Blessed Geek Blessed Geek - 6 months ago 115
JSON Question

Jackson annotation - How to rename element names?

What is the equiv way in Jackson json annotation for the following jax-b annotations?

I need to produce json rather than xml and need to know the conventional jackson annotations that is equivalently denoted in jax-b.


  1. rename a field.

  2. use getters instead of fields.



These features are especially crucial if the json/xml element name is a java reserved word
like "
new
", "
public
", "
static
", etc.

So that we have to name the POJO fields as "_new_", "_public_", "_static_", etc, respectively,

but use jax-b annotation to rename them back to "new", "public", "static", etc
in the generated XML (and json) elements.

Renaming a field


@XmlAccessorType(XmlAccessType.FIELD)
public class Person{
@XmlElement(required = true)
protected String name;
@XmlElement(required = true)
protected String address;
@XmlElement(name = "contractor")
protected boolean _restricted_ ;
@XmlElement(name = "new")
protected boolean _new_ ;
}


Redirect to using property getter (I think this is how it is done in jax-b)


@XmlAccessorType(XmlAccessType.PROPERTY)
public class Person{
protected String name;
protected String address;
protected boolean _restricted_ ;
protected boolean _new_ ;

@XmlElement(required = true)
protected String getName() {return name;}
@XmlElement(required = true)
protected String getAddress() {return address;}
@XmlElement(name = "contractor")
protected boolean getRestricted() {return _restricted_;}
@XmlElement(name = "new")
protected boolean getNew(){return _new_;}
}

Answer

Probably it's a bit late but anyway..

you can rename a property just adding

@JsonProperty("contractor")

And by default Jackson use the getter and setter to serialize and deserialize.

For more detailed information: http://wiki.fasterxml.com/JacksonFAQ