text: Q:
  
  Best way to use Json object from @requestBody in controller instead of mapping to POJO
  
  Usually we map object from @RequestBody into some POJO at controller. In order to map into POJO we should know the fields from the @RequestBody object. So, my question is what could be the best way to use this object inside controller IF YOU DON'T KNOW THE FIELDS INSIDE REQUESTBODY.
  Is it like?
  @RequestMapping(value = "/students", method = RequestMethod.POST, consumes = "application/json")
  public @ResponseBody Student getStudent(@RequestBody String json) {
        // then parse the json string into object...
  } 
  
  Please share some innovative ideas. Thanks in advance.
  
  A:
  
  Updated Answer
  Based on the updated description of the question and if you are already using Jackson then following code will give you a Map of the json string.
  ObjectMapper mapper = new ObjectMapper();
  Map<String,Object> map = mapper.readValue(json, Map.class);
  
  Note: I have created a new instance of ObjectMapper, you can use the ObjectMapper bean if you have already defined one for your application.
  
  