在pom.xml文件中加上下面的内容，告诉在编译的时候将properties文件也加进去
<build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> </includes> </resource> </resources> </build>
原文：https://www.cnblogs.com/feixiangdecainiao/p/10846371.html