#JsonDeserialize not getting invoked when using spring - json

Question

I am using Jackson 2.x and spring-ws 4.0.6.
I have configured a rest service using CXF and configured mapper.
<jaxrs:providers>
<ref bean="jsonReader"/>
</jaxrs:providers>
Then configured this mapper like this
<bean id="jsonBodyReader" class="com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider">
<property name="mapper" ref="mapper"/>
</bean>
<bean id="mapper"
class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="annotationIntrospector">
<bean class="com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector"/>
</property>
<property name="featuresToEnable">
<array>
<util:constant static-field="com.fasterxml.jackson.databind.SerializationFeature.WRITE_DATES_WITH_ZONE_ID"/>
<util:constant static-field="com.fasterxml.jackson.databind.MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES"/>
</array>
</property>
<property name="featuresToDisable">
<array>
<util:constant static-field="com.fasterxml.jackson.databind.SerializationFeature.WRITE_DATES_AS_TIMESTAMPS"/>
<util:constant static-field="com.fasterxml.jackson.databind.SerializationFeature.WRITE_EMPTY_JSON_ARRAYS"/>
<util:constant static-field="com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES"/>
</array>
</property>
<property name="serializationInclusion" value="NON_NULL"/>
</bean>
Now I want to map this json to List<HashMap<String,String>>
{
"identities": [{
"id1": "12345",
"id2": "16777"
},{
"id3": "12345"
}]
}
I can get as many ids - id1, id2, id3.. so I cannot create a pojo with fields name id1, id2 and so on.
I annotated the field in my POJO like this
#JsonDeserialize(using = CustDeserializer.class)
private List<HashMap<String,String>> identities;
CustDeserializer looks like this
public class CustDeserializer extends JsonDeserializer>> {
#Override
public List> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
ObjectCodec oc = jp.getCodec();
JsonNode node = oc.readTree(jp);
List> identities = new ArrayList>();
for(int i=0;i> elem = node1.fields();
HashMap map= new HashMap();
while(elem.hasNext()){
Entry el = elem.next();
String name = el.getKey();
String value = el.getValue().asText();
map.put(name, value);
}
identities.add(map);
}
return identities;
}
Now when I call the rest service, the list is populated with hashmaps containing key/value pairs. But CustDeserializer class is not invoked so I am not able to customize my list. It is getting transformed by Jackson's CollectionDeserializer by default.
When I try the same in a standalone java program, it works and my deserializer is called
ObjectMapper mapper = new ObjectMapper();
try {
JsonRequest h = mapper.readValue(new File("request.json"), JsonRequest.class);
System.out.println(h);
}
Output: JsonRequest [name=XYZ, identities=[{id2=16777, id1=12345}, {id3=12345}]]
But somehow it doesn't work when I am using it in the context of CXF and Spring.