升级到11.4.6导致java.lang.NoClassDefFoundError:无法初始化类org.docx4j.fonts.IdentityPlusMapper
升级到11.4.6导致java.lang.NoClassDefFoundError:无法初始化类org.docx4j.fonts.IdentityPlusMapper
提问于 2022-04-27 18:57:54
案例:使用WordprocessingMLPackage编写docx，并使用来自org.docx4j.fonts的IdentityPlusMapper()设置fontMapper，以映射我们收到的文档中的字体：
java.lang.NoClassDefFoundError: Could not initialize class org.docx4j.fonts.IdentityPlusMapper
这发生在从docx4j 11.2.8升级到11.4.6之后。
使用中的依赖关系是：
org.docx4j:docx4j-core:11.4.6
org.docx4j:docx4j-export-fo:11.4.6
org.docx4j:docx4j-JAXB-ReferenceImpl:11.4.6这是一个已知的问题吗？
期待一个可能的答复！
提前谢谢。
回答 2
Stack Overflow用户
发布于 2022-05-03 13:28:15
这似乎是一个字体加载问题。我在一个Mac (最新的蒙特利)，我得到了同样的例外，在建设电话：
java.lang.AssertionError:
Expecting code not to raise a throwable but caught
java.lang.AssertionError
at org.docx4j.fonts.fop.complexscripts.fonts.GlyphPositioningTable$DeviceTable.<init>(GlyphPositioningTable.java:1778)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readPosDeviceTable(OTFAdvancedTypographicTableReader.java:1729)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readPosAnchor(OTFAdvancedTypographicTableReader.java:2053)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readMarkToLigaturePosTableFormat1(OTFAdvancedTypographicTableReader.java:2347)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readMarkToLigaturePosTable(OTFAdvancedTypographicTableReader.java:2373)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readGPOSSubtable(OTFAdvancedTypographicTableReader.java:3124)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readLookupTable(OTFAdvancedTypographicTableReader.java:3193)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readLookupList(OTFAdvancedTypographicTableReader.java:3220)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readCommonLayoutTables(OTFAdvancedTypographicTableReader.java:3241)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readGPOS(OTFAdvancedTypographicTableReader.java:3501)
at org.docx4j.fonts.fop.complexscripts.fonts.OTFAdvancedTypographicTableReader.readAll(OTFAdvancedTypographicTableReader.java:88)
at org.docx4j.fonts.fop.fonts.truetype.OpenFont.handleCharacterSpacing(OpenFont.java:895)
at org.docx4j.fonts.fop.fonts.truetype.OpenFont.readFont(OpenFont.java:867)
at org.docx4j.fonts.fop.fonts.truetype.OFFontLoader.read(OFFontLoader.java:121)
at org.docx4j.fonts.fop.fonts.truetype.OFFontLoader.read(OFFontLoader.java:105)
at org.docx4j.fonts.fop.fonts.FontLoader.getFont(FontLoader.java:130)
at org.docx4j.fonts.fop.fonts.FontLoader.loadFont(FontLoader.java:114)
at org.docx4j.fonts.fop.fonts.autodetect.FontInfoFinder.find(FontInfoFinder.java:262)
at org.docx4j.fonts.PhysicalFonts.getPhysicalFont(PhysicalFonts.java:307)
at org.docx4j.fonts.PhysicalFonts.addPhysicalFonts(PhysicalFonts.java:246)
at org.docx4j.fonts.PhysicalFonts.addPhysicalFont(PhysicalFonts.java:236)
at org.docx4j.fonts.PhysicalFonts.discoverPhysicalFonts(PhysicalFonts.java:183)
at org.docx4j.fonts.IdentityPlusMapper.<clinit>(IdentityPlusMapper.java:74)
at foo(...)
open fun foo(...) {
...
val mlPackage = WordprocessingMLPackage.load(ByteArrayInputStream(input))
mlPackage.fontMapper = IdentityPlusMapper() //<-- boom
}更新(2022年8月29日)：我通过将Docx4j升级到11.4.7解决了这个问题。此外，在调用Docx4J.toFO(...)之前，我还必须添加以下代码
val fopFactoryBuilder: FopFactoryBuilder = FORendererApacheFOP.getFopFactoryBuilder(foSettings)
FORendererApacheFOP.getFOUserAgent(foSettings, fopFactoryBuilder.build())Stack Overflow用户
发布于 2022-10-11 04:21:16
这个断言错误出现在IdentityPlusMapper或BestMatchingMapper的静态块中，不管我们使用什么。确切的线条是：
PhysicalFonts.discoverPhysicalFonts();该问题的解决方法是使用字体选择regex限制在静态块之前加载字体，如javadoc中所述：
PhysicalFonts.setRegex()以下方法快速解决了这个问题，同时减少了内存利用率和静态块的执行时间：
WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage
.load(new ByteArrayInputStream(os.toByteArray()));
String fontRegex = ".*(Courier New|Arial|Times New Roman|Comic Sans|Georgia|Impact|Lucida Console|Lucida Sans Unicode|Palatino Linotype|Tahoma|Trebuchet|Verdana|Symbol|Webdings|Wingdings|MS Sans Serif|MS Serif).*";
if(System.getProperty("os.name").startsWith("Windows")) {
fontRegex = ".*(calibri|cour|arial|times|comic|georgia|impact|LSANS|pala|tahoma|trebuc|verdana|symbol|webdings|wingding).*";
}
PhysicalFonts.setRegex(fontRegex);
wordMLPackage.setFontMapper(new BestMatchingMapper());
Docx4J.toPDF(wordMLPackage, outputStream);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/72033977
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