fastjson使用-string-json-数组-list-object

//Object转json

JSONObject j1 = (JSONObject)JSONObject.toJSON(man1);

 //json转Object

 Man man3 = JSONObject.parseObject(j2.toJSONString(), Man.class);

 String aaa = "{\"name\":\"张三\",\"id\":\"1\"}";

 //String转JSONObject

  JSONObject j1 = JSONObject.parseObject(aaa);

 //JSONObject转String

  String bbb = j1.toJSONString(); 

 String aaa = "[{\"name\":\"张三\",\"id\":\"1\"},{\"name\":\"李四\",\"id\":\"2\"}]";

 //String转jsonArray

  JSONArray jsArr = JSONObject.parseArray(aaa);

 // jsonArray转String

  String bbb = jsArr.toJSONString();
  
 // list转jsonArray

 JSONArray array = JSONArray.parseArray(JSONObject.toJSONString(mans));

 // jsonArray转list

  List<Man> list = JSONObject.parseArray(js2.toJSONString(), Man.class);