springboot捕获全局异常实现过程

public class exception {
    public static void main(String[] args) {
        exception01();
    }
    public static void exception01(){
        int i =1/0;
    }
}

 @GetMapping("exception")
 public R exception(){
   throw new RuntimeException("运行异常");
}

@RestControllerAdvice
@Slf4j
public class MyExceptionHandler {
    @ExceptionHandler(value = Exception.class)
    public String exceptionHandler(Exception e){
        log.error("未知异常！原因是:"+e.getMessage());
        return "未知错误！！！";
    }
 }

@Getter
@AllArgsConstructor
public enum RCode {

    SUCCESS(0,"操作成功!"),
    fail(1,"操作失败!"),
    AUTH_ERROR(40411,"用户名或密码不存在！"),
    NO_AUTH_ERROR(40412,"无权访问！"),
    SYS_VALID_ERROR(501,"参数校验错误"),
    SYS_EXCEPTION(2,"模拟异常"),
    INVALID_TOKEN(40410,"Token无效，您无权访问该接口"),
;

    private Integer code;
    private String msg;

}

@Getter
public class CustomException extends RuntimeException{
    private RCode rCode;

    public CustomException(RCode rCode) {
        this.rCode = rCode;
    }

    public CustomException(Throwable cause, RCode rCode) {
        super(cause);
        this.rCode = rCode;
    }
}

@RestControllerAdvice
@Slf4j
public class MyExceptionHandler {
    //捕获自定义异常
    @ExceptionHandler(value = CustomException.class)
    public R CustomerExceptionHandler(CustomException e){
         log.error("未知异常！原因是:"+e.getRCode().getMsg());
        return R.error(e.getRCode());
    }
 }