Hi all,
I have a problem with rest endPoint that return an empty list.
I have a ws interface like this:
@GET
@Produces("multipart/form-data;type=text/xml")
@Path("/GetNetworkIDsManagedBy/{controller}")
public List<Integer> GetNetworkIDsManagedBy(
@PathParam("controller") int controller);
If in the implementor I return an empty list:
@Override
public List<Integer> GetNetworkIDsManagedBy(int controller) {
List<Integer> temp = new ArrayList<Integer>();
return temp;
}
this exception occurs:
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at
org.apache.cxf.jaxrs.ext.MessageContextImpl.convertToAttachments(MessageContextImpl.java:185)
at
org.apache.cxf.jaxrs.ext.MessageContextImpl.put(MessageContextImpl.java:159)
at
org.apache.cxf.jaxrs.impl.tl.ThreadLocalMessageContext.put(ThreadLocalMessageContext.java:83)
at
org.apache.cxf.jaxrs.provider.MultipartProvider.writeTo(MultipartProvider.java:245)
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.serializeMessage(JAXRSOutInterceptor.java:257)
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.processResponse(JAXRSOutInterceptor.java:144)
at
org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor.handleMessage(JAXRSOutInterceptor.java:83)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at
org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:77)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:123)
at
org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:323)
at
org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:289)
at
org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:72)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:942)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:878)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at
org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
at
org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:919)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:582)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:218)
at
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:52)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
at java.lang.Thread.run(Unknown Source)
However, if I return null instead of the empty list, no exception occurs and
the client receive the response.
I'd like to get the same behavior, returning an empty list.
Is it possible and how?
Do I use wrong annotations?
Thanks a lot,
Andrea
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