maven编译插件

<build>
   <plugins>
       <!--https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin-->
       <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-compiler-plugin</artifactId>
           <version>3.8.1</version>
           <configuration>
               <source>1.8</source>
               <target>1.8</target>
               <encoding>UTF-8</encoding>
           </configuration>
       </plugin>
   </plugins>
</build>