tmro

package net.tmro.demo.json;
 
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
 
@Path(“/myresource”)
public class MyResource {
 
	public MyResource() {
	}
 
	@GET
	@Produces(value=MediaType.APPLICATION_JSON)
	@Path(“/getsomething”)
	public MyComplexObject getSomething(@QueryParam(“idOfSomething”) String id) {
		//your complex object can expose primitive data types, objects as well as collections.
		//you are not required to do anything fancy as long as you implement
		return new MyComplexObject(id);
	}
}

package net.tmro.demo.json;
 
import java.io.*;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
 
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.*;
import javax.ws.rs.ext.*;
 
import com.sun.jersey.spi.resource.Singleton;
 
import net.sf.json.JSONSerializer;
 
@Provider
@Singleton
public class MyEntityProvider implements MessageBodyWriter<object> {
	//the json serializer used to write out objects to the output stream
	private final JSONSerializer serializer = new JSONSerializer();
 
	public long getSize(final Object t, final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
		return -1;
	}
 
	public boolean isWriteable(final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType) {
		return mediaType.isCompatible(MediaType.APPLICATION_JSON_TYPE);
	}
 
	public void writeTo(final Object t, final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType, final MultivaluedMap<string, Object> httpHeaders, final OutputStream entityStream) throws IOException, WebApplicationException {
		entityStream.write(serializer.toJSON(t).toString().getBytes());
	}
}

package net.tmro.demo.json;
 
@XmlRootElement
public class MyComplexObject extends AnotherObject {
 
	//fields: primitive data types, objects and collections. everything gets serialized unless
	//marked as transient
 
	public MyComplexObject(String id){
	[..]
	}
 
	//getters and setters
}