/***  写* @param neirong* @param lujing*/public static void  byWenjianWriterwenzi(String neirong,String lujing){try {File file = new File(lujing);// 创建文件file.createNewFile();FileWriter out = new FileWriter(file);BufferedWriter bw = new BufferedWriter(out);String str = neirong;bw.write(str);bw.flush();bw.close();} catch (IOException e) {e.printStackTrace();}}/*** 读* @param lujing*/public static String byWenjianReadwenzi(String lujing){try {File file = new File(lujing);// 创建文件file.createNewFile();FileReader in = new FileReader(file);BufferedReader reader = new BufferedReader(in);String str1 = null;StringBuffer str2 = new StringBuffer();while((str1=reader.readLine()) != null) {str2.append(str1);}reader.close();return str2.toString();} catch (IOException e) {e.printStackTrace();return "";}}

借鉴的资料：https://developer.aliyun.com/article/513140