Convert HttpServletResponse

Question

Ich habe folgendes Exception JSon:

@ExceptionHandler(ValueNotAllowedException.class) 
void handleBadRequests(HttpServletResponse response, ValueNotAllowedException ex) throws IOException { 
    response.sendError(HttpStatus.BAD_REQUEST.value(), ex.getMessage()); 
} 

Antwort der Typ ist HTML. Wie leicht wie die Reaktion in smth konvertieren:

(Antwort von einem anderen Controller in Projekt Meine Antwort ähnlich sein sollte.)

{ 
    "timestamp": 1476462787425, 
    "status": 400, 
    "error": "Bad Request", 
    "exception": "org.springframework.http.converter.HttpMessageNotReadableException", 
    "message": "Could not read document: Start date should be before or equal end date\n at [Source: java.io.PushbackInputStream@47842b65; line: 23, column: 16] (through reference chain: com.instinctools.mailtracker.endpoints.dto.QueryFilterDTO[\"startDate\"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Start date should be before or equal end date\n at [Source: java.io.PushbackInputStream@47842b65; line: 23, column: 16] (through reference chain: com.instinctools.mailtracker.endpoints.dto.QueryFilterDTO[\"startDate\"])", 
    "path": "/statistics/clicks" 
} 

Answer 1

erstellen Basis Error Objekt (richtig kommentierte), das zurück zum UI.

class Error { 
    private String timestamp; 
    private Integer status; 
    private String error; 
    private String exception; 
    private String message; 
    private String path; 

    //constructors here, whatever 
..... 
} 

..then Ihre Exception mit etwas wie folgt ändern:

@ResponseStatus(HttpStatus.BAD_REQUEST) 
@ExceptionHandler(ValueNotAllowedException.class) 
@ResponseBody Error handleBadRequest(HttpServletRequest req, Exception ex) { 
    //Create and return your Error object here. 
    return new Error(/* populate with all the stuff you need here */); 
} 

hoffe, das hilft!