linux异常系列:Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.

在linux上在画图和chart时好多人会碰到Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.

原因：因为用到了图形处理，java程序会去寻找linux上的图形界面是否启动

解决：不让java寻找linux图形界面即可，在java启动时加选项java -Djava.awt.headless=true

解决：
在.bash_profile 加了个export JAVA_OPTS=-Djava.awt.headless=true

以下为另一种方式，试了没有效果
实现：如果是tomcat，在/usr/local/tomcat/bin/catalina.sh中修改为

JAVA_OPTS=-Djava.awt.headless=true

echo "Using CATALINA_BASE: $CATALINA_BASE"
echo "Using CATALINA_HOME: $CATALINA_HOME"
echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
echo "Using RUNJAVA: $_RUNJAVA"
echo "Using JAVA_OPTS: $JAVA_OPTS"

java将不需检测，问题自然解决。

java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment
只在重启时才会出现，重启一次tomcat，kill
tomcat进程就可以了

源文档 <http://www.linuxdiyf.com/viewarticle.php?id=110580>