp2.1.jar</systemPath>
</dependency>

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <includeSystemScope>true</includeSystemScope>
                </configuration>
            </plugin>
</build>

本地jar包放到根目录下lib文件夹

第二种 在jar包目录下运行

mvn install:install-file -DgroupId=oracle -DartifactId=oracle-jdbc -Dversion=12.1.0.2 -Dpackaging=jar -Dfile=oracle-driver-ojdbc6-12.1.0.1.jar