springboot 获取响应值

@RestControllerAdvice
public class LocalDateTimeAdvice implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter methodParameter,
                                  MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass,
                                  ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
        return body;
    }

}