Use class name as root key for JSON Jackson serialization

Question

Suppose I have a pojo:

import org.codehaus.jackson.map.*;

public class MyPojo {
    int id;
    public int getId()
    { return this.id; }

    public void          


        

Answer 1

there is another way i used and that worked for me. I am working with a third party jar, so i have no control for annotations. So i had to write through bit of hack.

Override: org.codehaus.jackson.map.ser.BeanSerializerFactory.findBeanProperties(SerializationConfig, BasicBeanDescription)

Add your property as below

List props = super.findBeanProperties(config, beanDesc);
BeanPropertyWriter bpw = null;
try {
     Class cc = beanDesc.getType().getRawClass();
     Method m = cc.getMethod("getClass", null);
     bpw = new BeanPropertyWriter("$className", null, null, m, null,true, null);
} catch (SecurityException e) {
  // TODO
} catch (NoSuchMethodException e) {
  // TODO
}
props.add(bpw);
return props;

This way i get more control and can do other kind of filters too.