轉自:https://blog.csdn.net/qq_31614947/article/details/70231289
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source> //如果是1.8,修改爲1.8
<target>1.7</target> //如果是1.8,修改爲1.8
</configuration>
</plugin>
</plugins>
</build>