问题
I am getting Internal Server Error on postman even though I am throwing a custom exception from my code exception. I want to see the exception of having a 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 a 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);
}
}
回答1:
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.
First:
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
Second:
@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:
Third:
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.
来源:https://stackoverflow.com/questions/54328633/how-to-get-specific-error-instead-of-internal-server-error