Hallo Wouter,
Yes I had the same problem and I add:
-Djava.awt.headless=true
option in
/usr/local/tomcat5/bin/catalina.sh
file like this:
CATALINA_OPTS="-Djava.awt.headless=true"
and than everything works as expected.
Regards,
Jarrar.
Wouter Boers wrote:
That was the old way to fix a bug in the JVM I believe. Anyways nowadays you
can pass the following option to the server when starting:
-Djava.awt.headless=true
That will prevent the errors mentioned below when you don't have a graphical
shell running on your system.
Regards, Wouter
-----Original Message-----
From: Ben Kim [mailto:[EMAIL PROTECTED]
Sent: Friday, January 13, 2006 7:54 AM
To: Tomcat Users List
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:13
1) 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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