Sorry, a correction to my post. I checked my server and found that Xvfb is
actually running on display 1.0. These are the processes.
Xvfb :1
bash -c export DISPLAY=:1.0; . /opt/xxxx/tomcat.sh xxxx
I'll have to dig up for the details of tweaking, but googling of "tomcat
xvfb" turned up a few like this.
http://www.mail-archive.com/tomcat-user@jakarta.apache.org/msg159956.html
Regards,
Ben Kim
Developer
http://benix.tamu.edu
---------- Forwarded message ----------
Date: Fri, 13 Jan 2006 00:53:34 -0600 (CST)
From: Ben Kim <[EMAIL PROTECTED]>
To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Image Scaling Code
This may or may not be the case with you.
I had a similar error (X11, DISPLAY) with an earlier version of tomcat
included in a 3rd party package, on linux.
After I installed Xvfb (x virtual frame buffer) server rpm, the error went
away. (http://www.xfree86.org/4.0.1/Xvfb.1.html) I think there was a clue
in the error log.
If you're on Fedora, you can just do yum install xorg-x11-Xvfb or do
yum search Xvfb. I don't think I had to "run" it actually.
Don't know if it will help you, but just in case.
Regards,
Ben Kim
Developer
http://benix.tamu.edu
On 1/12/06, Justin Jaynes <[EMAIL PROTECTED]> wrote:
>
> Hello all,
>
> I've written a java class to scale jpeg images. But I can't seem to get
> it to work. Can anyone point me in the right direction?
>
> Here is my code:
>
>
> package com.everybuddystree;
>
> import java.awt.*;
> import java.awt.image.*;
> import java.io.*;
> import javax.imageio.*;
>
> public class ImageScaler {
>
> public ImageScaler() {
> }
>
> public boolean scaleImageByWidth(String fileName, int newWidth) {
>
> File originalImage = new File(fileName);
> try {
> BufferedImage workingBufferedImage = ImageIO.read(originalImage);
> int width = workingBufferedImage.getWidth();
> int height = workingBufferedImage.getHeight();
> Image workingImage = workingBufferedImage;
> workingImage = (Image)workingImage.getScaledInstance(newWidth,-1,1);
> BufferedImage finalImage = (BufferedImage)workingImage;
> ImageIO.write(finalImage, "jpg", originalImage);
>
> return true;
>
> } catch (IOException ex){
>
> return false;
>
> }
>
> }
>
> }
>
> When I run the pass an image to the class using a jsp I get the
> following errors from Tomcat:
>
>
> HTTP Status 500 -
> ---------------------------------
> type Exception report
> message
> description The server encountered an internal error () that prevented it
> from fulfilling this request.
> exception
> javax.servlet.ServletException: Can't connect to X11 window server using
> ':0.0' as the value of the DISPLAY variable.
> org.apache.jasper.runtime.PageContextImpl.doHandlePageException(
> PageContextImpl.java:848)
> org.apache.jasper.runtime.PageContextImpl.handlePageException(
> PageContextImpl.java:781) org.apache.jsp.image_jsp._jspService(
> org.apache.jsp.image_jsp:158)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java
> :322) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
> :314) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root cause
> java.lang.InternalError: Can't connect to X11 window server using ':0.0'
> as the value of the DISPLAY variable.
> sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
> sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java
> :53) sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java
> :142) java.security.AccessController.doPrivileged(Native Method)
> sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
> java.lang.Class.forName0(Native Method) java.lang.Class.forName(
> Class.java:164) java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
> GraphicsEnvironment.java:68) sun.awt.X11.XToolkit.<clinit>(XToolkit.java
> :96) java.lang.Class.forName0(Native Method) java.lang.Class.forName(
> Class.java:164) java.awt.Toolkit$2.run(Toolkit.java:821)
> java.security.AccessController.doPrivileged(Native Method)
> java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
> java.awt.Image.getScaledInstance(Image.java:158)
> com.everybuddystree.ImageScaler.scaleImageByWidth(ImageScaler.java:21)
> org.apache.jsp.image_jsp._jspService(org.apache.jsp.image_jsp:114)
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java
> :322) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
> :314) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The full
> stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs.
>
> ---------------------------------
> Apache Tomcat/5.5.12
>
>
>
>
>
>
> ---------------------------------
> Yahoo! Photos � Showcase holiday pictures in hardcover
> Photo Books. You design it and we'll bind it!
>
--
"You can lead a horse to water but you cannot make it float on its back."
~Dakota Jack~
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