springboot实现文件上传功能

        最近在做文件上传功能，查找了很多资料，下面记录一下，以下是springboot代码片段java代码

        MultipartFile是spring类型，代表HTML中form data方式上传的文件，包含二进制数据+文件名称。

        Controller

    @PostMapping("/upload")
    public MessagePackage uploadImage(MultipartFile file) {

        recruitService.uploadImage(userId, userVO.getUserName(), file);

        return new MessagePackage<>("上传图片成功!");
    }

         Service

public String uploadImage(String userId, String userName, MultipartFile file) {

        FileOutputStream fileOutputStream = null;
        InputStream inputStream = null;


        String imageName = userName + getCurrentDate() + ".jpg";
        String finalFileName = IMG_URL + userId + File.separator + imageName;

        System.out.println(file.getOriginalFilename());

        File outFile = new File(finalFileName);
        if (outFile.getParentFile() != null || !outFile.getParentFile().isDirectory()) {
            // 创建父文件夹
            outFile.getParentFile().mkdirs();
        }

        try {
            fileOutputStream = new FileOutputStream(outFile);
            inputStream = file.getInputStream();
            IOUtils.copy(inputStream, fileOutputStream);
        } catch(IOException e) {
            log.error(e.getMessage());
        } finally {
            if (fileOutputStream != null) {
                try {
                    fileOutputStream.flush();
                    fileOutputStream.close();
                } catch (IOException e) {
                    log.error(e.getMessage());
                }
            }
        }

        String imagePath = finalFileName;

        return addUserImage(userId, imageName, imagePath);
    }