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朋友你好我开发GWT应用程序，当我点击我的应用程序选项卡中我得到这个错误：错误GWT：“类型‘com.extjs.gxt.ui.client.data.BasePagingLoadConfig’是不能分配给“com.google.gwt.user.client.rpc.IsSerializable”
[WARN] deviceGroupServlet: An IncompatibleRemoteServiceException was thrown while processing this call.
com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: Type 'com.extjs.gxt.ui.client.data.BasePagingLoadConfig' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer. For security purposes, this type will not be deserialized.
at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:315)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:206)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:78)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:131)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.eclipse.kapua.app.console.filter.KapuaWebFilter.executeChain(KapuaWebFilter.java:44)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
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: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:582)
Caused by: com.google.gwt.user.client.rpc.SerializationException: Type 'com.extjs.gxt.ui.client.data.BasePagingLoadConfig' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer. For security purposes, this type will not be deserialized.
at com.google.gwt.user.server.rpc.impl.LegacySerializationPolicy.validateDeserialize(LegacySerializationPolicy.java:127)
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:550)
at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readObject(AbstractSerializationStreamReader.java:119)
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader$ValueReader$8.readValue(ServerSerializationStreamReader.java:138)
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeValue(ServerSerializationStreamReader.java:385)
at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:303)
那“deviceGroupServlet”是这个类：
public class GwtDeviceGroupServiceImpl extends KapuaRemoteServiceServlet implements GwtDeviceGroupService{
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public GwtDeviceGroup create(GwtDeviceGroupCreator gwtDeviceGroupCreator)
throws GwtKapuaException {
GwtDeviceGroup gwtDeviceGroup = null;
try {
KapuaLocator locator = KapuaLocator.getInstance();
DeviceGroupFactory factory = locator.getFactory(DeviceGroupFactory.class);
KapuaId scopeId = KapuaEid.parseCompactId(gwtDeviceGroupCreator.getScopeId());
DeviceGroupCreator creator = factory.newCreator(scopeId, gwtDeviceGroupCreator.getDevId());
DeviceGroupService service = locator.getService(DeviceGroupService.class);
DeviceGroup deviceGroup = service.create(creator);
gwtDeviceGroup = KapuaGwtModelConverter.convert(deviceGroup);
} catch (Exception e) {
KapuaExceptionHandler.handle(e);
}
return gwtDeviceGroup;
}
@Override
public void delete(String id, String deviceGroupId) throws GwtKapuaException {
try{
KapuaId scopeId = KapuaEid.parseCompactId(id);
KapuaId devGroupId2 = KapuaEid.parseCompactId(deviceGroupId);
KapuaLocator locator = KapuaLocator.getInstance();
DeviceGroupService service = locator.getService(DeviceGroupService.class);
service.delete(scopeId, devGroupId2);
} catch (Exception e) {
KapuaExceptionHandler.handle(e);
}
}
@Override
public GwtDeviceGroup find(String id, String devGroupId) throws GwtKapuaException {
KapuaId scopeId = KapuaEid.parseCompactId(id);
KapuaId devGroupId1 = KapuaEid.parseCompactId(devGroupId);
GwtDeviceGroup gwtDeviceGroup = null;
try {
KapuaLocator locator = KapuaLocator.getInstance();
DeviceGroupService service = locator.getService(DeviceGroupService.class);
DeviceGroup deviceGroup = service.find(scopeId, devGroupId1);
if (deviceGroup != null) {
gwtDeviceGroup = KapuaGwtModelConverter.convert(deviceGroup);
}
} catch (Exception e) {
KapuaExceptionHandler.handle(e);
}
return gwtDeviceGroup;
}
@Override
public PagingLoadResult<GwtDeviceGroup> query(PagingLoadConfig loadConfig,
GwtDeviceGroupQuery gwtDeviceGroupQuery) throws GwtKapuaException {
int totalLength = 0;
List<GwtDeviceGroup> gwtDeviceGroupList = new ArrayList<GwtDeviceGroup>();
try {
KapuaLocator locator = KapuaLocator.getInstance();
DeviceGroupService service = locator.getService(DeviceGroupService.class);
DevGroupQuery devGroupQuery = GwtKapuaModelConverter.convertDeviceGroupQuery(loadConfig, gwtDeviceGroupQuery);
DevGroupListResult devs = service.query(devGroupQuery);
if (!devs.isEmpty()){
if (devs.getSize() >= loadConfig.getLimit()) {
totalLength = devs.getSize();
}else{
totalLength = devs.getSize();
}
for (DeviceGroup d : devs.getItems()) {
gwtDeviceGroupList.add(KapuaGwtModelConverter.convert(d));
}
}
} catch (Exception e) {
KapuaExceptionHandler.handle(e);
}
return new BasePagingLoadResult<GwtDeviceGroup>(gwtDeviceGroupList, loadConfig.getOffset(), totalLength);
}
}
我的朋友有similkar问题，他与MVN干净的安装解决它和Maven更新，但我无法解决该选项的问题。无论我做什么，这个错误仍然存在。 可能有人帮助我吗？