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Home » Eclipse Projects » Plugin Development Environment (PDE) » Web Start Eclipse Platform failing
Web Start Eclipse Platform failing [message #590867] Sat, 31 January 2009 22:01
Tim Stephenson is currently offline Tim StephensonFriend
Messages: 18
Registered: July 2009
Junior Member
Web Start Eclipse Platform not working

Hi,

Can anyone help me understand what is wrong with my attempt to start
Eclipse Platform (product: org.eclipse.platform.ide) using Java Web Start?
Since all the plugins of this feature are all I was hopeful that I would
be able to web start it - am I wrong?

Below is the detail of what I tried and the errors I got, thanks in
adavnce for your help!
tim

I read the help here:

http://help.eclipse.org/stable/index.jsp?topic=/org.eclipse. platform.doc.isv/guide/java_web_start.htm

Step 1: I created a wrapper feature that lists only the eclipse platform
feature and the equinox launcher plugin. Feature.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<feature
id="com.tibco.xpd.webstart"
label="Webstart Eclipse Platform Feature"
version="1.0.0.qualifier"
provider-name="ACME Inc.">

<description url="http://www.example.com/description">
[Enter Feature Description here.]
</description>

<copyright url="http://www.example.com/copyright">
[Enter Copyright Description here.]
</copyright>

<license url="http://www.example.com/license">
[Enter License Description here.]
</license>


<includes
id="org.eclipse.platform"
version="0.0.0"/>

<plugin
id="org.eclipse.equinox.launcher"
download-size="0"
install-size="0"
version="0.0.0"
unpack="false"/>

</feature>

Step 2: I exported and signed the deployable feature

Step 3: I copied the sample JNLP file and replaced as specified, it looks
like this:
<?xml version="1.0" encoding="UTF-8"?>
<jnlp
spec="1.0+"
codebase="http://localhost:8080/studio"
href="studio.jnlp">
<!-- URL to the site containing the jnlp application. It should
match the value used on export. Href, the name of this file -->
<information>
<!-- user readable name of the application -->
<title> Title </title>
<!-- vendor name -->
<vendor> Vendor </vendor>
<!-- vendor homepage -->
<homepage href="http://www.acme.com/" />
<!-- product description -->
<description> description </description>
<icon kind="splash" href="splash_ganymede.png"/>
</information>

<!--request all permissions from the application. This does not
change-->
<security>
<all-permissions/>
</security>

<!-- The name of the main class to execute. This does not change-->
<application-desc
main-class="org.eclipse.equinox.launcher.WebStartMain">
<argument>-nosplash</argument>
<argument>-product org.eclipse.platform.ide</argument>
</application-desc>

<resources>
<!-- Reference to the launcher jar. The version segment must be
updated to the version being used-->
<jar
href=" plugins/org.eclipse.equinox.launcher_1.0.100.v20080509-1800. jar "/>

<!-- Reference to all the plugins and features constituting the
application -->
<!-- Here we are referring to the wrapper feature since it
transitively refers to all the other plug-ins necessary -->
<extension
name="Wrapper feature"
href="features/com.acme.webstart_1.0.0.200901302240.jnlp"/ >

<!-- Information usually specified in the config.ini -->
<property
name="osgi.instance.area"
value="@user.home/workspace"/>
<property
name="osgi.configuration.area"
value="@user.home/studio"/>
<property
name="osgi.instance.area"
value="@user.home/studio"/>

<!-- The id of the product to run, like found in the overview page
of the product editor -->
<property
name="eclipse.product"
value="org.eclipse.platform.ide"/>
</resources>

<!-- Indicate on a platform basis which JRE to use -->
<resources os="Mac">
<j2se version="1.5+" java-vm-args="-XstartOnFirstThread"/>
</resources>
<resources os="Windows">
<j2se version="1.5+"/>
</resources>
<resources os="Linux" java-vm-args="-Xms256m -Xmx512m
-XX:MaxPermSize=256m -XX:+UnlockDiagnosticVMOptions -XX:+UnsyncloadClass">
<j2se version="1.5+"/>
</resources>

<!-- When an eclipse application is started with Web Start on Linux
the default windowing system is motif. -->
<resources os="Linux">
<property name="osgi.ws" value="gtk"/>
</resources>

</jnlp>

On starting up webstart downloads some jars (too few I am guessing judging
by the time taken) and then reports this in the eclipse log in
@user.home/studio
!SESSION Sat Jan 31 07:15:20 GMT 2009
------------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2009-01-31 07:15:20.713
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.io.IOException: Unable to initialize osgi.frameworkClassPath
at org.eclipse.equinox.launcher.Main.addBaseJars(Main.java:786)
at org.eclipse.equinox.launcher.Main.getDevPath(Main.java:683)
at org.eclipse.equinox.launcher.Main.getBootPath(Main.java:870)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:488)
at
org.eclipse.equinox.launcher.WebStartMain.basicRun(WebStartM ain.java:70)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at
org.eclipse.equinox.launcher.WebStartMain.main(WebStartMain. java:48)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

So I read the system properties docs here:
http://help.eclipse.org/stable/index.jsp?topic=/org.eclipse. platform.doc.isv/reference/misc/runtime-options.html

And then added this to the JNLP
<property
name="osgi.frameworkClassPath"
value="plugins/org.eclipse.osgi_3.4.0.v20080605-1900.jar/>

The error changes to this:
!SESSION Sat Jan 31 20:40:54 GMT 2009
------------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2009-01-31 20:40:54.514
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.ClassNotFoundException:
org.eclipse.core.runtime.adaptor.EclipseStarter
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 546)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at
org.eclipse.equinox.launcher.WebStartMain.basicRun(WebStartM ain.java:70)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at
org.eclipse.equinox.launcher.WebStartMain.main(WebStartMain. java:48)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.javaws.Launcher.executeApplication(Unknown Source)
at com.sun.javaws.Launcher.executeMainClass(Unknown Source)
at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)
at com.sun.javaws.Launcher.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
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