File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent

IDEA编译报以下错误

File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!

解决方法：在pom中增加以下配置

<properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>