Manifest Add-Exports vs. command line --add-exports
tom.w.hood at gmail.com
Wed Aug 16 21:14:00 UTC 2017
Thanks Richard. Sorry I didn't see your post before hitting send.
So does this mean there is no workaround for a webstart app that requires a
lot of the --add-export options?
On Wed, Aug 16, 2017 at 2:12 PM, Tom Hood <tom.w.hood at gmail.com> wrote:
> I found Alan's video <https://www.youtube.com/watch?v=eU8hCCjGSbE> (time:
> about 27:35) that goes with the slides pdf link and he mentions the
> Add-Exports line need to go in the manifest of the jar with the
> Main-Class. I just now tried that and it still didn't take effect. I'm
> still getting the same error:
> java.lang.IllegalAccessError: class com.sun.media.imageioimpl.plugins.pnm.PNMImageWriter
> (in unamed module @0x52a256fc) cannot access class sun.security.action.GetPropertyAction
> (in module java.base) because module java.base does not export
> sun.security.action to unnamed module @0x52a256fc
> at com.sun.media.imageioimpl.plugins.pnm.PNMImageWriter.<
> The META-INF/MANIFEST.MF looks like this:
> Manifest-Version: 1.0
> Trusted-Library: true
> Application-Library-Allowable-Codebase: *
> Application-Name: TheName
> Permissions: all-permissions
> *Add-Exports: java.base/sun.security.action*
> Created-By: 1.6.0_24 (Sun Microsystems Inc.)
> Caller-Allowable-Codebase: *
> Main-Class: path.to.TheMainClass
> Codebase: *
> Name: path/to/a/file.class
> SHA1-Digest: thedigest
> (many more such class+digest pairs)
> Should this work or am I using it incorrectly?
> -- Tom
> On Wed, Aug 16, 2017 at 1:30 PM, Tom Hood <tom.w.hood at gmail.com> wrote:
>> I need a little help understanding the difference between "Add-Exports:"
>> in a jar's manifest vs. the command line arg --add-exports. I can get
>> --add-exports to work, but not Add-Exports.
>> JDK Version: 9 build 181 windows 64
>> Slide 23 of http://openjdk.java.net/projects/jigsaw/talks/prepare-for-jd
>> k9-j1-2016.pdf seems to suggest Add-Exports in the manifest as an
>> alternative to --add-exports
>> Our webstart-launched app requires a long list of --add-module and/or
>> --add-exports command line options. The list is long enough that it
>> exceeds a limit on number of args and webstart fails to launch the app with
>> the popup "too many args to run".
>> Specifically, I was trying to allow jai_imageio.jar (1.0_01) to access
>> java.base/sun.security.action by adding --add-exports=java.base/sun.security.action=ALL-UNNAMED
>> to the java-vm-args in the jnlp. However, that one additional arg pushed
>> it over the edge and exceeded the limit.
>> This is the full j2se element in our jnlp:
>> <j2se version="1.9+" initial-heap-size="32m" max-heap-size="3072m"
>> java-vm-args="--add-modules=java.corba --add-exports
>> java.desktop/com.sun.java.swing.plaf.windows=ALL-UNNAMED --add-exports
>> java.desktop/sun.swing=ALL-UNNAMED --add-exports
>> java.desktop/sun.awt=ALL-UNNAMED --add-exports
>> java.desktop/sun.awt.image=ALL-UNNAMED --add-exports
>> java.desktop/sun.awt.windows=ALL-UNNAMED --add-exports
>> java.desktop/sun.awt.shell=ALL-UNNAMED --add-exports
>> java.desktop/sun.awt.dnd=ALL-UNNAMED --add-exports
>> java.base/sun.security.action=ALL-UNNAMED --add-exports=java.base/sun.se
>> I then removed the last --add-exports to keep under the arg limit and
>> instead added an Add-Exports line to the jai_imageio.jar
>> Add-Exports: java.base/sun.security.action
>> That doesn't appear to be taking affect. Am I using it incorrectly?
>> -- Tom
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