轻量JSON对象转换库JSONCore

项目介绍：

JSONCore

https://github.com/maintoco/JSONCore

A fast, convenient and nonintrusive conversion between JSON and model.

转换速度快、使用简单方便的字典转模型框架

水平有限，欢迎各位大牛批评指教

一直是拿来主义用的第三方库，总是发现一些不灵活或者不足、不适用的地方，所以自己心血来潮写一个轻量的JSON对象转换库.

目前为测试版，开题报告，可能还有很多问题，会持续更新优化.

不改变目标对象的属性类型

null值不做处理

过滤类型不匹配的情况，例如类型为NSArray，论文，但是JSON数据为字符串的情况

待完善

更新记录2016-12-24

移除类继承的使用方式

优化初始化方法

修复JSON数据输出不能正确解析keyPath的问题,并增加是否格式化输出的开关

2016-12-08

增加NSDate支持

修复类型不匹配的问题例如：属性定义为NSString但是JSON数据为Number

JavaScript Object Notation, or [JSON][], is a lightweight, text-based, serialization format for structured data that is used by many web-based services and API's. It is defined by [RFC 4627][].

JSON provides the following primitive types:

null

Boolean true and false

Number

String

Array

Object

These primitive types are mapped to the following Objective-C Foundation classes:

JSONObjective-C
null   [nil]  
true and false   [NSNumber] or [BOOL]  
Number   [NSNumber] or [NSDate]  
String   [NSString]  
Array   [NSArray]  
Object   [NSDictionary]  
如何使用导入JSONCore文件夹到你的项目#import 'NSObject+JSONCore.h'Examples【示例】创建基础模型YourBaseModel并封装【推荐】为了减少代码入侵，方便以后灵活迁移，可按以下方法封装 示例：iOSExample->Weibo->Models->WeiboModel.h（包含MJExtension的实现方式作为对比）//示例基础模型 @interface YourBaseModel : NSObject /** 通过字典创建模型 @param data 许可类型<NSData,NSDictionary,NSString> @return 新创建模型对象 */ + (instancetype)jsonObjectFromData:(id)data; + (NSArray *)arrayOfModelsFromDictionaries:(NSArray *)array; /** 允许的属性名 */ + (NSArray *)allowedPropertyNames; /** key关联字段 @return key:对象属性 value:keyPath */ + (NSDictionary *)keyMappingDictionary; /** 类型关联字典 @return key:对象属性 value:类型class */ + (NSDictionary *)typeMappingDictionary; /** 忽略,不做处理的属性 */ + (NSSet *)ignoreSet; - (NSDictionary *)toDictionary; - (NSString *)toJSONString; @end #import 'YourBaseModel.h' #import 'NSObject+JSONCore.h' #import 'MJExtension.h' @implementation YourBaseModel + (void)load { //格式化输出JSON数据 [self setPrettyPrinted:YES]; } #pragma mark - 封装JSONCore + (instancetype)jsonObjectFromData:(id)data { return [self co_objectFromKeyValues:data]; } + (NSArray *)arrayOfModelsFromDictionaries:(NSArray *)array { return [self co_arrayOfModelsFromDictionaries:array]; } + (NSArray *)allowedPropertyNames { return nil; } + (NSDictionary *)keyMappingDictionary { return nil; } + (NSDictionary *)typeMappingDictionary { return nil; } + (NSSet *)ignoreSet { return nil; } - (NSDictionary *)toDictionary { return [self co_toDictionary]; } - (NSString *)toJSONString { return [self co_toJSONString]; } #pragma mark JSONCoreConfig + (NSDictionary *)co_allowedPropertyNames { return nil; } + (NSDictionary *)co_keyMappingDictionary { return [self keyMappingDictionary]; } + (NSDictionary *)co_typeMappingDictionary { return [self typeMappingDictionary]; } + (NSSet *)co_ignoreDictionary { return [self ignoreSet]; } @end JSONString -> Model【简单模型】{ 'id': 10, 'country': 'Germany', 'dialCode': 49, 'isInEurope': true }@interface CountryModel : YourBaseModel @property (nonatomic) NSInteger id; @property (nonatomic) NSString *country; @property (nonatomic) NSString *dialCode; @property (nonatomic) BOOL isInEurope; @endCountryModel *country = [CountryModel jsonObjectFromData:jsonString];JSONString -> Model【模型嵌套】{ 'orderId': 104, 'totalPrice': 103.45, 'products': [ { 'id': 123, 'name': 'Product #1', 'price': 12.95 }, { 'id': 137, 'name': 'Product #2', 'price': 82.95 } ], 'status':{ 'code':1, 'msg':'订单已付款' } }@interface ProductModel : YourBaseModel @property (nonatomic) NSInteger productId; @property (nonatomic) NSString *name; @property (nonatomic) float price; @end @interface OrderModel : YourBaseModel @property (nonatomic) NSInteger orderId; @property (nonatomic) float totalPrice; @property (nonatomic, assign) int status; @property (nonatomic) NSArray *products; @endModel name - JSON key mapping【属性和字典的key不同、多级映射】@implementation ProductModel + (NSDictionary *)keyMappingDictionary { return @{@'productID',@'id'}; } @end@implementation OrderModel + (NSDictionary *)keyMappingDictionary { return @{@'status':@'status.code'}; } @endModel contains model【模型中数组的元素也是模型】//模型中有个数组属性，数组元素映射为其他模型 + (NSDictionary *)typeMappingDictionary { return @{@'products':[ProductModel class]}; }解析速度对比

测试数据

100次循环解析平均耗时
JSONCore   0.283s  
MJExtension   0.998s  
TODO

[已经完成] 解析速度对比分析

[ ] 复杂JSON解析测试

[ ] 全面覆盖测试，找出BUG