springboot (2) - solve Maven packaging failure: package XXX does not exist

Option One:

In the pom of the referenced module, add under the build-plugins-plugin tag<configuration><classifier>exec</classifier></configuration>

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <classifier>exec</classifier>
                </configuration>
            </plugin>
        </plugins>
</build>

Solution 2:
Enter the following command in the console to try to clear the Maven local repository and rebuild the project. Execute the following command in terminal to clear Maven's local repository

mvn dependency:purge-local-repository

third solution:

File————> Setting————> Runner————> 勾选delegate xxxxxxxxxxxxxxxx

Option 2 is strongly recommended