json - include class name in all objects serialized by jackson -

how include class name in serialized objects? e.g. adding "_class: 'myclass'" output value. there global setting that? don't want add annotation pojo classes.

i'm using spring4 webmvc @responsebody (only json format).

you need annotated type @jsontypeinfo annotation , configure how type information should serialized. refer this page reference.

example:

public class jacksonclassinfo {     @jsontypeinfo(use = jsontypeinfo.id.class, property = "__class")     public static class bean {         public final string field;          @jsoncreator         public bean(@jsonproperty("field") string field) {             this.field = field;         }          @override         public string tostring() {             return "bean{" +                     "field='" + field + '\'' +                     '}';         }     }      public static void main(string[] args) throws ioexception {         bean bean = new bean("value");         objectmapper mapper = new objectmapper();         string json = mapper.writerwithdefaultprettyprinter().writevalueasstring(bean);         system.out.println(json);         system.out.println(mapper.readvalue(json, bean.class));     } } 

output:

{   "__class" : "stackoverflow.jacksonclassinfo$bean",   "field" : "value" } bean{field='value'}