java - gson 转泛型pojo

• gson 提供方法 TypeToken<?> getParameterized(Type rawType, Type... typeArguments) 进行泛型转化:
  • final Class<? super T> rawType; 基类信息
  • final Type type; 底层反射实例

  public static void main(String[] args) {
  
  	Map<String, Object> data1 = new HashMap<>();
  	data1.put("id", 11L);
  	data1.put("name", "dl");
  	data1.put("desc", "for test");
  
  	Map<String, Object> data2 = new HashMap<>();
  	data2.put("id", 112L);
  	data2.put("name", "dl2");
  	data2.put("desc", "for test2");
  
  	List<Map<String, Object>> dataList = new ArrayList<>();
  	dataList.add(data1);
  	dataList.add(data2);
  
  	Type type = TypeToken.getParameterized(List.class, Data.class).getType();
  	String json = new Gson().toJson(dataList);
  	List<Data> datas = new Gson().fromJson(json, type);
  	System.out.println(datas.toString());
  
  }
  @lombok.Data
  private static class Data {
  	private Long id;
  	private String name;
  	private String desc;
  }