Java Web Start app fails to update from a shortcut


Question

I have deployed a Java(FX) desktop app using Java Web Start. The updates work fine but only if I run the downloaded JNLP by hand, they do not work from shortcuts installed to desktop and menu.

Here is my JNLP:

<?xml version="1.0" encoding="utf-8"?>
<jnlp codebase="http://192.168.1.85/deploy/" spec="1.0" xmlns:jfx="http://javafx.com" href="Companyapp.jnlp">

    <information>

        <title>Companyapp</title>
        <vendor>Media Citizens</vendor>
        <description>Companyapp Presentation Desktop</description>
        <homepage href="http://192.168.1.85/deploy/"/>

        <offline-allowed/>

        <shortcut online="false" install="true">
            <desktop />
            <menu submenu="Companyapp"/>
        </shortcut>

        <icon kind="shortcut"   href="http://192.168.1.85/deploy/icons/32x32.gif"           width="32"      height="32"     />
        <icon kind="shortcut"   href="http://192.168.1.85/deploy/icons/64x64.gif"           width="64"      height="64"     />
        <icon kind="splash"     href="http://192.168.1.85/deploy/icons/splash_screen.jpg"   width="1024"    height="768"    />
    </information>

    <update check="always" policy="always" />

    <security>
        <all-permissions/>
    </security>

    <resources>
        <jfx:javafx-runtime version="2.2+" href="http://javadl.sun.com/webapps/download/GetFile/javafx-latest/windows-i586/javafx2.jnlp"/>
    </resources>

    <resources>
        <j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>

        <jar href="http://192.168.1.85/deploy/Companyapp.jar" main="true"                                   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/async-http-client-1.7.8.jar"             size="477791"   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/commons-codec-1.7.jar"                       size="259600"   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/commons-io-2.4.jar"                          size="185140"   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/commons-lang3-3.1.jar"                       size="315805"   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/commons-logging-1.1.jar"                 size="52915"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/json-simple-1.1.1.jar"                       size="23737"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/slf4j-api-1.7.2.jar"                     size="26083"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/sqlite-jdbc-3.7.15-SNAPSHOT.jar"         size="3702257"  download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/ws-commons-util-1.0.2.jar"                   size="34407"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/xmlrpc-client-3.1.3.jar"                 size="58573"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/xmlrpc-common-3.1.3.jar"                 size="109131"   download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/zt-zip-1.5.jar"                              size="33059"    download="eager"    />
        <jar href="http://192.168.1.85/deploy/libs/javaws.jar"                                  size="893738"   download="eager"    />
    </resources>

    <jfx:javafx-desc  width="0" height="0" main-class="com.mediacitizens.companyapp.presentation.desktop.Main"  name="Company App" />
    <application-desc main-class="com.mediacitizens.companyapp.presentation.desktop.Main" />
</jnlp>

Just in case, here is the part of my program that installs the shortcuts:

// install shortcuts
try
{
    IntegrationService is = null;
    try
    {
        is = (IntegrationService) ServiceManager.lookup("javax.jnlp.IntegrationService");
    }
    catch (UnavailableServiceException use)
    {
        throw new ApplicationError(use.getLocalizedMessage());
    }

    if (!is.hasDesktopShortcut())
    {
        if (!is.requestShortcut(true, true, "Companyapp"))
        {
            throw new ApplicationError("Integration failed.");
        }
    }
    else
    {
        //initialController.dialog("Shortcuts exist", "Go away!", null);
    }
}
catch (ApplicationError e)
{
    initialController.dialog("Failed to integrate a shortcut on your computer.\nCause: " + e.getLocalizedMessage(), "I understand", null);
}

Update 1

I removed <offline-allowed /> and now it updates from a shortcut but I can't start the application offline. So apparently I should be able to? Its giving me this error:

enter image description here

To be fair, I do try to connect to a server on startup, but that is not causing this error: it has a 2 second timeout and looks like that:

try
{
    isOffline = !(InetAddress.getByName(Config.domain + "." + Config.serverDomain).isReachable(2000));
}
catch (IOException e)
{
    e.printStackTrace();
}

Irregardless, my code is not referenced in the error, so I guess if I don't have <offline-allowed /> I cannot run the app offline at all? Is this true? If yes, this is a massive problem for deployment with JWS, I'll probably just ditch it altogether...


