如何在不捕获异常的情况下处理RestTemplate中的响应代码？[Spring Boot]

public class CustomResponseErrorHandler implements ResponseErrorHandler {

    @Override
    public boolean hasError(ClientHttpResponse response) throws IOException {
        // 判断响应是否有错误
        HttpStatus statusCode = response.getStatusCode();
        return !statusCode.is2xxSuccessful();
    }

    @Override
    public void handleError(ClientHttpResponse response) throws IOException {
        // 处理响应错误
        HttpStatus statusCode = response.getStatusCode();
        // 根据不同的响应状态码进行相应的处理逻辑
        if (statusCode == HttpStatus.NOT_FOUND) {
            // 处理404错误
            // ...
        } else if (statusCode == HttpStatus.INTERNAL_SERVER_ERROR) {
            // 处理500错误
            // ...
        } else {
            // 处理其他错误
            // ...
        }
    }
}

RestTemplate restTemplate = new RestTemplate();
restTemplate.setErrorHandler(new CustomResponseErrorHandler());