list转json Gson中list转json

List<String> list = new ArrayList<String>();
list.add("abc");
list.add("123");
JSONArray jsonArray = JSONArray.fromObject(list);
System.out.println(jsonArray.toString());

Gson gson = new Gson();
List<Person> persons = new ArrayList<Person>();
for (int i = 0; i < 10; i++) {
     Person p = new Person();
     p.setName("name" + i);
     p.setAge(i * 5);
     persons.add(p);
}
String str = gson.toJson(persons);