转自：https://www.cnblogs.com/chenlongsheng/p/11121136.html

远程地址引用可以：

https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.css

项目内引用不显示图标

<build>
    <finalName>hello</finalName>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>1.4.2.RELEASE</version>
            <configuration>
                <mainClass>com.chipmunk.hello.Application</mainClass>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <configuration>
                <encoding>UTF-8</encoding>
                <useDefaultDelimiters>true</useDefaultDelimiters>
                <nonFilteredFileExtensions>
                    <nonFilteredFileExtension>woff</nonFilteredFileExtension>
                    <nonFilteredFileExtension>woff2</nonFilteredFileExtension>
                    <nonFilteredFileExtension>eot</nonFilteredFileExtension>
                    <nonFilteredFileExtension>ttf</nonFilteredFileExtension>
                    <nonFilteredFileExtension>svg</nonFilteredFileExtension>
                </nonFilteredFileExtensions>
            </configuration>
        </plugin>
    </plugins>
</build>