Linux下java.awt处理

环境:Linux  + Websphere5.1 + db2

图片水印功能在window平台上运行正常,到Linux平台上,程序报错,找不到awt类.
我在websphere的起动文件中../bin/startServer.sh文件中增加

-Djava.awt.headless=true （注：jdk1.4或更高版本才可以加）

"$JAVA_HOME"/bin/java \
  $DEBUG \
  -Dws.ext.dirs="$WAS_EXT_DIRS" \
  -classpath "$WAS_CLASSPATH" \
  -Dwas.install.root="$WAS_HOME" \
  -Djava.awt.headless=true \
  $USER_INSTALL_PROP \
  com.ibm.ws.bootstrap.WSLauncher \
  $SHELL "$CONFIG_ROOT" "$WAS_CELL" "$WAS_NODE" "$@"


增加如上代码后,java.awt类是可以运行了,但是以报出一个新的错误,错误日志如下:

SRVE0026E: ［Servlet 错误］－［Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.］：java.lang.InternalError: Can't connect to X11 window server using ':0.0'
as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:161).null(Unknown Source)
at java.lang.Class.forName1(Native Method)
at java.lang.Class.forName(Class.java(Compiled Code))
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:90)
at at sun.awt.motif.MToolkit.<clinit>(MToolkit.java:109).null(Unknown Source)
at java.lang.Class.forName1(Native Method)
at java.lang.Class.forName(Class.java(Compiled Code))
at java.awt.Toolkit$2.run(Toolkit.java:754)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:745)

产生以上问题的主要原因是DISPLAY的设置,同样在webspere /bin/startServer.sh文件中加入以下代码

PLATFORM=`/bin/uname`
case $PLATFORM in
  AIX)
    EXTSHM=ON
    LIBPATH="$WAS_LIBPATH":$LIBPATH
    export LIBPATH EXTSHM ;;
  Linux)
    LD_LIBRARY_PATH="$WAS_LIBPATH":$LD_LIBRARY_PATH
    export DISPLAY=127.0.0.1:0
    export LD_LIBRARY_PATH ;;
  SunOS)
    LD_LIBRARY_PATH="$WAS_LIBPATH":$LD_LIBRARY_PATH
    export LD_LIBRARY_PATH ;;
  HP-UX)
    SHLIB_PATH="$WAS_LIBPATH":$SHLIB_PATH
    export SHLIB_PATH ;;
esac


然后重新启动websphere服务，然后图片水印就可以正常运行。