java - How to ignore json property in encapsulated design -

class a{     private b b;     //other properties    //getter setter } // unable add jsonignore in class due dependency in other module class b {    int id;    string name;    string defname; } 

i want ignore defname in class a json building codehaus.jackson api.

i need {a:{id:value,name:value}}.

you can use mixin purpose.

• first create abstract class jsonignore annotation:

  abstract class mixin{      @jsonignore      abstract string getdefname(); } 

• then use below. (be sure getter name of defname field getdefname() in b class or change in mixin class yours.)

  objectmapper objectmapper = new objectmapper(); objectmapper.addmixin( b.class, mixin.class ); objectmapper.writevalue( system.out, new a() ); 

this prints:

{"b":{"id":1,"name":"sercan"}}