从HeadlessGraphicsEnvironment.getDefaultScreenDevice java.awt.HeadlessException异常抛出 [英] java.awt.HeadlessException thrown from HeadlessGraphicsEnvironment.getDefaultScreenDevice

问题描述

我需要做一个Java服务器上的一些图像处理（Debian中的Java版本1.6.0_12），
而我从我的code接收java.awt.HeadlessException异常：

I need to do some image processing on a java server (Debian with java version "1.6.0_12"), and I am receiving java.awt.HeadlessException from my code:

java.awt.HeadlessException
    at sun.java2d.HeadlessGraphicsEnvironment.getDefaultScreenDevice(HeadlessGraphicsEnvironment.java:64)
    at WaxOn.getDefaultConfiguration(WaxOn.java:341)

当java.awt.headless设置为true

即使（这个code印花那么明显的话）：

Even when java.awt.headless is set to true (as evident by this code printing so):

if (!java.awt.GraphicsEnvironment.isHeadless())
{
    logger.warn("Headless mode is not enabled");
}
else
{
    logger.info("Headless mode");
}

这是code抛出异常：

This is the code that throws the exception:

public static GraphicsConfiguration getDefaultConfiguration()
{
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();
    return gd.getDefaultConfiguration();
}

不知道如何解决这个问题？

Any idea how to solve this?

推荐答案

在无头没有屏幕设备。在<一个href=\"http://download.oracle.com/javase/6/docs/api/java/awt/GraphicsEnvironment.html#getDefaultScreenDevice%28%29\"相对=nofollow>文档清晰：

When headless you don't have a screen device. The documentation is clear:

抛出：
     HeadlessException的 - 如果isHeadless（）返回true

Throws: HeadlessException - if isHeadless() returns true

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