准确来讲，应该是maven项目使用Bootstrap时，出现
"Failed to decode downloaded font"和"OTS parsing error: Failed to convert WOFF 2.0 font to SFNT"
导致图标出不来的问题。
解决方案：
设置filter，font文件不需要filter，见下面示例：
1 <build> 2 <finalName>bootstrap in maven</finalName> 3 <resources> 4 <resource> 5 <directory>src/main/resources</directory> 6 <filtering>true</filtering> 7 <excludes> 8 <exclude>static/fonts/**</exclude> 9 </excludes> 10 </resource> 11 <!-- fonts file cannot use filter as the data structure of byte file will be changed via filter --> 12 <resource> 13 <directory>src/main/resources</directory> 14 <filtering>false</filtering> 15 <includes> 16 <include>static/fonts/**</include> 17 </includes> 18 </resource> 19 <resource> 20 <directory>src/main/java</directory> 21 <includes> 22 <include>**/*.xml</include> 23 </includes> 24 </resource> 25 </resources> 26 ... 27 </build>
原因：
上面的xml里也写了，因为经过maven的filter，会破坏font文件的二进制文件格式，到时前台解析出错。