如果您明确地将它们用于 jasper-reports,那么您可以这样做。
grails-app/conf/jasperreports_extension.properties
net.sf.jasperreports.extension.registry.factory.simple.font.families=net.sf.jasperreports.engine.fonts.SimpleFontExtensionsRegistryFactory
net.sf.jasperreports.extension.simple.font.families.liberationsans=jasper_fonts.xml
grails-app/conf/jasper_fonts.xml
<?xml version="1.0" encoding="UTF-8"?>
<fontFamilies>
<fontFamily name="Liberation Sans">
<normal>lib/fonts/liberation-fonts-ttf-1.07.0/LiberationSans-Regular.ttf</normal>
<bold>lib/fonts/liberation-fonts-ttf-1.07.0/LiberationSans-Bold.ttf</bold>
<italic>lib/fonts/liberation-fonts-ttf-1.07.0/LiberationSans-Italic.ttf</italic>
<boldItalic>lib/fonts/liberation-fonts-ttf-1.07.0/LiberationSans-BoldItalic.ttf</boldItalic>
<pdfEncoding>Identity-H</pdfEncoding>
<pdfEmbedded>true</pdfEmbedded>
<exportFonts>
<export key="net.sf.jasperreports.html">'Liberation Sans', Arial, Helvetica, sans-serif</export>
<export key="net.sf.jasperreports.xhtml">'Liberation Sans', Arial, Helvetica, sans-serif</export>
</exportFonts>
</fontFamily>
</fontFamilies>
根据您的 TTF 字体进行适当修改。请务必记下 <exportFonts> 元素,这样您的 HTML 报告就不会中断。