Good morning,
I'm using Google Web Toolkit for two weeks, and now, i'm trying to
make my own applications.
However, there is something wrong with the last one :
I have made a client part, and a server part.
Client part's code :
public class project implements EntryPoint {
public void onModuleLoad() {
GreetingServiceAsync service = (GreetingServiceAsync) GWT.create
(GreetingService.class);
((ServiceDefTarget) service).setServiceEntryPoint
(GWT.getModuleBaseURL () + "server");
service.createXML (new AsyncCallback () {
public void onFailure (Throwable caught) {
// Traitement en cas d'erreur
} // onFailure ()
public void onSuccess (Object result) {
// Traitement en cas de succès
Window.alert ((String) result);
} // onFailure ()
});
}
}
Code of "GreetingService.java" :
public interface GreetingService extends RemoteService {
String greetServer(String name);
public void createXML ();
}
Code of "GreetingServiceAsync.java" :
public interface GreetingServiceAsync {
void greetServer(String input, AsyncCallback<String> callback);
public void createXML (AsyncCallback callback);
}
Server part's code :
public class GreetingServiceImpl extends RemoteServiceServlet
implements GreetingService{
public void createXML () {
File file = new File("test.xml");
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String greetServer(String name) {
// TODO Auto-generated method stub
return null;
}
}
When I finally run the application in hosted mode, I get :
com.google.appengine.tools.development.ApiProxyLocalImpl log
SEVERE: [1241796266968000] javax.servlet.ServletContext log: Exception
while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method
'public abstract void
com.project.project.client.GreetingService.createXML()' threw an
unexpected exception: java.security.AccessControlException: access
denied (java.io.FilePermission test.xml write)
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 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
$ApiProxyHandler.handle(JettyContainerService.java:306)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$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.io.FilePermission test.xml write)
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:76)
at java.lang.SecurityManager.checkWrite(Unknown Source)
at java.io.File.createNewFile(Unknown Source)
at com.project.project.server.GreetingServiceImpl.createXML
(GreetingServiceImpl.java:35)
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)
... 25 more
I really don't know what I can do to create this file, I have heard
about editing java.policy, but it doesn't work.
Thank you for helping me, and excuse me if my english is not very well
(I'm french).
Regards,
Kard.
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