Timer isn't allowed on app engine. Did you mean to have your project configured to use app engine? If not, you can go into project properties and uncheck app engine. That'll make this go away.
On Thu, Jul 30, 2009 at 5:40 PM, Melodaf<[email protected]> wrote: > > Hey folks > > I am having a weird problem when I try to use a Timer on the server- > side code of my gwt app. > > After I import the package: > > import java.util.Timer; > > and declare my variable: > > public Timer refreshTimer; > > IF I do this: > > refreshTimer = new Timer(); > > I get these errors: > > > 30-Jul-2009 21:36:57 > com.google.appengine.tools.development.ApiProxyLocalImpl log > SEVERE: [1248989817022000] javax.servlet.ServletContext log: Exception > while dispatching incoming RPC call > com.google.gwt.user.server.rpc.UnexpectedException: Service method > 'public abstract java.util.ArrayList > com.google.gwt.spacefighter.client.SpaceFighterService.startup > (com.google.gwt.spacefighter.client.Phantom)' threw an unexpected > exception: java.security.AccessControlException: access denied > (java.lang.RuntimePermission modifyThreadGroup) > at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure > (RPC.java:360) > at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse > (RPC.java:546) > at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall > (RemoteServiceServlet.java:166) > at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost > (RemoteServiceServlet.java:86) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:713) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) > at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 487) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1093) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter > (TransactionCleanupFilter.java:43) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at com.google.appengine.tools.development.StaticFileFilter.doFilter > (StaticFileFilter.java:124) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter > (ServletHandler.java:1084) > at org.mortbay.jetty.servlet.ServletHandler.handle > (ServletHandler.java:360) > at org.mortbay.jetty.security.SecurityHandler.handle > (SecurityHandler.java:216) > at org.mortbay.jetty.servlet.SessionHandler.handle > (SessionHandler.java:181) > at org.mortbay.jetty.handler.ContextHandler.handle > (ContextHandler.java:712) > at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 405) > at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle > (DevAppEngineWebAppContext.java:54) > at org.mortbay.jetty.handler.HandlerWrapper.handle > (HandlerWrapper.java:139) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:313) > at org.mortbay.jetty.handler.HandlerWrapper.handle > (HandlerWrapper.java:139) > at org.mortbay.jetty.Server.handle(Server.java:313) > at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 506) > at org.mortbay.jetty.HttpConnection$RequestHandler.content > (HttpConnection.java:844) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) > at org.mortbay.io.nio.SelectChannelEndPoint.run > (SelectChannelEndPoint.java:396) > at org.mortbay.thread.BoundedThreadPool$PoolThread.run > (BoundedThreadPool.java:442) > Caused by: java.security.AccessControlException: access denied > (java.lang.RuntimePermission modifyThreadGroup) > at java.security.AccessControlContext.checkPermission(Unknown Source) > at java.security.AccessController.checkPermission(Unknown Source) > at java.lang.SecurityManager.checkPermission(Unknown Source) > at com.google.appengine.tools.development.DevAppServerFactory > $CustomSecurityManager.checkPermission(DevAppServerFactory.java:128) > at com.google.appengine.tools.development.DevAppServerFactory > $CustomSecurityManager.checkAccess(DevAppServerFactory.java:155) > at java.lang.ThreadGroup.checkAccess(Unknown Source) > at java.lang.Thread.init(Unknown Source) > at java.lang.Thread.<init>(Unknown Source) > at java.util.TimerThread.<init>(Unknown Source) > at java.util.Timer.<init>(Unknown Source) > at java.util.Timer.<init>(Unknown Source) > at com.google.gwt.spacefighter.server.SpaceFighterServiceImpl.startup > (SpaceFighterServiceImpl.java:46) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse > (RPC.java:527) > ... 27 more > > > If I comment the line that creates the timer all of those go away. > > It seems to me like the Timer creation somehow violates security and > does not allow the server to communicate with the client through RPC. > Someone can help me to figure out the problem and solve it ? > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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