8u111-jdk-alpine 字体缺少FontConfiguration的NullPointerException错误解决方案
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1、异常
java.lang.NullPointerException 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:431) at java.security.AccessController.doPrivileged(Native Method) at sun.font.SunFontManager.<init>(SunFontManager.java:376) 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:180) at sun.font.StandardGlyphVector.initFontData(StandardGlyphVector.java:1126) at sun.font.StandardGlyphVector.init(StandardGlyphVector.java:1115) at sun.font.StandardGlyphVector.<init>(StandardGlyphVector.java:167) at java.awt.Font.createGlyphVector(Font.java:2545) at nl.captcha.text.renderer.DefaultWordRenderer.render(Unknown Source) at nl.captcha.Captcha$Builder.addText(Unknown Source) at com.liferay.portal.captcha.simplecaptcha.SimpleCaptchaImpl.getSimpleCaptcha(SimpleCaptchaImpl.java:243) at com.liferay.portal.captcha.simplecaptcha.SimpleCaptchaImpl.serveImage(SimpleCaptchaImpl.java:159) at com.liferay.portal.captcha.CaptchaImpl.serveImage(CaptchaImpl.java:100) at com.liferay.portal.kernel.captcha.CaptchaUtil.serveImage(CaptchaUtil.java:78) at com.liferay.portal.captcha.CaptchaPortletAction.serveResource(CaptchaPortletAction.java:42)
2、解决,在dockerFile中添加
# 缺少的字体 RUN echo -e "https://mirror.tuna.tsinghua.edu.cn/alpine/v3.4/main https://mirror.tuna.tsinghua.edu.cn/alpine/v3.4/community" > /etc/apk/repositories RUN apk --update add curl bash ttf-dejavu && rm -rf /var/cache/apk/*
3、结果
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