从c++获取的图片,返回的格式是abgr的数组,如何用java转为图片

Question

   byte[] src = roiAbgr.getByteArray(0,w * h * 4);
  BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_4BYTE_ABGR);

如何用BufferedImage这个类把src 转为jpg图片

Answer 1

代码如下，望采纳

    /**
     * 获取验证码图片
     * @return  jpg 
     */
    @RequestMapping(value = "/getCodeImage")
    public void getValidateCodeImage(HttpServletRequest request,HttpServletResponse response) throws IOException {

        JSONObject json = new JSONObject();
        PrintWriter out = null;
        out = response.getWriter();
        
        byte[] src = roiAbgr.getByteArray(0,w * h * 4);
        BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_4BYTE_ABGR);
        
        //临时图片路径
        File file = new File("d:\\image\\" + UUID.randomUUID().toString() + ".jpg");
        if(!(file.getParentFile().exists())){  //判断d:\image目录是否存在
            file.getParentFile().mkdir();
        }
        //输出到临时图像
        ImageIO.write(image, "jpg", file);//jpg可以换成你想要的图片格式
        this.file = file;
        json.put("validateCodeImage", file);

        if (null != out) {
            out.close();
        }
    }