The executable jar that starts SpringBoot reports an error: target\spring-boot-hello-1.0-SNAPSHOT.jar does not have a main manifest attribute

　　The packaging is successful, but an error is reported during execution, there is no main manifest attribute

　　

solve:

　　Add dependencies in the red box:

　　

　　   

<build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>repackage</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
</build>