File和MultipartFile的相互转换

File转MultipartFile

  private MultipartFile getMultipartFile(File file) {
        FileInputStream fileInputStream = null;
        MultipartFile multipartFile = null;
        try {
            fileInputStream = new FileInputStream(file);
            multipartFile = new MockMultipartFile(file.getName(), file.getName(),
                    ContentType.APPLICATION_OCTET_STREAM.toString(), fileInputStream);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return multipartFile;
    }

MultipartFile转 File

 public File getFile( MultipartFile multipartFile) {
        //文件上传前的名称
        String fileName = multipartFile.getOriginalFilename();
        File file = new File(fileName);
        OutputStream out = null;
        try{
            //获取文件流，以文件流的方式输出到新文件
            out = new FileOutputStream(file);
            byte[] ss = multipartFile.getBytes();
            for(int i = 0; i < ss.length; i++){
                out.write(ss[i]);
            }
        }catch(IOException e){
            e.printStackTrace();
        }finally {
            if (out != null){
                try {
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return file;
    }

标签：MultipartFile,转换,File,null,file,multipartFile,out
来源： https://www.cnblogs.com/first131/p/16473064.html