asyncresttemplate - 我需要从 asyncresttemplate 的删除函数中获取 ListenableFutureCallback 的值

Question

当我使用 AsyncRestTemplate 的删除功能时，我从 ListenableFutureCallback 获取对象时遇到问题。这是我的源代码：

    ListenableFutureCallback<Object> callbackDelete = new ListenableFutureCallback<Object>() {
                @Override
                public void onFailure(Throwable ex) {
                    logger.error("Error processing the delete request: " + ex.getMessage());
                }

                @Override
                public void onSuccess(Object result) {
                    System.out.println("Async Delete Success : " + result.toString() );
                    logger.debug("The request has been processed successfully");

                }
            };


    ListenableFuture<?> response = asyncRestTemplate.delete(DELETE_URL + "/" + id);
    response.addCallback(callbackDelete);

当我执行 result.toString() 时，结果始终为空。

谢谢