具体来说：
<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.3</version> <configuration> <source>1.8</source> <target>1.8</target> <compilerArguments> <extdirs>${project.basedir}/src/lib</extdirs> </compilerArguments> </configuration> </plugin>
