SpringBoot 動態更新 resources 目錄的文件

一、前言

 SpringBoot 打成 Jar 包形式運行后 ，resources 目錄下文件的讀取修改和 Spring 不太一樣，網上比較多的是關於讀取的方式，修改的幾乎沒有，終於在 stackoverflow 上找到了正確的打開方式。

二、 文件讀取

    public void read(){
        InputStream inputStream = null;
        BufferedReader bufferedReader = null;
        try {
            inputStream= getClass().getClassLoader().getResourceAsStream("sensitiveWords.dat");
            bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"));
            String txt;
            while ((txt = bufferedReader.readLine()) != null) {
                // do more
            }
        } catch (Exception e) {
            log.error("文件不存在", e);
        } finally {
            bufferedReader.close();
            inputStream.close();
        }
   }

三、 文件修改

    public void write(){
           File file = new ClassPathResource("sensitiveWords.dat").getFile();
           BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(file));
           bufferedWriter.write("data");
           bufferedWriter.flush();
           bufferedWriter.close();
   }