默认打包生成的jar是不能直接运行的，因为带有main方法的信息不会添加到mainifest中，需要借助maven-shade-plugin
<project>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.0</version>
<configuration>
<transformers>
<transformer implementation = "org.apache.maven.plugins.shade.resource.MainifestResourceTransformer">
<mainClass>com.xun.pf.sayHello.HelloWorld</mainClass>
</transformer>
</transformers>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
...
</project>
