How can I replace JSON Converter with my own - json

Question

I'm looking to use JACKSON instead of grails JSON ,without changing the auto-scaffolded contollers.
Is it possible to seamlessly replace the current grails JSON converter with another one ?
Are there any classes to implement other then AbstractConverter...

Answer 1

Should be pretty simple. AbstractConverter is all you need to extend to do:
render result as JackSON
Something like this***:
*** taken from here: https://github.com/sjhorn/grails-jackson/blob/master/src/groovy/com/hornmicro/JackSON.groovy
class JackSON extends AbstractConverter {
Object target
public JackSON() {
}
public JackSON(Object target) {
this()
setTarget(target)
}
public void render(Writer out) throws ConverterException {
try {
ObjectMapper mapper = new ObjectMapper()
mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS)
mapper.configure(JsonGenerator.Feature.FLUSH_PASSED_TO_STREAM, false)
mapper.configure(JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT, false)
mapper.writeValue(out, target)
} catch(e) {
throw new ConverterException(e)
}
try {
out.flush()
out.close()
} catch (Exception e) {
log.warn("Unexpected exception while closing a writer: " + e.getMessage())
}
}
public void render(HttpServletResponse response) throws ConverterException {
response.setContentType(GrailsWebUtil.getContentType("application/json", "UTF-8"));
try {
render(response.getWriter())
} catch (IOException e) {
throw new ConverterException(e)
}
}
public Object getWriter() throws ConverterException {
throw new ConverterException("Not Implemented")
}
public void convertAnother(Object o) throws ConverterException {
throw new ConverterException("Not Implemented")
}
public void build(Closure c) throws ConverterException {
throw new ConverterException("Not Implemented")
}
public ObjectMarshaller lookupObjectMarshaller(Object target) {
return null
}
public void setTarget(Object target) {
this.target = target
}
}