Hi Abe, I came across the same problem as you, and I don't think there's any workaround other than using JSON or converting your JS objects to 'pure' Java objects such as java.util.HashMaps etc.
Considering the complexity of Java serialization, I think JSON is actually quite compelling, but of course it depends on your project's requirements. Hannes On Sep 1, 7:34 am, Abe Parvand <[email protected]> wrote: > Hey all, > > I tried posting this on the appengine group a while back, but no > success. > > For reference, it's here: (http://groups.google.com/group/google- > appengine-java/browse_thread/thread/2124e4ffdbe79ff7/ca50fbb0408ba87f? > lnk=gst&q=java.io.SerializablePermission#ca50fbb0408ba87f) > > Long story short, doing the following breaks in appengine: > > Scriptable obj = ... > > ByteArrayOutputStream bs = new > ByteArrayOutputStream(); > ScriptableOutputStream out = new > ScriptableOutputStream(bs, scope); // breaks here! > out.writeObject(obj); > > Blob blobToSave = new Blob(bs.toByteArray()); > // do something with blob > > bs.close(); > out.close(); > > The reason is because in appengine, there is a missing security > permission that the Rhino Serializer is trying to use: > > Uncaught exception from servlet > java.security.AccessControlException: access denied > (java.io.SerializablePermission enableSubstitution) > at java.security.AccessControlContext.checkPermission(Unknown > Source) > at java.security.AccessController.checkPermission(Unknown > Source) > at java.lang.SecurityManager.checkPermission(Unknown Source) > at java.io.ObjectOutputStream.enableReplaceObject(Unknown > Source) > at > org.mozilla.javascript.serialize.ScriptableOutputStream.<init> > (ScriptableOutputStream.java:84) > > Does anyone know how I can use the serializer in appengine? I have > implemented a utility class that converts between Scriptable and JSON > string representation, but it is admittedly not as robust as the > serializer and I really don't want to reinvent the wheel here. I > greatly appreciate your help! _______________________________________________ dev-tech-js-engine-rhino mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-js-engine-rhino
