*. No main manifest attribute in jar

1. Configuration plug-ins

<plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>2.2.2.RELEASE</version>
        <!-- There is no such configuration , Hot deployment won't work -->
        <executions>
          <execution>
            <goals>
              <goal>repackage</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

Be sure to have repackage The goal is
Otherwise, you can't print this format jar

So , repackage Is to reorganize a spring-boot Package structure of

2. Packing results

netflix-eureka-server-1.0-SNAPSHOT.jar.original It's original jar Package structure