Check here
http://stackoverflow.com/questions/4202964/serializationpolicy-error-when-performing-rpc-from-within-gwt-application
2011/11/4 laredotornado <laredotorn...@zipmail.com>
> Hi, Yes, in all three classes I have a no-argument public constructor,
> like
>
> public XmlNode() { }
>
> Is there a way to get more specific information about why its
> failing? Thanks, - Dave
>
> On Nov 4, 9:37 am, Juan Pablo Gardella <gardellajuanpa...@gmail.com>
> wrote:
> > Do you have a public/package default constructor?
> >
> > 2011/11/4 Juan Pablo Gardella <gardellajuanpa...@gmail.com>
> >
> >
> >
> >
> >
> >
> >
> > > puff, ignore the last mail.
> >
> > > 2011/11/4 Juan Pablo Gardella <gardellajuanpa...@gmail.com>
> >
> > >> You don't have in classpath the sources
> > >> of com.cme.clearing.common.xml.XmlNode. This is the cause.
> >
> > >> 2011/11/4 laredotornado <laredotorn...@zipmail.com>
> >
> > >>> Hi,
> >
> > >>> I'm trying to pass an object over RPC but the call is failing with a
> > >>> "com.google.gwt.user.client.rpc.SerializationException" exception.
> > >>> Complete stack trace is below. How do I figure out what field is
> > >>> causing the problem? The class and its member fields in question
> > >>> are ...
> >
> > >>> public class XmlNode implements Serializable {
> > >>> private Node dataRoot;
> > >>> private List<XmlNode> parents = new ArrayList<XmlNode>();
> > >>> private List<XmlNode> children = new ArrayList<XmlNode>();
> > >>> ...
> >
> > >>> public class Node implements Serializable {
> > >>> private long id;
> > >>> private short type;
> > >>> private String name;
> > >>> private String value;
> > >>> private List<Node> children;
> > >>> private Node parent;
> > >>> private Map<String, Attribute> attributes;
> > >>> ...
> > >>> public class Attribute implements Serializable {
> > >>> private String name;
> > >>> private Object value;
> > >>> private Node node;
> >
> > >>> There are getters and setters for everything. How do I get GWT to
> > >>> tell me more about why Serialization is failing? - Dave
> >
> > >>> ps - The error stack trace is
> > >>> com.google.gwt.user.client.rpc.SerializationException: Type
> > >>> 'com.cme.clearing.common.xml.XmlNode' was not included in the set of
> > >>> types which can be serialized by this SerializationPolicy or its
> Class
> > >>> object could not be loaded. For security purposes, this type will not
> > >>> be serialized.: instance = XmlNode
> > >>> at
> >
> > >>>
> com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.seriali
> ze(ServerSerializationStreamWriter.java:
> > >>> 619)
> > >>> at
> >
> > >>>
> com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.write
> Object(AbstractSerializationStreamWriter.java:
> > >>> 126)
> > >>> at
> > >>> com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter
> > >>> $ValueWriter$8.write(ServerSerializationStreamWriter.java:153)
> > >>> at
> >
> > >>>
> com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.seriali
> zeValue(ServerSerializationStreamWriter.java:
> > >>> 539)
> > >>> at
> com.google.gwt.user.server.rpc.RPC.encodeResponse(RPC.java:616)
> > >>> at
> > >>> com.google.gwt.user.server.rpc.RPC.encodeResponseForSuccess(RPC.java:
> > >>> 474)
> > >>> at
> > >>> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > >>> 571)
> > >>> at
> >
> > >>>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServi
> ceServlet.java:
> > >>> 208)
> > >>> at
> >
> > >>>
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServi
> ceServlet.java:
> > >>> 248)
> > >>> at
> >
> > >>>
> com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(Abstract
> RemoteServiceServlet.java:
> > >>> 62)
> > >>> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
> > >>> at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> > >>> at
> > >>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> > >>> 487)
> > >>> at
> > >>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> > >>> 362)
> > >>> 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:
> > >>> 729)
> > >>> at
> > >>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> > >>> 405)
> > >>> at
> > >>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > >>> 152)
> > >>> at
> >
> > >>>
> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:
> > >>> 49)
> > >>> at
> > >>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > >>> 152)
> > >>> at org.mortbay.jetty.Server.handle(Server.java:324)
> > >>> at
> > >>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
> > >>> 505)
> > >>> at org.mortbay.jetty.HttpConnection
> > >>> $RequestHandler.content(HttpConnection.java:843)
> > >>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
> > >>> at
> > >>> org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> > >>> at
> > >>> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> > >>> at
> > >>>
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
> > >>> 395)
> > >>> at org.mortbay.thread.QueuedThreadPool
> > >>> $PoolThread.run(QueuedThreadPool.java:488)
> >
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