springboot 隐藏并代理远程文件

代码如下：

@GetMapping("getImage")
    public void getImage(HttpServletResponse response) throws IOException {
        String path = "你的图片网络地址";

        URL url = new URL(path);
        InputStream in = url.openStream();
        byte[] buff = new byte[in.available()];
        int bytesRead = 0;
        ByteArrayOutputStream bao = new ByteArrayOutputStream();
        while ((bytesRead = in.read(buff)) != -1) {
            bao.write(buff, 0, bytesRead);
        }
        in.close();
        byte[] data = bao.toByteArray();
        ServletOutputStream out = null;
        ByteArrayInputStream ips = new ByteArrayInputStream(data);
        try {
            out = response.getOutputStream();
            //读取文件流
            int len = 0;
            byte[] buffer = new byte[ips.available()];
            while ((len = ips.read(buffer)) != -1) {
                out.write(buffer, 0, len);
            }
            out.flush();
        } catch (Exception e) {
            logger.info("失败了");
        } finally {
            out.close();
            ips.close();
        }
    }

结束。