The packaging for this project did not assign a file to the build artifact||repackage failed: Unable to find main class

一、command

(1)The command install:install is actually a goal on the maven-install-plugin. This is different than the install maven lifecycle phase.

(2)command:

(2.1)mvn clean install--lifecycle(√)

(2.2)mvn clean install:install--maven plugin(×)

二、parent--pom.xml

1、delete:

<build>
      <finalName>${project.artifactId}</finalName>
      <plugins>
           <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
           </plugin>
      </plugins>
 </build>

2、add according to needing