Unable to find a single main class from the following candidates 。。。

问题描述：

运行mvn install命令时，报以下错误信息：

[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.1.3.RELEASE:repackage (repackage) on project youyue-business: Execution repackage of goal o
rg.springframework.boot:spring-boot-maven-plugin:2.1.3.RELEASE:repackage failed: Unable to find a single main class from the following candidates [com.taisheng.youyue.busines
s.ApplicationBootstrap, com.taisheng.youyue.business.CodeGenerator, com.taisheng.youyue.business.publicUtil.sms.SMSUtil, com.taisheng.youyue.business.watch.baidu.demo.Main, c
om.taisheng.youyue.business.watch.netty.nio.MultiplexerTimeServer, com.taisheng.youyue.business.watch.netty.nio.TimeServer, com.taisheng.youyue.business.watch.netty.tools.Bas
eStationAPI, com.taisheng.youyue.business.watch.app.common.util.LocationUtils, com.taisheng.youyue.business.watch.app.common.util.UnicodeUtils, com.taisheng.youyue.business.w
atch.app.common.util.VerifyCodeUtil, com.taisheng.youyue.business.watch.basis.common.tools.MapDistanceUtil, com.taisheng.youyue.business.watch.basis.common.utils.GetAmrDurati
on, com.taisheng.youyue.business.watch.basis.common.utils.LonlatConversion, com.taisheng.youyue.business.watch.basis.common.utils.UnicodeUtils, com.taisheng.youyue.business.w
atch.basis.common.utils.WeatherHelper, com.taisheng.youyue.business.watch.basis.common.utils.WeatherUtils, com.taisheng.youyue.business.watch.basis.lovemedical.tools.LinkHold
UpwardAnalyzeTools, com.taisheng.youyue.business.watch.basis.lovemedical.tools.WeatherUpwardAnalyzeTools] -> [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  -rf :youyue-business

解决办法：

在pom.xml文件中添加以下代码，指定主方法所在类：

			
				org.springframework.boot
				spring-boot-maven-plugin
				
					com.taisheng.youyue.YouYueApplication