阿里云图片压缩上传代码

1.页面端

<form action="mem/upload" method="post" enctype="multipart/form-data" onsubmit="return checkForm(this);">

                <input type="hidden" name="flag" value="3"/><input type="hidden" name="memNo" value="${mem.memNo}"/><input type="hidden" name="authSt" value="${mem.idCardAuth}"/>

                <c:if test="${mem.idCardAuth==0}"><input type="file" name="authFile"/><input type="submit" value="上传"/></c:if>

                <c:if test="${mem.idCardAuth!=0}"><input type="file" name="authFile"/><input type="submit" value="重新上传"/></c:if> 

                </form>

2.控制器

@RequestMapping(value="upload",method=RequestMethod.POST)

    public String upload(DefaultMultipartHttpServletRequest multipartRequest,@RequestParam int memNo, @RequestParam int flag,@RequestParam int authSt, HttpServletResponse response){

        if (multipartRequest != null) {  

            memberService.uploadMemPic(multipartRequest,memNo, flag,authSt);

        }  

        //uploadService.json_encode(response, list);  

        //return "redirect:/pic/upload/"+carNo;

        return "redirect:/mem/detail/"+memNo;

    }

3.Service层方法

/**

     * 

     * @param multipartRequest

     * @param memNo

     * @param picKey

     * @param flag 1：：本人照片，3：身份证正面照，4:身份证背面，5：驾照照片

     * @param authSt 0：未上传

     */

    public void uploadMemPic(DefaultMultipartHttpServletRequest multipartRequest, int memNo, int flag, int authSt) {

        Map<String,Object> map = new HashMap<String,Object>();

        map.put("memNo", memNo);

        map.put("flag", flag);

        

        Map<String,Object> memPath = memberMapper.getMemBasePath(map);

        String basePath = (String)memPath.get("basePath");

        String oldPicKey = (String)memPath.get("picKey");

        if(authSt != 0 && StringUtils.hasText(oldPicKey)){

            OSSUtils.deleteOSSObjectAuth(oldPicKey);//删除之前的图片

        }

        

        MultipartFile multifile = multipartRequest.getFile("authFile");

        String picName = multifile.getOriginalFilename();

        String extName = picName.substring(picName.lastIndexOf("."));

        String newPicName = FILE_NAME_MAPING.get(flag) + extName;

        

        String picKey = "mem/" + basePath + newPicName;

        map.put("picKey", picKey);

        memberMapper.updateAuth(map);//更新数据库表

        try {

            

//            OSSUtils.uploadInputStreamAuth(picKey, multifile);

            //压缩身份证和驾照图片， 140918 

            InputStream input = null;

            input = multifile.getInputStream();

            //Image image = ImageIO.read(input);

            BufferedImage  bufImg = ImageIO.read(input);//把图片读入到内存中

　　　　　　　　//压缩代码
　　　　　　　　bufImg = Thumbnails.of(bufImg).size(bufImg.getWidth(), bufImg.getHeight()).outputQuality(0.9).asBufferedImage();

            OSSUtils.uploadInputStreamAuth(picKey, bufImg);

            

        } catch (Exception e) {

            logger.error("",e);

        }

    }

4.OSSUtils工具类

public static boolean uploadInputStreamAuth(String key, BufferedImage image) throws Exception{

        boolean errorCode = false;

        ObjectMetadata objectMeta = new ObjectMetadata();

        objectMeta.setContentType("image/*");//在metadata中标记文件类型

        

//        InputStream input = multifile.getInputStream();

//        InputStream inputTmp = multifile.getInputStream();

        

        //--------------------

        //转成inputStream

        ByteArrayOutputStream bos = new ByteArrayOutputStream();//存储图片文件byte数组

        ImageOutputStream ios = ImageIO.createImageOutputStream(bos); 

        ImageIO.write(image, "jpg", ios); //图片写入到 ImageOutputStream

        

        InputStream input = new ByteArrayInputStream(bos.toByteArray());

        InputStream inputTmp = new ByteArrayInputStream(bos.toByteArray());

        //--------------------

        

        try {

            objectMeta.setContentLength(input.available());

            //校验文件MD5值

            PutObjectResult    res = client.putObject(BUCKET_AUTH, key, input, objectMeta);

            String checkMD5 = res.getETag();

            String verifyCode = getFileInputStreamMD5(inputTmp);

            if(verifyCode.equalsIgnoreCase(checkMD5) == true){

                logger.info("文件上传成功：{}",key);

                errorCode = true;

            }else{

                logger.error("文件上传失败：{}",key);

            }

        } catch (Exception e) {

            logger.error("",e);

        }finally{

            if(inputTmp != null){

                inputTmp.close();

            }

        }

        return errorCode;

    }