*Hi all, *
*I got an error in my GWT application, when i call a server side methode to
get Data in order to display them in a pieChart (GWT visualization), here
is the code : *
*Server Side : *
public class SpdhServiceImpl extends RemoteServiceServlet implements
SpdhService {
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public Data_entity[] getEmployeesByCity() {
Data_entity[] d_entity = new Data_entity[5] ;
d_entity[0].setCity("Casablanca");
d_entity[0].setCount(23);
return d_entity ;
}
}
*Errors:*
*First part : *
PM com.google.appengine.tools.development.ApiProxyLocalImpl log
GRAVE: javax.servlet.ServletContext log: Exception while dispatching
incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public
abstract com.spt.sprd.shared.Data_entity[]
com.spt.sprd.client.SpdhService.getEmployeesByCity() throws
java.lang.IllegalArgumentException' threw an unexpected exception:
java.lang.NullPointerException
at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:389)
*Second part : *
Caused by: java.lang.NullPointerException
at
com.spt.sprd.server.SpdhServiceImpl.getEmployeesByCity(SpdhServiceImpl.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
*Thanks a lot for your help.*
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