通过 Linux 终端运行 Java GUI 应用程序
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Running Java GUI applications through a Linux terminal
提问by Tyler Treat
I'm on Ubuntu trying to run a Java GUI application through the terminal. I'm getting a HeadlessException when I try to run it. Below is the stack trace:
我在 Ubuntu 上尝试通过终端运行 Java GUI 应用程序。当我尝试运行它时，我收到 HeadlessException。下面是堆栈跟踪：
Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:173)
at java.awt.Window.<init>(Window.java:437)
at java.awt.Frame.<init>(Frame.java:419)
at java.awt.Frame.<init>(Frame.java:384)
at javax.swing.JFrame.<init>(JFrame.java:174)
at gui.ImageViewer.<init>(ImageViewer.java:34)
at displayrunner.DisplayRunner.run(DisplayRunner.java:15)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:647)
at java.awt.EventQueue.accessjava -jar MyJar.jar
0(EventQueue.java:96)
at java.awt.EventQueue.run(EventQueue.java:608)
at java.awt.EventQueue.run(EventQueue.java:606)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext.doIntersectionPrivilege(AccessControlContext.java:105)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:617)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)
I tried export DISPLAY=:0.0before running the application, but that had no effect. How do you run a GUI application through Bash?
我export DISPLAY=:0.0在运行应用程序之前尝试过，但没有效果。如何通过 Bash 运行 GUI 应用程序？
采纳答案by Denis Tulskiy
I guess you only have the default-jre-headlesspackage installed. Check that you have default-jre.
我猜你只安装了这个default-jre-headless包。检查您是否拥有default-jre.
回答by Kevin Lacquement
If you don't have a GUI, you can't run it. Are you running remotely (for example, SSH)?
如果您没有 GUI，则无法运行它。您是否在远程运行（例如，SSH）？
If so, look into the system that you're using for remote access. For example, with SSH you want to look at the AllowX11Forwardingsetting (SSH FAQ entry).
如果是这样，请查看您用于远程访问的系统。例如，对于 SSH，您要查看AllowX11Forwarding设置（SSH FAQ 条目）。
回答by ilalex
If you run your application on Ubuntu by the command:
如果您通过以下命令在 Ubuntu 上运行您的应用程序：
/usr/java/jre1.6.0_22/bin/java -jar MyJar.jar
then OpenJDK is used. Try to install the Sun JDK and run your application like:
然后使用 OpenJDK。尝试安装 Sun JDK 并运行您的应用程序，例如：
export JAVA_TOOL_OPTIONS='-Djava.awt.headless=false'
回答by AkD
I had this exception. I tried setting the headless setting to false, and it worked for me:
我有这个例外。我尝试将无头设置设置为 false，它对我有用：
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