Linux加载Java图形验证码错误
0
错误信息：
Caused by: java.lang.reflect.InvocationTargetException: null
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:85)
... 60 common frames omitted
Caused by: java.lang.NullPointerException: Cannot load from short array because "sun.awt.FontConfiguration.head" is null
at java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262)
at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:224)
at java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:106)
at java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:706)
at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:358)
at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:315)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
at java.desktop/sun.font.SunFontManager.<init>(SunFontManager.java:315)
at java.desktop/sun.awt.FcFontManager.<init>(FcFontManager.java:35)
at java.desktop/sun.awt.X11FontManager.<init>(X11FontManager.java:56)
... 66 common frames omitted
解决方法：
yum install fontconfig
fc-cache --force
重启服务即可