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i am trying to run the example 6.1 from the hunter's book (o'reilly)
that generates the image using java.awt and then encodes it into gif
using Acme's GifEncoder.
as hunter mentioned in his book, for unix clients "the frame has to be
created inside of X11 server and the webserver has to be granted access
to X server"
when i run the code from the example, i get the error message about the
servlet engine failing to connect to X server. something along the lines
of "ajp11: Servlet Error: java.lang.InternalError: Can't connect to X11
window server using 'somehost:0' as the value of the DISPLAY variable."
could someone share the steps to set up X and jserv to make the script
work.
i am using apache 1.3.6 w/ jserv linked as dso running on red hat 5.2
with jdk 1.7 and jserv 1.0
i have tried both starting the jserv engine with a script (as someone
mentioned in faq; ApJServManual was set to on):
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#!/bin/sh
# launch jserv in manual mode
jsdk=/usr/local/java/jsdk/lib/jsdk.jar
jserv=/usr/local/java/jserv/lib/ApacheJServ.jar
props=/usr/local/apache/conf/jserv.properties
log=/usr/local/apache/logs/jserv.log
classes=$jsdk:$jserv:/usr/local/java/jdk/lib/classes.zip:/usr/local/java/lib/Acme.jar
DISPLAY=drwho:0
export DISPLAY
#THREADS_FLAG=native
#export THREADS_FLAG
/usr/local/java/jdk/bin/java -classpath $classes org.apache.jserv.JServ
$props &> $log
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[once again - what should the value of display variable be (same as
HOSTNAME?)]
also i have tried to start jserv together with apache (ApJServManual
Off) and i have tried to set
wrapper.env=DISPLAY=drwho:0
to set environmental variables together with
wrapper.env.copyall=true
the results were the same.
thanks
=anton=
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