所有子模块都要执行的checkstyle检查

 <!--                所有子模块都要执行的checkstyle检查 -->
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
 <!--            运行checkstyle检查        mvn checkstyle:checkstyle-->
                     <artifactId>maven-checkstyle-plugin</artifactId>
                     <version>2.17</version>
                     <configuration>
                         <configLocation>checkstyle.xml</configLocation>
                         <suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
                         <!--
                            <configLocation>/google_checks.xml</configLocation>
                          -->
                         <failOnViolation>true</failOnViolation>
                         <consoleOutput>true</consoleOutput>
                     </configuration>
                     <executions>
                         <execution>
                             <phase>validate</phase>
                             <goals>
                                 <goal>check</goal>
                             </goals>
                         </execution>
                     </executions>
                 </plugin>