阶段53.微服务项目【学成在线】_day03CMS页面管理开发_16异常处理可预知异常处理自定义异常类型和抛出类

public class CustomException extends RuntimeException {
    ResultCode resultCode;

    public  CustomException(ResultCode resultCode){
        this.resultCode=resultCode;
    }

    public ResultCode getResultCode() {
        return resultCode;
    }
}

 public CmsPageResult add(CmsPage cmsPage){
        //校验页面名称、站点Id、页面WebPath的唯一性
        CmsPage cmsPage1=cmsPageRepository.findByPageNameAndSiteIdAndPageWebPath(cmsPage.getPageName(),cmsPage.getSiteId(),cmsPage.getPageWebPath());
        if(cmsPage1==null){
           throw new CustomException(CommonCode.FAIL);
        }
        cmsPage.setPageId(null);//设置设置为null 让mongoDB自动去生成，
        cmsPageRepository.save(cmsPage);
        return new CmsPageResult(CommonCode.SUCCESS,cmsPage);
        //return new CmsPageResult(CommonCode.FAIL,null);
    }

public class ExceptionCast {
    public static void cast(ResultCode resultCode){
        throw new CustomException(resultCode);
    }
}

if(cmsPage1==null){
//throw new CustomException(CommonCode.FAIL);
ExceptionCast.cast(CommonCode.FAIL);
}

@ControllerAdvice
public class ExceptionCatch {
    //捕获CustomException此类异常
    @ExceptionHandler(CustomException.class)
    public ResponseResult customException(CustomException customException){
        ResultCode resultCode=customException.getResultCode();
        return new ResponseResult(resultCode);
    }
}

@ControllerAdvice
public class ExceptionCatch {
private static final Logger LOGGER= LoggerFactory.getLogger(ExceptionCatch.class);
//捕获CustomException此类异常
@ExceptionHandler(CustomException.class)
public ResponseResult customException(CustomException customException){
//获取异常信息，日志记录异常
LOGGER.error("catch exception:{}",customException.getMessage());
        ResultCode resultCode=customException.getResultCode();
return new ResponseResult(resultCode);
    }
}