异常:jsp 中的 java.awt.HeadlessException
我基本上是在 swings 中绘制 3d 图表。它作为独立的 java 应用程序运行良好。 我将它与jsp集成,但它抛出无头异常。我正在使用jetty网络服务器。
这是堆栈跟踪:
java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:159)
at java.awt.Window.(Window.java:432)
at java.awt.Frame.(Frame.java:403)
at javax.swing.JFrame.(JFrame.java:202)
at org.jfree.chart.ChartFrame.(ChartFrame.java:76)
at org.jfree.chart.ChartFrame.(ChartFrame.java:64)
at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:86)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
任何人都可以指出实际的错误是什么。
I am basically drawing a 3d chart in swings.Its working fine as standalone java application.
I integrated it with jsp,but it is throwing headless exception.I am using jetty webserver.
here is the stack trace:
java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:159)
at java.awt.Window.(Window.java:432)
at java.awt.Frame.(Frame.java:403)
at javax.swing.JFrame.(JFrame.java:202)
at org.jfree.chart.ChartFrame.(ChartFrame.java:76)
at org.jfree.chart.ChartFrame.(ChartFrame.java:64)
at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:86)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:109)
can anybody point out what is actual error.
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非常感谢,但我通过在jsp中设置以下属性解决了这个问题。
我实际上正在将此 jsp 集成到另一个应用程序中,可能是该应用程序将 headless 属性设置为 true,所以没有获取 3D 图表。
多谢。
Thanks a lot,but i solved the problem by setting the below property in jsp.
I was actually integrating this jsp in another application,may be that application is setting headless property as true,so was not getting the 3D chart.
Thanks a lot.