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This gist shows how to add a listener for bean serialization in jackson 1.9.12 and how to provide it using Resteasy 3.0.7. In this example, the listerner is considered as a Chain Of Command.
public interface BeanSerializerListener {
void postSerialization(Object value, JsonGenerator jgen) throws IOException;
}
public class MyBeanSerializer extends BeanSerializerBase {
private final BeanSerializerListener serializerListener;
protected MyBeanSerializer(final BeanSerializerBase src, final BeanSerializerListener serializerListener) {
super(src);
this.serializerListener = serializerListener;
}
@Override
public void serialize(final Object bean, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonGenerationException {
jgen.writeStartObject();
if (_propertyFilterId != null) {
serializeFieldsFiltered(bean, jgen, provider);
} else {
serializeFields(bean, jgen, provider);
}
serializerListener.postSerialization(bean, jgen);
jgen.writeEndObject();
}
}
public class MyBeanSerializerBuilder extends BeanSerializerBuilder {
private final BeanSerializerListener serializerListener;
public MyBeanSerializerBuilder(final BasicBeanDescription beanDesc, final BeanSerializerListener serializerListener) {
super(beanDesc);
this.serializerListener = serializerListener;
}
@Override
public JsonSerializer<?> build() {
BeanSerializerBase src = (BeanSerializerBase) super.build();
return new MyBeanSerializer(src, serializerListener);
}
}
public class MyBeanSerializerFactory extends BeanSerializerFactory {
private final BeanSerializerListener serializerListener;
public MyBeanSerializerFactory(final BeanSerializerListener serializerListener) {
super(null);
this.serializerListener = serializerListener;
}
@Override
protected BeanSerializerBuilder constructBeanSerializerBuilder(final BasicBeanDescription beanDesc) {
return new MyBeanSerializerBuilder(beanDesc, serializerListener);
}
}
@Provider
public class ObjectMapperProvider implements ContextResolver<ObjectMapper> {
private final MapperConfigurator mapperCfg;
public ObjectMapperProvider() {
mapperCfg = new MapperConfigurator(null, null);
mapperCfg.setAnnotationsToUse(new Annotations[]{Annotations.JACKSON, Annotations.JAXB});
mapperCfg.getConfiguredMapper().setSerializerFactory(serializerFactory);
}
@Override
public ObjectMapper getContext(final Class<?> type) {
return mapperCfg.getConfiguredMapper();
}
}
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