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Stevn
Asked: 2020-10-17 09:50:52 +0800 CST 2020-10-17 09:50:52 +0800 CST

How to send json encode by ajax?

  • 772

I am trying to send an object in json:

{
  'salario' : 0,
  'usuario' : {
    'nombre' : 'usuario1',
    'bono' : null,    
    'uf' : null,
    'ultimaRenta' : 1698567,
    'utm' : null
  },
  'empleado' : 12,
  'param' : {    
    'movilizacion' : 46786.0
  },
  'ahorro' : 84525
}

In an ajax:

$.ajax({
            url : url2,
            dataType : 'jsonp',
            type : 'POST',
            data : jsonEnviado,
            jsonpCallback : "myJSON",
            success : function(data, textStatus, jqXHR) {
                var rentaFinal = data.renta;
                var num = data.renta;
                num = num.toString().split('').reverse().join('').replace(
                        /(?=\d*\.?)(\d{3})/g, '$1.');
                num = num.split('').reverse().join('').replace(/^[\.]/, '');
                rentaFinal = num;

                document.getElementById('renta').innerHTML = "$" +  rentaFinal;
            }
        });

But when fetching it from the controller, the object comesnull

the method signature is:public String calculaRenta(HttpServletRequest req){

And I am getting the object with:req.getParameter("jsonEnviado");

I have searched for a way to do an encode but it has not worked for me.

javascript

1 Answers

  1. Best Answer

    Try instead of sending:

     data:jsonEnviado

    Send:

    data: {jsonEnviado : JSON.stringify(jsonEnviado) }

    This is so that the json becomes a request parameter and you can do the conversion on the server.

    • 3