java - Jackson serializer for primitive types -

i writing custom serializer convert double values strings in json objects. code far:

public string tojson(object obj) throws ioexception {     objectmapper mapper = new objectmapper();     simplemodule module = new simplemodule("doubleserializer", new version(1, 0, 0, ""));      module.addserializer(double.class, new doubleserializer());     mapper.registermodule(module);     return mapper.writevalueasstring(obj); }  public class doubleserializer extends jsonserializer<double> {     @override     public void serialize(double value, jsongenerator jgen,             serializerprovider provider) throws ioexception,             jsonprocessingexception {         string realstring = new bigdecimal(value).toplainstring();         jgen.writestring(realstring);     } } 

this works fine double (class members) not work double (primitive type) members. example,

    public void test() throws ioexception {         jsonmaker pr = new jsonmaker();         testclass cl = new testclass();          system.out.println(pr.tojson(cl));      }      class testclass {         public double x;         public double y;         public testclass() {             x = y = 1111142143543543534645145325d;         }     } 

returns: {"x":"1111142143543543565865975808","y":1.1111421435435436e27}

is there way make follow same behavior both cases?

you can register jsonserializer primitive type double.

module.addserializer(double.class, new doubleserializer());