spring boot 多模块 找不到jar & Unable to find main class

1. Unable to find main class

实践方法：添加main方法

public class TestApp {
    public static void main(String[] args) {

    }
}

2.找不到dependency的module

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