解决springboot maven多模块项目打包的时候某个被依赖的模块报错找不到main class

springboot maven 多模块项目打包的时候某个被依赖的模块报错

[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.1.3.RELEASE:
repackage (repackage) on project **-client: Execution repackage of goal org.springframework.boot:spring-boot-maven-plugin:2.1.3.RELEASE:repackage failed:
Unable to find main class -> [Help 1]

这个被依赖的**-client模块并不需要有main类，解决方法是修改父pom.xml

原来的父pom.xml中的标签内容为

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

将父pom.xml中的标签内容改为

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <fork>true</fork>
                    <verbose>true</verbose>
                    <encoding>UTF-8</encoding>
                    <meminitial>256m</meminitial>
                    <maxmem>1024m</maxmem>
                </configuration>
            </plugin>
        </plugins>
    </build>

原因可以参考springboot官网
https://docs.spring.io/spring-boot/docs/current/reference/html/build-tool-plugins-maven-plugin.html#build-tool-plugins-maven-packaging

Once spring-boot-maven-plugin has been included in your pom.xml,
it automatically tries to rewrite archives to make them executable by using the spring-boot:repackage goal.