需要在pom.xml加入以下代码(在父项目添加即可,如果还不行的话,就在子module的pom.xml也添加)
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
原文:https://www.cnblogs.com/10134dz/p/13548226.html