【java】java 读写文件

场景：JDK8  将上传的文件，保存到服务器

Java读写文件操作：

MultipartFile file

InputStream inputStream = file.getInputStream();

private void saveOldFile(String uid,String fileName,InputStream inputStream){
        String filePath = getFilePath() + "/" + uid +fileName;
        BufferedReader reader = null;
        BufferedWriter writer = null;
        try {
            File file = new File(filePath);
            reader = new BufferedReader(new InputStreamReader(inputStream));
            writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file)));
 
            String lineText = null;
            while ((lineText = reader.readLine()) != null){
                writer.write(lineText+FILE_CONTENT_SPLIT_MARK);
 
            }
 
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                writer.close();
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
 
        }
    }