Spring unified exception handling framework

RestControllerAdvice

@RestControllerAdvice Spring Framework is a new feature in 4.3, which is a combination of notes @ControllerAdvice + @ResponseBody. So @RestControllerAdvice can help us to use RestfulApi handle exceptions by a cross-point @ExceptionHandler.

General Exceptions Exception

@RestControllerAdvice
public class MyExceptionTranslator {

  @ExceptionHandler(Exception.class)
  @ResponseStatus(HttpStatus.OK)
  public String handleNotFoundException(CustomNotFoundException ex) {
    return ex.getMessage();
  }
}
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Custom exception handling

Custom exception class

public class CustomNotFoundException extends RuntimeException{
  public CustomNotFoundException(String msg) {
    super(msg);
  }
}
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Exception handling framework

@RestControllerAdvice
public class MyExceptionTranslator {

  @ExceptionHandler(Exception.class)
  @ResponseStatus(HttpStatus.OK)
  public String handleNotFoundException(CustomNotFoundException ex) {
    return ex.getMessage();
  }
  
  //自定义的异常处理
  @ExceptionHandler(CustomNotFoundException.class)
  @ResponseStatus(HttpStatus.OK)
  public ResponseMsg handleNotFoundException(CustomNotFoundException ex) {
    ResponseMsg responseMsg = new ResponseMsg(ex.getMessage());
    return responseMsg;
  }
}
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Reproduced in: https: //juejin.im/post/5d0b5ed8f265da1b80204c42