Hi Sergey,
I'm using CXF_2.7.3.
With your help I've found the solution using this BodyReader added clientSide:
@Provider
public class StringArrayBodyReader implements MessageBodyReader<Object> {
private static ObjectMapper jsonMapper = new ObjectMapper();
@Override
public boolean isReadable(Class<?> arg0, Type arg1, Annotation[] arg2,
MediaType arg3) {
return String[].class.isAssignableFrom(arg0);
}
@Override
public String[] readFrom(Class<Object> arg0, Type arg1,
Annotation[] arg2, MediaType arg3,
MultivaluedMap<String, String> arg4, InputStream arg5)
throws IOException, WebApplicationException {
// get the content as a string
String toSplit = streamToString(arg5);
String[] splitted = null;
if(toSplit!=null){
// try to split the String in a String[]
splitted = jsonMapper.readValue(toSplit, String[].class);
}else{
log.error("Failure splitting the content into a String[]");
}
return splitted;
}
private String streamToString(InputStream in) throws IOException {
try{
StringBuilder out = new StringBuilder();
BufferedReader br = new BufferedReader(new
InputStreamReader(in));
for(String line = br.readLine(); line != null; line =
br.readLine())
out.append(line);
br.close();
return out.toString();
}catch(Exception e){
log.error("Failure getting the String corresponding to the
InputStream",e);
return null;
}
}
}
Now it works good!! Thanks a lot!
I've a latest question for you:
if from the server I return a String[] with "normal" Strings, the String arrive
properly formatted to the BodyReader; if from the server I return "special"
Strings, like °C, in the BodyReader the String arrives modified: °C
I can add a cleaning of the Strings in the BodyReader at client side but I
prefer to return always a cleaned String from the Server: do you know if I can
add some encoding at the endPoints publication, or if it is better to add an
interceptor server side performing the cleaning, or something else?
Thanks,
Andrea
Date: Thu, 4 Jul 2013 06:31:24 -0700
From: [email protected]
To: [email protected]
Subject: Re: java.lang.ClassCastException: [B cannot be cast to
[Ljava.lang.Object
Hi, can you temp make that provider typed on Object, or if it is CXF
2.7.5, set "org.apache.cxf.jaxrs.providers.ignore.typevars" to true ?
It is a bug: the runtime does not currently deal at all with
GenericArrayType
I'll be fixing it shortly
Many thanks, Sergey
On 04/07/13 12:44, eanbiso wrote:
> Hi Sergey,
> unfortunately the StringArrayBodyReader is the only one provider I've added
> loading the endPoint at client side.
> If it can be useful I do a quick recap of the situation.
> - Using swagger u.i that expects a json format the response body is:
> ["°C"]
> and no problem occurs
> - This is the reponse I see from web browser when I call the REST web method
> http://*****/DMConfigRest/getUnitsOfMeasure/0/12/0/10/0:
> ["°C"]
> (there is an unexpected char: Â, but no problem occurs at the invocation)
> - Calling from java code the "No message body reader..." exception occurs
> client side.
> - In all the cases no exception occurs server side.
> - The annotations I've used to tag the ws interface are these:
>
> @WebService(targetNamespace = JettyConstants.DMConfigNameSpace)
> @Api(value = "/DMConfigRest", description = "Operations about
> DataModelConfigurator service, used from all the actors which want to edit
> the XML configuration file used by WSNDataModel")
> @Produces({"application/json"})
> public interface IDataModelConfig extends IPublishable { ...
