项目打包公共模块失败【error：repackage failed: Unable to find main class】

1、背景：

今天给项目打jar包时发现了一个打jar包失败的问题。原因是由于项目的公共包没有main方法导致打包失败，但是我们的公共模块确实不需要main方法，所以需要想办法去掉这项校验，经过查阅资料已解决，特此记录一下

2、错误：

错误内容如下：

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.729 s
[INFO] Finished at: 2022-07-09T21:00:11+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.6.4:repackage (repackage) on project yaomall-common:
Execution repackage of goal org.springframework.boot:spring-boot-maven-plugin:2.6.4:repackage failed:
Unable to find main class -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <args> -rf :yaomall-common

3、解决方法在公共模块中的pom文件加入如下配置

方法一：

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

方法二：

<plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><mainClass>none</mainClass>     <!-- 取消查找本项目下的Main方法：为了解决Unable to find main class的问题 --><classifier>execute</classifier>    <!-- 为了解决依赖模块找不到此模块中的类或属性 --></configuration><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins>

4、解决方案借鉴于如下博主(感谢博主)：

https://blog.csdn.net/i402097836/article/details/116232418

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项目打包公共模块失败【error：repackage failed: Unable to find main class】

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