字节流-FileOutputStream、FileInputStream-读写

向磁盘写入文件：

以utf-8编码写入文件：
        FileOutputStream fos = new FileOutputStream("D:/"+fileName+".json");//文件不存在会自动创建
        OutputStreamWriter osw = new OutputStreamWriter(fos, StandardCharsets.UTF_8);
        osw.write(beans);//string类型的对象
        osw.flush();

读取写入的文件：

FileInputStream fis = new FileInputStream("test.txt");   
  InputStreamReader isr = new InputStreamReader(fis, "UTF-8");   
  BufferedReader br = new BufferedReader(isr);   
  String line = null;   
  while ((line = br.readLine()) != null) {   
      FileContent += line;   
      FileContent += "\r\n"; // 补上换行符   
  }

 

来源：CSDN

作者：不努力，谁会可怜你？

链接：https://blog.csdn.net/qq_32603969/article/details/104020324