@H_403_0@ @H_403_0@ List<Person> list = new ArrayList<Person>(); list.add(new Person("张三","123")); list.add(new Person("张2三","sdf")); list.add(new Person("张3三","fd")); JSONArray json1 = JSONArray.fromObject(list); @H_403_0@ System.out.println(json1.toString());

Person pe = new Person("李四","lal");
JSONObject json3 = JSONObject.fromObject(pe);
System.out.println(json3.toString());

JSONArray.fromObject可以将list或者list<T>直接转换为JSON

JSONObject.fromObjec可以将一个对象直接转换为JSON