java返回图片流

图片流"/>

java返回图片流

后端代码：

@RequestMapping(value = "read")

public void index(Model model, HttpServletRequest req,

HttpServletResponse resp, String attachmentId) {

byte [] bytes = null;

ServletOutputStream sos =null;// 将图像输出到Servlet输出流中。

try {

GetImageRes getImageRes = acctManager.getImageBytes(attachmentId);

bytes = getImageRes.getFilebyte();

ByteArrayInputStream in = new ByteArrayInputStream(bytes); //将b作为输入流；

BufferedImage image = ImageIO.read(in);

resp.setHeader("Pragma", "no-cache");

resp.setHeader("Cache-Control", "no-cache");

resp.setDateHeader("Expires", 0);

sos = resp.getOutputStream();// 将图像输出到Servlet输出流中。

ImageIO.write(image, "jpeg", sos);

} catch (IOException e) {

e.printStackTrace()