gson 的简单使用

生成Json字符串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);

json 转对象

Person person = gson.fromJson(str, Person.class);

json 转list 泛型：

List<Person> ps = gson.fromJson(str, new TypeToken<List<Person>>(){}.getType());for(int i = 0; i < ps.size() ; i++){     Person p = ps.get(i);     System.out.PRintln(p.toString());}