Example of how to handling exception in Spring Boot.
- Annotate Exception with
@ResponseStatus
@ResponseStatus(code = HttpStatus.INTERNAL_SERVER_ERROR, reason = "I don't know...")
public class MyException extends Exception {
public MyException(String message) {
super(message);
}
}
This will response HTML error page as screenshot below.
- Throw
ResponseStatusExceptionfrom Controller.
@GetMapping("/users/{id}")
public User findUser(@PathVariable Long id) throws MyException {
throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR, "I don't know this too...");
}
- Use
@ControllerAdviceas global exception handling.
@ExceptionHandler(MyException.class)
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
@ResponseBody
public String handleMyException(HttpServletRequest request, Throwable ex) {
return "I don't know anything...";
}
We can remove @ResponseBody if we use @RestControllerAdvice instead of @ControllerAdvice
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