java openJDK 实现图片水印

Question

问题：sunJDK本地开发图片水印 功能OK，测试部署之后发现程序报错

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: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 sun.font.SunFontManager.getInstance(SunFontManager.java:250)
        at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:264)
        at sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:864)

后来发现测试环境使用的是open jdk，根据网上的说法，需要修改jdk或者在docker中增加内容；但这两种方式在我这都行不通；

请问有没有什么好的第三方的包能支持 openJDK实现图片水印。

Answer 1

at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219)
应该是字体配置文件没有找到或者其中没有写对，你检查下配置文件。