How to not send an empty collection in jackson

Question

I have an object that is curently being serialized to:

{
  \"label\" : \"label\",
  \"proxyIds\" : [ ],
  \"childIds\" : [ 161, 204, 206, 303, 311 ],
  \"act         


        

Answer 1

Since Jackson 2.0.0 (25-Mar-2012), you can also use the @JsonInclude annotation to control this on a per-field or per-class basis.

public class MyObject {

    @JsonInclude(Include.NON_EMPTY)
    private List proxyIds;

    ...
}