>
>
> @GET
>
> @Path("/getUnitsOfMeasure/{appGardenID}/{protType}/{profileID}/{objectIDhigh}/{objectIDlow}")
> @ApiOperation(value = "Tells you what are the units of measure for the
> object.",
> notes = "Returns the unit of measure of the current
> object.", response = String.class,
> produces="application/xml,application/json")
> public String[] getUnitsOfMeasure(
> @ApiParam(value = "appGardenID", required = true) @WebParam(name
> = "appGardenID") @PathParam("appGardenID")
> @CxfWSAuthGrain(type=authType.appGarden) int appGardenID,
> @ApiParam(value = "protType", required = true) @WebParam(name =
> "protType") @PathParam("protType") short protType,
> @ApiParam(value = "profileID", required = true) @WebParam(name =
> "profileID") @PathParam("profileID") int profileID,
> @ApiParam(value = "objectIDhigh", required = true)
> @WebParam(name = "objectIDhigh") @PathParam("objectIDhigh") int objectIDhigh,
> @ApiParam(value = "objectIDlow", required = true) @WebParam(name
> = "objectIDlow") @PathParam("objectIDlow") int objectIDlow) throws
> InstantiationException;
>
> ....
> }
>
> - Now I've added the body reader at client side but I'm not able to arrive in
> its readFrom method.
>
>
> Thanks,
> Andrea
>
> Date: Thu, 4 Jul 2013 03:23:44 -0700
> From: [hidden email]
> To: [hidden email]
> Subject: Re: java.lang.ClassCastException: [B cannot be cast to
> [Ljava.lang.Object
>
>
>
>
> Hi Andrea,
>
>
> Re your earlier email: no problems about the questions, please keep them
>
> coming,
>
>
> Re this issue: do you have other providers registered ? Other than that,
>
> I can't think of why readFrom is not called
>
>
> Thanks, Sergey
>
>
> On 04/07/13 11:15, eanbiso wrote:
>
>> Hi Sergey,
>
>> I've tried this solution: I've add a BodyReader at clientSide to manage the
>
>> response from the server.
>
>> I've added this provider:
>
>>
>
>> @Provider
>
>> public class StringArrayBodyReader implements MessageBodyReader<String[]> {
>
>>
>
>> private static final Plat1Logger log = new
>
>> Plat1Logger(StringArrayBodyReader.class);
>
>>
>
>> @Override
>
>> public boolean isReadable(Class<?> arg0, Type arg1,
>> Annotation[] arg2,
>
>> MediaType arg3) {
>
>> return String[].class.isAssignableFrom(arg0);
>
>> }
>
>>
>
>> @Override
>
>> public String[] readFrom(Class<String[]> arg0, Type arg1,
>
>> Annotation[] arg2, MediaType arg3,
>
>> MultivaluedMap<String, String> arg4,
>> InputStream arg5)
>
>> throws IOException, WebApplicationException {
>
>> // TODO Auto-generated method stub
>
>> return null;
>
>> }
>
>> }
>
>>
>
>> at the loading of the REST endPoints:
>
>>
>
>> JAXRSClientFactoryBean proxyFactory = new
>> JAXRSClientFactoryBean();
>
>> proxyFactory.setServiceClass(clazz);
>
>> proxyFactory.setAddress(address);
>
>> proxyFactory.setProvider(new StringArrayBodyReader());
>
>>
>
>> by the client application.
>
>> Debugging I've seen that when I call a REST web method from the client I
>
>> arrive in the isReadable method of the provider and it returns true only if
>
>> the return type is a String[].... but I' m not yet able to arrive in the
>
>> readFrom method of the provider (this even if the isReadable has returned a
>
>> true value).
>
>> Do you know why this happens?
>
>> And how can I fix it and force to call the readFrom method when isReadable
>
>> returns true?
>
>> In this way I hope to solve the problem.
>
>> Thanks a lot,
>
>>
>
>> Andrea
>
>>
>
>>
>
>>
>
>>
>
>>
>
>>
>
>> --
>
>> View this message in context:
>> http://cxf.547215.n5.nabble.com/java-lang-ClassCastException-B-cannot-be-cast-to-Ljava-lang-Object-tp5730141p5730271.html
>> Sent from the cxf-user mailing list archive at Nabble.com.
>
>>
>
>
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