Update 2

I think I may be hitting this: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7121086 anyone knows a workaround?

In the bug it says

Get rif of every jnlp used as extension. meaning mix all in one. At this condition that works

So I should mix JavaFX as a jar into my JNLP?

1
3
2/14/2013 3:05:12 PM

Accepted Answer

I managed to solve the problem without removing <offline-allowed />, here is the JNLP:

<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="6.0+" codebase="http://192.168.1.85/deploy/" href="Companyapp.jnlp">

    <information>
        <title>Companyapp</title>
        <vendor>Media Citizens</vendor>
        <description>Companyapp Presentation Desktop</description>
        <homepage href="http://192.168.1.85" />

        <shortcut online="true" install="true">
            <desktop />
            <menu submenu="Companyapp" />
        </shortcut>

        <offline-allowed />

        <icon kind="shortcut" href="http://192.168.1.85/deploy/icons/32x32.gif" width="32" height="32" />
        <icon kind="shortcut" href="http://192.168.1.85/deploy/icons/64x64.gif" width="64" height="64" />
        <icon kind="splash" href="http://192.168.1.85/deploy/icons/splash_screen.jpg" width="1024" height="768" />
    </information>

    <update check="always" policy="prompt-update" />

    <security>
        <all-permissions />
    </security>

    <resources>
        <jfx:javafx-runtime version="2.2+" href="http://javadl.sun.com/webapps/download/GetFile/javafx-latest/windows-i586/javafx2.jnlp" />
    </resources>

    <resources>
        <j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se" />

        <jar href="http://192.168.1.85/deploy/Companyapp.jar" main="true" />
        <jar href="http://192.168.1.85/deploy/libs/async-http-client-1.7.8.jar" size="477791" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/commons-codec-1.7.jar" size="259600" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/commons-io-2.4.jar" size="185140" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/commons-lang3-3.1.jar" size="315805" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/commons-logging-1.1.jar" size="52915" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/json-simple-1.1.1.jar" size="23737" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/slf4j-api-1.7.2.jar" size="26083" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/sqlite-jdbc-3.7.15-SNAPSHOT.jar" size="3702257" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/ws-commons-util-1.0.2.jar" size="34407" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/xmlrpc-client-3.1.3.jar" size="58573" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/xmlrpc-common-3.1.3.jar" size="109131" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/zt-zip-1.5.jar" size="33059" download="eager" />
        <jar href="http://192.168.1.85/deploy/libs/javaws.jar" size="893738" download="eager" />
    </resources>

    <application-desc main-class="com.mediacitizens.companyapp.presentation.desktop.Main" />
</jnlp>

And to make sure the server handles updates correctly, install mod_expires for Apache and put this .htaccess in the folder where the JNLP and JAR are:

DirectoryIndex index.html

AddType application/x-java-jnlp-file .jnlp
AddType application/x-java-archive .jar
AddType application/x-java-archive-diff .jardiff

<IfModule mod_expires.c>
  ExpiresActive On
  ExpiresDefault "modification"
</IfModule>
2
2/22/2013 11:55:37 AM

What was it that made it not work before and what is it about your updated jnlp which allows it to work?

The problem is in the JNLP markup:

The shortcut container has the attribute: online="false".

This causes the desktop shortcut to be configured, so that it runs javaws with the -offline parameter, so that it runs with the cached jnlp.

The problem persists even, when you correct the jnlp on the server, because locally the cached jnlp is still being used by the shortcut.

The best solution is to instruct the user to launch the application once more from the browser, since that will cause the javaws to update the shortcut on the client to the correct parameter settings - assuming that you have fixed the jnlp on the server.

Actually there's no reason specify this attribute since the default is "true", which would cause the expected behaviour, but the web is afloat with jnlp markup that sets it to false. Also there's virtually no documentation on this attribute, which makes the problem worse.

Per


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