xshell 执行项目报错 X11 window server

问题

在xshell中执行java项目报错。java.awt.AWTError: Can't connect to X11 window server using 'localhost:10.0' as the val

Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable.
	at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
	at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:65)
	at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:115)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:74)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:103)
	at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
	at org.icepdf.core.pobjects.fonts.ofont.Font.<clinit>(Font.java:90)
	at org.icepdf.core.pobjects.fonts.FontFactory.getFont(FontFactory.java:126)
	at org.icepdf.core.util.Parser.getObject(Parser.java:435)
	at org.icepdf.core.util.LazyObjectLoader.loadObject(LazyObjectLoader.java:73)
	at org.icepdf.core.util.Library.getObject(Library.java:167)
	at org.icepdf.core.pobjects.Resources.getFont(Resources.java:140)
	at org.icepdf.core.util.content.AbstractContentParser.consume_Tf(AbstractContentParser.java:805)
	at org.icepdf.core.util.content.OContentParser.parseText(OContentParser.java:799)
	at org.icepdf.core.util.content.OContentParser.parse(OContentParser.java:183)
	at org.icepdf.core.pobjects.Page.init(Page.java:403)
	at org.icepdf.core.pobjects.Document.getPageImage(Document.java:1144)
	at org.apache.pdfbox.example.PDFTest.pdf2Pic(PDFTest.java:31)
	at org.apache.pdfbox.example.PDFTest.main(PDFTest.java:54)

原因

因为用到了图形处理，java程序会去寻找linux上的图形界面是否启动

解决

方法1：关闭xshell转发X11连接（设置完以后记得要重新打开一个窗口）

方法2：设置jvm参数，不去检查图形界面

-Djava.awt.headless=true 

 参考：

https://blog.csdn.net/taydy/article/details/54296501

https://blog.csdn.net/yfx000/article/details/86591945