idea打包发出警告Using platform encoding (UTF-8 actually) to copy filtered resources,解决方法

Using platform encoding (UTF-8 actually) to copy filtered resources

今天在idea中用maven打包是发出警告

Using platform encoding (UTF-8 actually) to copy filtered resources

解决方法：

在<project>元素下面添加:

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

   </properties>