json

1.json字符串转JavaBean

String msg2 = "{"type":123,"data":"123","+""currentTime":""+LocalDateTime.now()+""}";
rabbitMessage = JSONObject.parseObject(msg2, RabbitMessage.class);

SerializeWriter：相当于StringBuffer
JSONArray：相当于List<Object>
JSONObject：相当于Map<String, Object>
JSON反序列化没有真正数组，本质类型都是List<Object>

参考：https://www.w3cschool.cn/fastjson/fastjson-ex2.html