Comments on: How to REALLY do Page Preview in Java with Embedded HTML Rendering

By: Luis

Luis — Fri, 08 Jan 2010 09:36:33 +0000

copy jgre.dll in eclipse workspace to avoid problems

By: coachphil5

coachphil5 — Sat, 19 Dec 2009 20:00:54 +0000

I also needed a little help to get this running. Followed install instruction. To compile I used
javac -classpath “.;c:\jrex\JRex.jar” *.java
to execute:
C:\Progra~1\Java\jdk1.6.0_17\jre\bin\java -cp “.;c:\jrex\JRex.jar” -Djrex.dom.enable=true -Djrex.gre.path=c:\jrex\jrex_gr JRexTest

This was on a windows xp system probably doesn’t apple to other OS

By: kkk

kkk — Thu, 03 Sep 2009 15:01:01 +0000

Unable to start up JRex Engine.
org.mozilla.jrex.exception.JRexException
at org.mozilla.jrex.xpcom.JRexXPCOMImpl.startXPCOM(JRexXPCOMImpl.java:143)
at org.mozilla.jrex.JRexFactory.startEngine(JRexFactory.java:222)
at test.JRexTest.main(JRexTest.java:12)
Caused by: java.lang.Exception: is set to null!!!
at org.mozilla.jrex.xpcom.JRexXPCOMImpl$1.run(JRexXPCOMImpl.java:149)

By: anu

anu — Tue, 17 Jun 2008 23:56:37 +0000

Can u explain me wht changes did u make as im also getting the same error

By: Harry

Harry — Wed, 23 Jan 2008 21:02:41 +0000

me again!
i found out the cause of my previous error was not following directions
i forgot to change the path from JDK to JRE... jawt.dll couldn't be found and it threw me an error

By: Harry

Harry — Wed, 23 Jan 2008 00:24:09 +0000

um… me again I added this >>> System.setProperty(”jrex.gre.path”,”C:/jrex/jrex_gre/”);
still doesn’t work… sorry for posting repeatedly

Exception in thread “main” org.mozilla.jrex.exception.JRexException
at org.mozilla.jrex.xpcom.JRexXPCOMImpl.startXPCOM(JRexXPCOMImpl.java:143)
at org.mozilla.jrex.JRexFactory.startEngine(JRexFactory.java:222)
at test.JRexExample.main(JRexExample.java:52)
Caused by: java.lang.UnsatisfiedLinkError: org.mozilla.jrex.xpcom.JRexXPCOMImpl.
InitXPCOM(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
at org.mozilla.jrex.xpcom.JRexXPCOMImpl.InitXPCOM(Native Method)
at org.mozilla.jrex.xpcom.JRexXPCOMImpl.access$200(JRexXPCOMImpl.java:45)
at org.mozilla.jrex.xpcom.JRexXPCOMImpl$1.run(JRexXPCOMImpl.java:173)

By: Harry

Harry — Wed, 23 Jan 2008 00:03:25 +0000

sorry for the double post, I figured out how to add jrex.jar to the classpath and it compiles, but i have an error when i run it(in textpad)

***************** JRexL inited *****************
***************** JREX-Logging disabled *****************
Exception in thread "main" org.mozilla.jrex.exception.JRexException
at org.mozilla.jrex.xpcom.JRexXPCOMImpl.startXPCOM(JRexXPCOMImpl.java:143)
at org.mozilla.jrex.JRexFactory.startEngine(JRexFactory.java:222)
at test.JRexExample.main(JRexExample.java:50)
Caused by: java.lang.Exception: is set to null!!!
at org.mozilla.jrex.xpcom.JRexXPCOMImpl$1.run(JRexXPCOMImpl.java:149)

By: Harry

Harry — Tue, 22 Jan 2008 22:35:04 +0000

Hi, this is a year old but perhaps you can still help. I'm not familiar with packages like this and how to use them. I'm still learning java really. I attempted to compile JRex with Eclipse and that was a disaster. This seems simpler since you have the already compiled binaries, yet i cannot get your example code to compile. Do I need to change my java classpath? Right now i have all default settings and i use textpad to compile on Windows Vista. Should i not be able to create "JRexTest.java" in C:/jrex/jrex_gre and compile it? it has errors that say package org.mozilla.jrex doesn't exist

I'm just trying to get a java browser i can modify that supports javascript, Thanks

By: Harry

Harry — Tue, 22 Jan 2008 22:33:26 +0000

I'm just trying to get a java browser i can modify that supports javascript, Thanks

By: Radhouane

Radhouane — Sat, 17 Nov 2007 22:04:10 +0000

Thank you Dietrich for the tutorial, it is well explained.
I have done all steps but I have the Exception:UnsatisfiedLinkError.
Have you any idea what can I do ?

By: roli

roli — Wed, 24 Oct 2007 17:28:18 +0000

I think there is an error at the command:
"C:\Java\jdk1.5.0_08\jre\bin\java.exe -Djrex.gre.path=C:/jrex/jrex_gre text.JRexTest"

your package is named "test" not "text".
I have a suggestion for use the code line: "System.setProperty("jrex.gre.path","C:/jrex/jrex_gre");"
This semplify the command line.

I hope this article is very useful.
bye

By: Oggy

Oggy — Sat, 28 Apr 2007 18:57:02 +0000

Hallo, please post link to the zip Ajax preview page…thx

By: gogobu

gogobu — Sun, 28 Jan 2007 05:32:01 +0000

It’s certainly a hacky way to make it all work – maybe using a HTML Render isn’t the best solution afterall.

The other day I found a company with similar solution but they tackle it by dealing with display memory directly (http://www.guangmingsoft.net/).

It really makes you wonder how snap.com generates all those preview images…