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  Applet - Access to persistent storage denied  (Read 1256 times)
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Offline TheAnalogKid

JGO Coder


Projects: 2



« Posted 2009-08-31 13:54:21 »

Hi,

I've deployed my game as an applet. The game uses the Slick SavedState class to persist game data. When the game starts I get this error:
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java.net.MalformedURLException: Access to persistent storage denied for URL http://www.freewebs.com/jeromeblouin/incredibuilderSavedGame_Number
   at com.sun.jnlp.PersistenceServiceImpl.throwAccessDenied(Unknown Source)
   at com.sun.jnlp.PersistenceServiceImpl.checkAccess(Unknown Source)
   at com.sun.jnlp.PersistenceServiceImpl.create(Unknown Source)
   at org.newdawn.slick.muffin.WebstartMuffin.saveFile(WebstartMuffin.java:56)
   at org.newdawn.slick.SavedState.save(SavedState.java:137)
   at buildergame.GameParams.persistSavedParams(GameParams.java:370)
   at buildergame.GameParams.saveUnlockedLevelsCount(GameParams.java:364)
   at buildergame.GameParams.init(GameParams.java:157)
   at buildergame.BuilderGame.initStatesList(BuilderGame.java:108)
   at org.newdawn.slick.state.StateBasedGame.init(StateBasedGame.java:157)
   at org.newdawn.slick.AppletGameContainer$Container.initApplet(AppletGameContainer.java:275)
   at org.newdawn.slick.AppletGameContainer$ContainerPanel.initGL(AppletGameContainer.java:232)
   at org.newdawn.slick.AppletGameContainer$ContainerPanel.start(AppletGameContainer.java:219)
   at org.newdawn.slick.AppletGameContainer$1.run(AppletGameContainer.java:95)


I don't understand why I have this error because 1) it doesn't happen with webstart support and 2) my JNLP file declares the <all-permissions/> tag.

Any idea?

Thanks

Offline sunsett

Senior Devvie




ribbit!


« Reply #1 - Posted 2009-09-02 15:58:06 »

Is it a JNLP applet or using standard applet functionality?  It looks to be an applet sandbox issue to me.
Offline kappa
« League of Dukes »

JGO Kernel


Medals: 87
Projects: 15


★★★★★


« Reply #2 - Posted 2009-09-02 16:16:29 »

slicks SavedState doesn't support applets, only JWS or Standalone Applications.

not sure applets have a good way or API to store information without requiring further permissions. You can access the JWS api to store information with applets but only if you use a JNLP applet as sunsett mentioned but again this would only work for some people and not everyone.

Since you are using a signed applet you might as well save to the computers hard disk directly.
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