Latest 0.4.0
Homepage https://github.com/mylcode/MCJSONKit
License MIT
Platforms ios 8.0, osx 10.9, requires ARC
Dependencies MCFoundation
Authors

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  • 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

目录

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

水平有限,不定期更新

  • 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,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,保持属性的默认值
  • 过滤类型不匹配的情况,例如类型为NSArray,但是JSON数据为字符串的情况
  • 代码覆盖率100
  • 待完善

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:

JSON Objective-C
null [nil]
true and false [NSNumber] or [BOOL]
Number [NSNumber] or [NSDate]
String [NSString]
Array [NSArray]
Object [NSDictionary]

NSJSONReadingOptions

NSJSONReadingMutableContainers  // 返回可变容器,NSMutableDictionary或NSMutableArray
NSJSONReadingMutableLeaves          // 不仅返回的最外层是可变的, 内部的子数值或字典也是可变对象
NSJSONReadingAllowFragments     // 返回允许JSON字符串最外层既不是NSArray也不是NSDictionary,但必须是有效的JSON Fragment.可以是例如 "10"

NSJSONWritingOptions

NSJSONWritingPrettyPrinted = (1UL << 0) //是将生成的json数据格式化输出,这样可读性高,不设置则输出的json字符串就是一整行。
NSJSONWritingSortedKeys //输出的json字符串就是一整行

如何使用

MCJSONKit is available through CocoaPods. To install
it, simply add the following line to your Podfile:

pod "MCJSONKit"
#import <MCJSONKit/MCJSONKit.h>

或者导入MJJSONKit文件夹到你的项目

#import "MCJSONKit.h"

Examples【示例】

创建基础模型YourBaseModel并封装【推荐】

使用时再封装一层,方便以后迁移
示例:iOSExample->Weibo->Models->WeiboModel.h(包含MJExtension的实现方式作为对比)
#import <MCJSONKit/MCJSONKit.h>

//示例基础模型
@interface YourBaseJSONModel : 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 *)arrayOfModelsFromKeyValues:(id)keyValues;

/**
 允许的属性集合,配置后则ignoreSet失效
 */
- (NSSet *)allowedPropertyNames;

/**
 忽略的属性集合
 */
- (NSSet *)ignoreSet;

/**
 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;
- (NSDictionary *)toDictionary;
- (NSString *)toJSONString;

@end

#import "YourBaseModel.h"

#import "NSObject+MCJSONKit.h"
#import "MJExtension.h"

@implementation YourBaseModel

+ (void)load {
    //格式化输出JSON字符串,默认为NO
    [self setPrettyPrinted:YES];
}

- (void)setCreated_at:(NSString *)created_at {
    NSDateFormatter *dateFmt = [NSDateFormatter new];
    dateFmt.dateFormat = @"EEE MMM d HH:mm:ss Z yyyy";
    dateFmt.locale = [NSLocale localeWithLocaleIdentifier:@"en-US"];

    NSDate *date = [dateFmt dateFromString:created_at];
    _created_at = @(date.timeIntervalSince1970).stringValue;
}

#pragma mark - 二次封装JSONKit

+ (instancetype)jsonObjectFromData:(id)data {
    return [self mc_objectFromKeyValues:data];
}

+ (NSArray *)arrayOfModelsFromKeyValues:(id)keyValues {
    return [self mc_arrayOfModelsFromKeyValues:keyValues];
}

- (NSSet *)allowedPropertyNames {
    return nil;
}

- (NSDictionary *)keyMappingDictionary {
    return nil;
}

- (NSDictionary *)typeMappingDictionary {
    return nil;
}

- (NSSet *)ignoreSet {
    return nil;
}

- (NSDictionary *)toDictionary {
    return [self mc_toDictionary];
}

- (NSString *)toJSONString {
    return [self mc_JSONString];
}

#pragma mark JSONCoreConfig

- (NSSet *)mc_allowedPropertiesSet {
    return [self allowedPropertyNames];
}

- (NSDictionary *)mc_keyMappingDictionary {
    return [self keyMappingDictionary];
}

- (NSDictionary *)mc_typeMappingDictionary {
    return [self typeMappingDictionary];
}

- (NSSet *)mc_ignorePropertiesSet {
    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;
@end
CountryModel *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<ProductModel *> *products;
@end

Model name – JSON key mapping【属性和字典的key不同、多级映射】

@implementation ProductModel
- (NSDictionary *)keyMappingDictionary {
    return @{MCProperty(productID):@"id"};
} 
@end
@implementation OrderModel
- (NSDictionary *)keyMappingDictionary {
    return @{MCProperty(status):@"status.code"};
} 
@end

Model contains array model【包含模型数组】

//模型中有个数组属性,数组元素映射为其他模型
- (NSDictionary *)typeMappingDictionary {
    return @{MCProperty(products):[ProductModel class]};
}

解析速度对比

mock数据

100次循环解析 平均耗时
MCJSONKit 0.415s
MJExtension 0.626s

TODO

  • [x] 解析速度对比分析
  • [x] 复杂JSON解析测试
  • [x] 全面覆盖测试,找出BUG

License

MCJSONKit is available under the MIT license. See the LICENSE file for more info.

Latest podspec

{
    "name": "MCJSONKit",
    "version": "0.4.0",
    "platforms": {
        "ios": "8.0",
        "osx": "10.9"
    },
    "summary": "A fast and convenient conversion between JSON and model",
    "description": "A fast and convenient conversion between JSON and model.Magical Data Modeling Framework for JSON - allows rapid creation of smart data models.",
    "homepage": "https://github.com/mylcode/MCJSONKit",
    "license": "MIT",
    "authors": {
        "mylcode": "[email protected]"
    },
    "source": {
        "git": "https://github.com/mylcode/MCJSONKit.git",
        "tag": "0.4.0"
    },
    "source_files": "MCJSONKit/Classes/**/*",
    "requires_arc": true,
    "dependencies": {
        "MCFoundation": [
            "~> 0.1.0"
        ]
    }
}

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