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How do you implement Specific Error Handling for a Spring MVC Controller?

Pragya Keshap answered on March 1, 2023 Popularity 4/10 Helpfulness 2/10

answer How do you implement Specific Error Handling for a Spring MVC Controller?

How do you implement Specific Error Handling for a Spring MVC Controller?

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@Controller
public class ExceptionHandlingController {

  // @RequestHandler methods
  ...
  
  // Exception handling methods
  
  // Convert a predefined exception to an HTTP Status code
  @ResponseStatus(value=HttpStatus.CONFLICT,
                  reason="Data integrity violation")  // 409
  @ExceptionHandler(DataIntegrityViolationException.class)
  public void conflict() {
    // Nothing to do
  }
  
  // Specify name of a specific view that will be used to display the error:
  @ExceptionHandler({SQLException.class,DataAccessException.class})
  public String databaseError() {
    // Nothing to do.  Returns the logical view name of an error page, passed
    // to the view-resolver(s) in usual way.
    // Note that the exception is NOT available to this view (it is not added
    // to the model) but see "Extending ExceptionHandlerExceptionResolver"
    // below.
    return "databaseError";
  }

  // Total control - setup a model and return the view name yourself. Or
  // consider subclassing ExceptionHandlerExceptionResolver (see below).
  @ExceptionHandler(Exception.class)
  public ModelAndView handleError(HttpServletRequest req, Exception ex) {
    logger.error("Request: " + req.getRequestURL() + " raised " + ex);

    ModelAndView mav = new ModelAndView();
    mav.addObject("exception", ex);
    mav.addObject("url", req.getRequestURL());
    mav.setViewName("error");
    return mav;
  }
}

Popularity 4/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: error-handling java spring-mvc

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Contributed on Mar 01 2023

Pragya Keshap

0 Answers Avg Quality 2/10

How do you implement Specific Error Handling for a Spring MVC Controller?

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