bash 线程“main”中的异常 java.awt.AWTError: 无法使用“:0.0”作为 DISPLAY 变量的值连接到 X11 窗口服务器
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Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable
提问by Hamid Reza
I have trouble running a Java application in my CentOS server. When I fire the command below:
我在 CentOS 服务器上运行 Java 应用程序时遇到问题。当我触发以下命令时：
java -jar the-application.jar
I receive the following error:
我收到以下错误：
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)
at java.awt.Window.<init>(Window.java:535)
at java.awt.Frame.<init>(Frame.java:420)
at java.awt.Frame.<init>(Frame.java:385)
at javax.swing.JFrame.<init>(JFrame.java:174)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745)
at java.awt.EventQueue.access0(EventQueue.java:103)
at java.awt.EventQueue.run(EventQueue.java:706)
at java.awt.EventQueue.run(EventQueue.java:704)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:715)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:218)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:133)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:122)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:118)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:110)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
I tried to define DISPLAY variable using command below, but this time only the error changed and the command failed again:
我尝试使用下面的命令定义 DISPLAY 变量，但这次只更改了错误并且命令再次失败：
Command to set DISPLAY variable:
设置 DISPLAY 变量的命令：
export DISPLAY=:0.0
The error:
错误：
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
Based on the recommendations from different forums, I also tried the followeing varibales separately, but there was no luck:
根据不同论坛的建议，我还分别尝试了以下变量，但没有运气：
export DISPLAY=:0
export DISPLAY=:99
export DISPLAY=:99.0
export DISPLAY=:1
export DISPLAY=:1.0
export DISPLAY=127.0.0.1:0
export DISPLAY=127.0.0.1:0.0
export DISPLAY=127.0.0.1:99
export DISPLAY=127.0.0.1:99.0
export DISPLAY=127.0.0.1:1
export DISPLAY=127.0.0.1:1.0
I tried "xhost + localhost" command, so that maybe it can help, however, I receive the error below:
我尝试了“xhost + localhost”命令，因此它可能会有所帮助，但是，我收到以下错误：
-bash: xhost: command not found
Can anyone help me resolve this issue? Thank you all in advance.
谁能帮我解决这个问题？谢谢大家。
采纳答案by Maryam Saeidi
You should install lightDm on your system as mentioned here:
您应该按照此处所述在您的系统上安装 lightDm：
http://siripong-computer-tips.blogspot.co.uk/2015/02/how-to-add-cinnamon-lightdm-to-centos-7.html
http://siripong-computer-tips.blogspot.co.uk/2015/02/how-to-add-cinnamon-lightdm-to-centos-7.html
If you are running CentOS on VMware you should install related tools on your VMware as well.
如果您在 VMware 上运行 CentOS，您也应该在您的 VMware 上安装相关工具。
