fastjson用法5

fastjson处理List和Map泛型

public class JSONDemo03 {

	public static void main(String[] args) {
		// 泛型List转化
		List<Course> list = new ArrayList<>();
		list.add(new Course(1, "语文"));
		list.add(new Course(2, "数学"));
		list.add(new Course(3, "英语"));

		JSONArray array = (JSONArray) JSON.toJSON(list);

		// JSONArray 带参构造需要List类型为List<Object> list

		JSONArray array2 = new JSONArray();
		array2.addAll(list);
		List<Course> list2 = JSON.parseObject(array.toJSONString(),
				new TypeReference<List<Course>>() {
				});

		System.out.println(array + "\n" + array2 + "\n" + list + "\n" + list2);

		System.out.println(list.equals(list2));

		// 泛型Map转化
		Map<String, Teacher> map1 = new HashMap<>();
		Teacher t1 = new Teacher();
		t1.setCourse(new Course());
		Teacher t2 = new Teacher();
		t2.setCourse(new Course());

		map1.put("t1", t1);
		map1.put("t2", t2);
		String json = JSON.toJSONString(map1);
		Map<String, Teacher> map2 = JSON.parseObject(json,
				new TypeReference<Map<String, Teacher>>() {
				});

		System.out.println(map2.get("t1").getCourse() + "\n"
				+ map2.get("t2").getCourse());

	}

}