Spring return ResponseBody ResponseEntity List JSONObject

Question

In controller I create json array  If I return List lt JSONObject gt  it is ok    RequestMapping value     method RequestMethod GET  produces MediaType APPLICATION JSON VALUE  public  ResponseBody List lt JSONObject gt  getAll         List lt Entity gt  entityList   entityManager findAll         List lt JSONObject gt  entities   new ArrayList lt JSONObject gt         for  Entity n   entityList            JSONObject entity   new JSONObject            entity put  id   n getId             entity put  address   n getAddress             entities add entity             return entities      but I need to return JSON array and HTTP status code    RequestMapping value     method RequestMethod GET  produces MediaType APPLICATION JSON VALUE  public  ResponseBody ResponseEntity lt List lt JSONObject gt  gt  getAll         List lt Entity gt  entityList   entityManager findAll         List lt JSONObject gt  entities   new ArrayList lt JSONObject gt         for  Entity n   entityList            JSONObject Entity   new JSONObject            entity put  id   n getId             entity put  address   n getAddress             entities add entity             return new ResponseEntity lt JSONObject gt  entities  HttpStatus OK      XXX     Eclipse see error in XXX line   Multiple markers at this line     - The constructor ResponseEntity lt JSONObject gt  List lt JSONObject gt   HttpStatus  is undefined     - Type mismatch  cannot convert from ResponseEntity lt JSONObject gt  to       ResponseEntity lt List lt JSONObject gt  gt      - Type mismatch  cannot convert from ResponseEntity lt JSONObject gt  to JSONObject   How can I return json http reply  There is my working code for returning one json object   http status code    RequestMapping value    address    method RequestMethod GET  produces MediaType APPLICATION JSON VALUE  public  ResponseBody ResponseEntity lt JSONObject gt  getEntity  PathVariable  address   int address        Entity n   entityManager findByAddress address       JSONObject o   new JSONObject        o put  id   n getId         o put  address   n getAddress         return new ResponseEntity lt JSONObject gt  o  HttpStatus OK

User · Answer

Instead of  return new ResponseEntity lt JSONObject gt  entities  HttpStatus OK     try  return new ResponseEntity lt List lt JSONObject gt  gt  entities  HttpStatus OK

User · Answer

Personally  I prefer changing the method signature to   public ResponseEntity lt   gt    This gives the advantage of possibly returning an error message as single item for services which  when ok  return a list of items    When returning I don t use any type  which is unused in this case anyway    return new ResponseEntity lt  gt  entities  HttpStatus OK

User · Answer

I am late for this but i want put some more solution relevant to this     GetMapping public ResponseEntity lt List lt JSONObject gt  gt  getRole         return ResponseEntity ok service getRole

User · Answer

I have no idea why the other answers didn t work for me  error 500  but this works   GetMapping     public String getAll         List lt Entity gt  entityList   entityManager findAll        List lt JSONObject gt  entities   new ArrayList lt JSONObject gt         for  Entity n   entityList            JSONObject Entity   new JSONObject            entity put  id   n getId             entity put  address   n getAddress             entities add entity             return entities toString

User · Answer

Now I return Object  I don t know better solution  but it works    RequestMapping value     method RequestMethod GET  produces MediaType APPLICATION JSON VALUE  public  ResponseBody ResponseEntity lt Object gt  getAll         List lt Entity gt  entityList   entityManager findAll         List lt JSONObject gt  entities   new ArrayList lt JSONObject gt         for  Entity n   entityList            JSONObject Entity   new JSONObject            entity put  id   n getId             entity put  address   n getAddress             entities add entity             return new ResponseEntity lt Object gt  entities  HttpStatus OK

[java] Spring: return @ResponseBody "ResponseEntity<List<JSONObject>>"

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