1.在父工程中pom 添加版本限制:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
<plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins>