将对象以json格式写入到文件中

Posted 2022-12-21 jonalin

将 list 对象以json格式写入到文件中




try 
      ObjectMapper mapper = new ObjectMapper();
      String value = mapper.writeValueAsString(list);
      OutputStream out =new FileOutputStream("D:/file/oms.json");
      byte[] b=value.getBytes();
      for(int i=0;i<b.length;i++)
          out.write(b[i]);
      
      out.close();
 catch (IOException e) 
  logger.info("序列化失败......");
  e.printStackTrace();

结果如下所示：

["id":"000000151","length":22.2,
"id":"000000161","length":23.37,
"id":"000000160","length":23.37
]