我正在使用AWS Elasti Beanstalk来驱动我的一个应用程序.在此,我需要将svg文档导出为png,jpg,pdf等.为此,我使用Apache Batik库.这样可以在本地开发工作站上提供出色的输出,但是,一旦将其部署到EBS上,我就会开始出现错误,所有错误都与字体有关.

错误堆栈跟踪为-

Caused by: java.lang.Error: Probable fatal error:No fonts found. 
    at sun.font.FontManager.getDefaultPhysicalFont(FontManager.java:1088) 
    at sun.font.FontManager.initialiseDeferredFont(FontManager.java:960) 
    at sun.font.FontManager.findOtherDeferredFont(FontManager.java:899) 
    at sun.font.FontManager.findDeferredFont(FontManager.java:916) 
    ...
    at sun.font.FontManager.findFont2D(FontManager.java:1904) 
    at sun.font.FontManager.initialiseDeferredFonts(FontManager.java:792) 
    at sun.java2d.SunGraphicsEnvironment.loadFonts(SunGraphicsEnvironment.java:468)
    at sun.awt.X11GraphicsEnvironment.loadFonts(X11GraphicsEnvironment.java:925) 
    at sun.java2d.SunGraphicsEnvironment.loadFontFiles(SunGraphicsEnvironment.java:498) 
    at sun.java2d.SunGraphicsEnvironment.getInstalledFontFamilyNames(SunGraphicsEnvironment.java:721) 
    at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:746) 
    at sun.java2d.SunGraphicsEnvironment.getAvailableFontFamilyNames(SunGraphicsEnvironment.java:773) 
    at sun.java2d.HeadlessGraphicsEnvironment.getAvailableFontFamilyNames(HeadlessGraphicsEnvironment.java:99) 
    at org.apache.batik.gvt.font.FontFamilyResolver.(FontFamilyResolver.java:74) 
    at org.apache.batik.bridge.SVGTextElementBridge.getFontList(SVGTextElementBridge.java:1529) 
    at org.apache.batik.bridge.SVGTextElementBridge.getAttributeMap(SVGTextElementBridge.java:1610) 
    at org.apache.batik.bridge.SVGTextElementBridge.fillAttributedStringBuffer(SVGTextElementBridge.java:902) 
    at org.apache.batik.bridge.SVGTextElementBridge.buildAttributedString(SVGTextElementBridge.java:856) 
    at org.apache.batik.bridge.SVGTextElementBridge.computeLaidoutText(SVGTextElementBridge.java:636)
    at org.apache.batik.bridge.SVGTextElementBridge.buildGraphicsNode(SVGTextElementBridge.java:292) 
    at org.apache.batik.bridge.GVTBuilder.buildGraphicsNode(GVTBuilder.java:224) 
    at org.apache.batik.bridge.GVTBuilder.buildComposite(GVTBuilder.java:171) 
    at org.apache.batik.bridge.GVTBuilder.build(GVTBuilder.java:82) 
    at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:208) 
    at org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTranscoder.java:92) 
    at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:142) 
    at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:156)

所以我尝试将字体安装为one other * answer suggests.,但这给了我一个新的错误stacktrace-

Caused by: java.lang.NoClassDefFoundError: 
Could not initialize class org.apache.batik.gvt.font.FontFamilyResolver 
    at org.apache.batik.bridge.SVGTextElementBridge.getFontList(Unknown Source) 
    at org.apache.batik.bridge.SVGTextElementBridge.getAttributeMap(Unknown Source) 
    at org.apache.batik.bridge.SVGTextElementBridge.fillAttributedStringBuffer(Unknown Source) 
    at org.apache.batik.bridge.SVGTextElementBridge.buildAttributedString(Unknown Source) 
    at org.apache.batik.bridge.SVGTextElementBridge.computeLaidoutText(Unknown Source) 
    at org.apache.batik.bridge.SVGTextElementBridge.buildGraphicsNode(Unknown Source) 
    at org.apache.batik.bridge.GVTBuilder.buildGraphicsNode(Unknown Source) 
    at org.apache.batik.bridge.GVTBuilder.buildComposite(Unknown Source) 
    at org.apache.batik.bridge.GVTBuilder.build(Unknown Source) 
    at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(Unknown Source) 
    at org.apache.batik.transcoder.image.ImageTranscoder.transcode(Unknown Source) 
    at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(Unknown Source) 
    at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(Unknown Source) 

我不明白为什么会这样.然后我设置System.setProperty(“ java.awt.headless”,“ true”);在我打电话给蜡染的转码器之前.但这也会生成上述错误消息.我没有其他选择了.

我想念什么吗？我可以做些什么来增加更多背景信息吗？谢谢您的帮助.

解决方法:

我在我的maven pom.xml文件中添加了以下依赖关系,它似乎使该类可供使用：

<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-gvt</artifactId>
    <version>1.7</version>
</dependency>

但是请注意,它映射的字体并不总是与MS核心字体具有相同的尺寸(阿拉伯字体,新罗马字体等),因此看起来可能像是块状字体或不同于它们要替换的字体.