解决方法：在pom.xml文件中设置jdk版本 参考自独行侠_阿涛 的博客
<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.5.1</version> <configuration> <showDeprecation>true</showDeprecation> <showWarnings>true</showWarnings> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build>