forums.smartfoxserver.com

Posted: **06 Aug 2012, 09:53**

I'm referencing a class included in the web service (deployed as a war via jetty on SFS) in a java extension. The extension is unable to locate the class giving the following error:

Code: Select all

jvm 1    | Exception in thread "SmartFoxServer" java.lang.NoClassDefFoundError: com/skilrock/rummy/service/GameMgmtService
jvm 1    | 	at java.lang.Class.getDeclaredConstructors0(Native Method)
jvm 1    | 	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
jvm 1    | 	at java.lang.Class.getConstructor0(Class.java:2699)
jvm 1    | 	at java.lang.Class.newInstance0(Class.java:326)
jvm 1    | 	at java.lang.Class.newInstance(Class.java:308)
jvm 1    | 	at it.gotoandplay.smartfoxserver.controllers.ExtensionHandler.loadExtension(ExtensionHandler.java:117)
jvm 1    | 	at it.gotoandplay.smartfoxserver.controllers.ExtensionHandler.createExtension(ExtensionHandler.java:207)
jvm 1    | 	at it.gotoandplay.smartfoxserver.controllers.ExtensionHandler.createExtension(ExtensionHandler.java:189)
jvm 1    | 	at it.gotoandplay.smartfoxserver.controllers.ExtensionHandler.parse_Extensions(ExtensionHandler.java:649)
jvm 1    | 	at it.gotoandplay.smartfoxserver.SmartFoxServer.setupZone(SmartFoxServer.java:2085)
jvm 1    | 	at it.gotoandplay.smartfoxserver.lib.ConfigReader.parse_Zones(ConfigReader.java:806)
jvm 1    | 	at it.gotoandplay.smartfoxserver.lib.ConfigReader.readZoneConfig(ConfigReader.java:174)
jvm 1    | 	at it.gotoandplay.smartfoxserver.SmartFoxServer.initServerSocket(SmartFoxServer.java:339)
jvm 1    | 	at it.gotoandplay.smartfoxserver.SmartFoxServer.run(SmartFoxServer.java:607)
jvm 1    | Caused by: java.lang.ClassNotFoundException: com.skilrock.rummy.service.GameMgmtService
jvm 1    | 	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
jvm 1    | 	at java.security.AccessController.doPrivileged(Native Method)
jvm 1    | 	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
jvm 1    | 	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
jvm 1    | 	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
jvm 1    | 	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
jvm 1    | 	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
jvm 1    | 	... 14 more

Is it possible to do this or am I doing something wrong here?

Thanks

Posted: **07 Aug 2012, 11:55**

They are different classloaders (Jetty and SmartFoxServer) so it won't work. SFS needs the libraries in its lib/ folder in order to be seen at the classpath level.
Thanks

Posted: **07 Aug 2012, 12:02**

So, if a user enters the parameters of a room via a jsp running on the web service, there is no way to directly access those from the extension to create a room with those parameters? Or, is there some workaround (without involving the use of a database to store those parameters).

Posted: **28 Aug 2012, 07:52**

There is an easier way which is calling the API directly from the servlet.
You collect the parameters in the servlet, create the RoomSettings object and finally call the SFSAPI.createRoom(...) method.

If you don't want to duplicate code in your Extension and in the servlet you can deploy a Class that takes care of the Room creation under the extensions/__lib__/ folder. This way it can be seen both by your Extensions and the servlet, and you avoid the code duplication.

Cheers

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