Java-将bufferedimage转换为byte []而不写入磁盘 [英] Java- Convert bufferedimage to byte[] without writing to disk

问题描述

我正在尝试使用java在套接字上发送多个图像，但我需要一种更快的方法将图像转换为字节数组，以便我可以发送它们。我尝试了以下代码，但它向我的C：\驱动器写了大约10,000张图像。有没有办法在不写入磁盘的情况下进行此转换？谢谢！

I'm trying to send multiple images over a socket using java but I need a faster way to convert the images to a byte array so I can send them. I tried the following code but it wrote about 10,000 images to my C:\ drive. Is there a way to make this conversion without writing to disk? Thanks!

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

                    //ImageIO.setUseCache(false);
                    ImageIO.write(bi.getImage(), "jpg", outputStream);

                    byte[] imageBytes = outputStream.toByteArray();

推荐答案

这应该有效：

byte[] imageBytes = ((DataBufferByte) bufferedImage.getData().getDataBuffer()).getData();

这篇关于Java-将bufferedimage转换为byte []而不写入磁盘的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！