Fontconfig问题引发的程序异常

本文介绍了一个Java NullPointerException异常的详细原因及解决方案。该异常出现在Font Configuration初始化过程中,涉及sun.awt.FontConfiguration类。解决方法为通过安装fontconfig并使用fc-cache命令来更新字体缓存。

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异常信息

Caused by: java.lang.NullPointerException: null
	at java.desktop/sun.awt.FontConfiguration.getVersion(Unknown Source)
	at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(Unknown Source)
	at java.desktop/sun.awt.FontConfiguration.init(Unknown Source)
	at java.desktop/sun.awt.X11FontManager.createFontConfiguration(Unknown Source)
	at java.desktop/sun.font.SunFontManager$2.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.desktop/sun.font.SunFontManager.<init>(Unknown Source)
	at java.desktop/sun.awt.FcFontManager.<init>(Unknown Source)
	at java.desktop/sun.awt.X11FontManager.<init>(Unknown Source)
	... 174 common frames omitted

解决办法:

yum install fontconfig
fc-cache --force
025-03-29 12:57:07.783 [TID: null] [http-nio-0.0.0.0-8080-exec-1] ERROR com.authine.cloudpivot.web.api.handler.GlobalExceptionHandler Line:271 - 【未知的运行时异常】RuntimeException: null java.lang.NullPointerException: null at sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1264) at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219) at sun.awt.FontConfiguration.init(FontConfiguration.java:107) at sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:774) at sun.font.SunFontManager$2.run(SunFontManager.java:441) at java.security.AccessController.doPrivileged(Native Method) at sun.font.SunFontManager.<init>(SunFontManager.java:386) at sun.awt.FcFontManager.<init>(FcFontManager.java:35) at sun.awt.X11FontManager.<init>(X11FontManager.java:57) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83) at java.security.AccessController.doPrivileged(Native Method) at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) at java.awt.Font.getFont2D(Font.java:491) at java.awt.Font.access$000(Font.java:224) at java.awt.Font$FontAccessImpl.getFont2D(Font.java:228) at sun.font.FontUtilities.getFont2D(FontUtilities.java:200) at sun.java2d.SunGraphics2D.checkFontInfo(SunGraphics2D.java:669) at sun.java2d.SunGraphics2D.getFontInfo(SunGraphics2D.java:835) at sun.java2d.pipe.GlyphListPipe.drawString(GlyphListPipe.java:50) at sun.java2d.pipe.ValidateP
03-30
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