spring - Java get one JSONObject from a JsonArray and set json response

Question

I have a Json array

{
   "id":33,
   "dataContent":"user1",
   "temp":"36"
},
{
   "id":33,
   "dataContent":"user2",
   "temp":"36"
},
{
   "id":33,
   "dataContent":"user3",
   "temp":"39"
},
{
   "id":21,
   "dataContent":"user4",
   "temp":"38"
},
{
   "id":22,
   "dataContent":"user5",
   "temp":"37"
}

that am generating using the code

@PostMapping(value = "/temperature")
    public ResponseEntity<?> Temperature(@Valid @RequestBody Activation activation) {
        Temperature temperature = new Temperature();
        temperature.setCode(activation.getDataContent());
        temperature.setDatecreated(new Date());
        temperature.setUser_id(activation.getId());
        temperature.setTemperature(activation.getTemp());
        temperatureRepository.save(temperature);
        
        return ResponseEntity.ok("Temperature Updated");
    }

how can I set a check in such a way that the if the temperature is greater than 38 set a json response as not cleared and if it is less than 38 the response returned is cleared.

{

   "message":"cleared"

}

question from:https://stackoverflow.com/questions/65540642/java-get-one-jsonobject-from-a-jsonarray-and-set-json-response

Answer 1

1. Create a class with field named message.

    public class Message {
   
        private String message;
   
        public String getMessage() {
            return message;
        }
   
        public void setMessage(String message) {
            this.message = message;
        }
   
   
    }
   

2. Then, in your above method,

    Message m = new Message();
   
    if(activation.getTemp() > 38) {
        m.setMessage("not cleared);
        return ResponseEntity.ok().body(m);
   
    }
    else{
        m.setMessage("cleared");
        return ResponseEntity.status.ok().body(m);
    }