jar中没有主清单属性

<plugin>
    <groupId>org.apache.maven.pluginsgroupId>
    <artifactId>maven-compiler-pluginartifactId>
    <configuration>
        <source>1.8source>
        <target>1.8target>
    configuration>
plugin>
<plugin>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-maven-pluginartifactId>
    <executions>
        <execution>
            <goals>
                <goal>repackagegoal>
            goals>
        execution>
    executions>
plugin>