iOS下JSON字符串反序列化成对象，，在正式的项目中比较常见。如下几个常用开源库，可以根据个人喜好任选其一：
1.JSONModel:https://github.com/icanzilb/JSONModel
2.MJExtension:https://github.com/CoderMJLee/MJExtension
3.Mantle:https://github.com/Mantle/Mantle
其中，JSONModel对数组元素反序列化，需要定义一个跟数组元素Model的类名相同的@protocol
{ "order_id": 104, "total_price": 103.45, "products" : [{"id": "123","name": "Product #1","price": 12.95},{"id": "137","name": "Product #2","price": 82.95} ]}@protocol ProductModel@end@interface ProductModel : JSONModel@property (assign, nonatomic) int id;@property (strong, nonatomic) NSString* name;@property (assign, nonatomic) float price;@end@implementation ProductModel@end@interface OrderModel : JSONModel@property (assign, nonatomic) int order_id;@property (assign, nonatomic) float total_price;@property (strong, nonatomic) NSArray<ProductModel, ConvertOnDemand>* products;@end@implementation OrderModel@end
MJExtension号称“世界上转换速度最快、使用最简单方便的字典转模型框架”，有兴趣的可以看github下的具体说明。
如此锐气，二十后生有之，六旬男子则更多见。
