在pom.xml中添加以下代码:
<build> <plugins> <!-- 设置jdk的编译版本 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.7</source> <target>1.7</target> <encoding>utf-8</encoding> </configuration> </plugin> </plugins> </build>