Java. awt processing in Linux

In Linux, java. awt processing-general Linux technology-Linux programming and kernel information. The following is a detailed description. Environment: Linux + Websphere5.1 + db2

The image watermark function runs normally on the Windows platform. On the Linux platform, the program reports an error and the awt class cannot be found.
I added the./bin/startServer. sh file to the websphere Startup File.

-Djava. awt. headless = true (Note: jdk1.4 or a later version can be added)

"$ 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" "$ @"


After the above Code is added, the java. awt class can run, but a new error is reported. The error log is as follows:

SRVE0026E: [Servlet Error]-[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 ': 100'
As the value of the DISPLAY variable.
At sun. awt. X11GraphicsEnvironment. initDisplay (Native Method)
At sun. awt. X11GraphicsEnvironment. (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 sun. awt. motif. MToolkit. (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. getdefatooltoolkit (Toolkit. java: 745)

The main cause of the above problems is the DISPLAY settings. Also Add the following code to the webspere/bin/startServer. sh file:

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


Then restart the websphere service, and then the image watermark can run normally.