web services - Capture JSON from representation and return String value -


i have working webservice shown below return double value in json format e.g. {"pmc":17.34}

@override @post("json") public representation post(representation entity) throws resourceexception {     jsonobjectbuilder response = json.createobjectbuilder();      try {         string json = entity.gettext(); // json input client         map<string, object> map = jsonutils.tomap(json); // convert input map         double result = matrix.calculatepmc(map); // calculate pmc value         response.add("pmc", result);     } catch (ioexception e) {         logger.error(this.getclass() + " - ioexception - " + e);         getresponse().setstatus(status.server_error_internal);     }      return new stringrepresentation(response.build().tostring());        }

now, change program return double value, i.e. 17.34, modified program following:

@post public double post(response response) {     double result = 0;      try {         string json = response.getentity().gettext(); //get json input client         map<string, object> map = jsonutils.tomap(json); // convert input map         result = matrix.calculatepmc(map); // calculate pmc value     } catch (ioexception e) {         logger.error(this.getclass() + " - ioexception - " + e);         getresponse().setstatus(status.server_error_internal);     }      return result;       }

when run 415 unsupported media type error. missing?

misread program requirements, should return string value (of double) instead. following final working program:

@post public string post(string json) {     double result = 0;     map<string, object> map = jsonutils.tomap(json); // convert json input map     result = matrix.calculatepmc(map); // calculate pmc value      return string.valueof(result); }

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