在项目pom文件中加上如下代码，进行文件路径扫描。

<build>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.yml</include> <!--springboot中-->
                <include>**/*.yaml</include>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.yml</include>
                <include>**/*.yaml</include>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>false</filtering>
        </resource>
    </resources>
</build>

详细补充：

<resources>
    <resource>
        <directory>src/main/resources</directory>
        <includes>
            <include>**/*.properties</include>
            <include>**/*.xml</include>
            <include>**/*.yml</include>
            <include>**/*.yaml</include>
            <include>**/*.properties</include>
            <include>**/*.ico</include>
            <include>**/*.sql</include>
            <include>**/*.css</include>
            <include>**/*.jpg</include>
            <include>**/*.png</include>
            <include>**/*.js</include>
            <include>**/*.html</include>
        </includes>
        <filtering>true</filtering>
    </resource>
</resources>