Linux上 Can't connect to X11 window server 錯誤解決方案__Linux

Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using 'localhost:11.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:134)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62)
at java.awt.Font.initializeFont(Font.java:308)
at java.awt.Font.<init>(Font.java:344)
at org.jfree.chart.axis.AxisConstants.<clinit>(Unknown Source)
at org.jfree.chart.axis.Axis.<init>(Unknown Source)
at org.jfree.chart.axis.CategoryAxis.<init>(Unknown Source)
at org.jfree.chart.ChartFactory.createLineChart(Unknown Source)

我做了一個驗證碼圖片自動產生器，windows上正常；linux上就報以上錯誤

原因是windows核心整合了gui，而linux上沒有啟動x server

解決辦法：

1。啟動x server

2。在java運行參數上加-Djava.awt.headless=true

問題解決，大家可以看我的驗證圖片：http://www.youkone.com/authImage.ww