Spring 3.2 Custom JSON Serialization with Jackson ObjektMapper with XML Configuration

app-context.xml

<mvc:annotation-driven>
    <mvc:message-converters>
        <bean
            class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <property name="objectMapper" ref="jacksonObjectMapper"></property>
        </bean>
    </mvc:message-converters>
</mvc:annotation-driven>

<bean id="jacksonObjectMapper" class="de.taube.modellbau.JsonObjectMapper" />

JsonObjectMapper.java

//imports...

public class JsonObjectMapper extends ObjectMapper {

    @Autowired
    WebApplicationContext context;

    public JsonObjectMapper() {
        SimpleModule module = new SimpleModule();
        module.addSerializer(MyDomainType.class, new TestSerializer(context));

        this.registerModule(module);

    }
}