Re: applet AccessControlException loading Rhino (js.jar is in archive)

[ECS Engineering]

> William Billingsley wrote: > > I'm using Batik in a couple of applets I'm developing ( > > http://www.cl.cam.ac.uk/~whb21/svgDraw/svgCircuit.html is one example; the > > applet is near the foot of the page) > > > > At startup an AccessControlException occurs when Batik tries to create a > > Rhino Interpreter from the InterpreterPool (exception trace at foot of > > email).  js.jar is included in the archive attribute for the applet on the > > page, and is available in the same directory as the applet. > >>From what I can see delving into the code, RhinoClassLoader specifically > > extends URLClassLoader, so I'm not sure if this a "can't find the class on > > the server and not allowed to look elsewhere" (as if I had not included > > js.jar) or if this exception is coming straight out of the way Batik is > > written, and will always produce this error if the applet is unsigned? > > I had what sounds like the same problem using Rhino in an unrelated project. > > The problem is that Rhino tries to 'compile' some of the functions from > _javascript_ into java as an optimization, and load it via a custom > ClassLoader.  There is supposed to be a resource setting somewhere that > controls the optimization behavior, but I couldn't make it work.  My > solution?  Remove all the classes in org.mozilla._javascript_.optimizer > packages from js.jar. > > Hope this helps, > - josh I'm missing something.  I ran "jar xf js.jar" to extract the files, then deleted the org/mozilla/_javascript_/optimizer directory.  Then "jar cf js.jar org" to recreate js.jar (after copying js.jar to js.jar.original).  I also switched to Crimson.   I'm still getting:   java.security.AccessControlException: access denied (java.lang.RuntimePermission createClassLoader) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkCreateClassLoader(Unknown Source) at java.lang.ClassLoader.<init>(Unknown Source) at java.security.SecureClassLoader.<init>(Unknown Source) at java.net.URLClassLoader.<init>(Unknown Source) at org.apache.batik.script.rhino.RhinoClassLoader.<init>(Unknown Source) at org.apache.batik.script.rhino.RhinoInterpreter.<init>(Unknown Source) at org.apache.batik.script.rhino.RhinoInterpreterFactory.createInterpreter(Unknown Source) at org.apache.batik.script.InterpreterPool.createInterpreter(Unknown Source) at org.apache.batik.bridge.BridgeContext.getInterpreter(Unknown Source) at org.apache.batik.bridge.BaseScriptingEnvironment.getInterpreter(Unknown Source) at org.apache.batik.bridge.BaseScriptingEnvironment.loadScripts(Unknown Source) at org.apache.batik.bridge.UpdateManager.dispatchSVGLoadEvent(Unknown Source) at org.apache.batik.swing.svg.SVGLoadEventDispatcher.run(Unknown Source)   It's not critical but I would like to enable _javascript_ in Batik in an applet (without signing or changing policies).  Any ideas?   Stan Dickerson [EMAIL PROTECTED]