How to get spesific error instead of Internal Service Error


I am getting Internal Server Error on postman even though I am throwing custom exception from my code exception. I want to see the exception having valid error message and error code, what I am throwing. It will be a great help if anyone of you can help me on this point. Like how I can get better error message. Adding below code snap. Thanks in advance

@Service public class FetchActionImpl implements FetchAction { private static Logger log = LoggerFactory.getLogger(FetchActionImpl.class); @Autowired FetchActionServiceImpl fetchActionService;// = new FetchActionServiceImpl(); @Override public FetchResponse fetchActionRequest(String caseId) throws BBWException,Exception{ //String resp =""; log.info("fetchaction Request: {}",ApplicationConstants.LOG_ENTRY_MESSAGE); log.info("The caseId received from BRASS:\n {}",caseId); FetchResponse resp = null; try{ if(true) { throw new BBWException("500","Test"); } resp = fetchActionService.fetchIt(caseId); log.debug("fetchaction Response: {}",resp.toString()); } catch (BBWException be) { throw be; } catch (Exception e) { throw new BBWException("500",e.getMessage()); } return resp; } } @Api @Path("/fetch_service") public interface FetchAction { @GET @Path("/fetchaction/caseid/{caseid}") @Produces({MediaType.APPLICATION_JSON}) //@Consumes({MediaType.TEXT_XML}) @ApiOperation( value = "Respond BRASS Request", notes = "Returns a XML object " ) @ApiResponses( value = { @ApiResponse(code = 404, message = "Service not available"), @ApiResponse(code = 500, message = "Unexpected Runtime error") }) public FetchResponse fetchActionRequest(@PathParam("caseid") String caseid) throws BBWException, Exception; }` public class BBWException extends Exception { private static final long serialVersionUID = -7987978270260338068L; private String errorCode; private String errorMessage; public BBWException(String errorCode, String errorMessage) { super(errorMessage); this.errorCode = errorCode; this.errorMessage = errorMessage; } public String getErrorCode() { return errorCode; } public void setErrorCode(String errorCode) { this.errorCode = errorCode; } public String getErrorMessage() { return errorMessage; } public void setErrorMessage(String errorMessage) { this.errorMessage = errorMessage; } @Override public String toString() { return (this.errorCode + " " + this.errorMessage); }



Each time the (uncaught) exception is throw, SpringBoot returns Http-500 Internal Server Error. There are many ways of handling exceptions in Spring.

Let's say I have my controller and I implicitly throw an exception.

@RestController public class HelloWorldController { @GetMapping("/hello-world") public String helloWorld() { throw new MyCustomException("I just can't say hello!"); } }

It's the same as yours - you can specify anything in the exception.


One of the way of handling it, is to create a class with @ControllerAdvice annotation.

@ControllerAdvice public class GlobalExceptionHandler { private static final Logger LOGGER = LoggerFactory.getLogger(GlobalExceptionHandler.class); @ExceptionHandler(MyCustomException.class) public ResponseEntity<String> handlyMyCustomException(MyCustomException e) { logger.error("error occurred {}", e); return new ResponseEntity<>("Something happened: " + e.getMessage(), HttpStatus.I_AM_A_TEAPOT); } }

This way you are able to catch the exception of your choice (globally) and return the message with the HTTP Response Status of your choice, not neccessarily I_AM_A_TEAPOT


@ExceptionHandler(MyCustomException.class) public ResponseEntity<String> handlyMyCustomException(MyCustomException e) { logger.error("error occurred {}", e); return new ResponseEntity<>("Something happened: " + e.getMessage(), HttpStatus.I_AM_A_TEAPOT); }

You could also create only method annotated with @ExceptionHandler in your controller class - but this is not global and is going to work only for this exact controller calls.

Result below:

<a href="https://i.stack.imgur.com/FZwxV.png" rel="nofollow"><img alt="That's the result" class="b-lazy" data-src="https://i.stack.imgur.com/FZwxV.png" data-original="https://i.stack.imgur.com/FZwxV.png" src="https://etrip.eimg.top/images/2019/05/07/timg.gif" /></a>


Another way of dealing with exceptions is to create your own error .html files. If you place a file in resources/static/error/500.html it should be returned when the Http-500 Internal Server Error is thrown.


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