一个Objective-C类扩展，您可以使用它轻松地将您的对象映射到JSON字符串以及从JSON解析回对象。
获取 APJSONMapping 的一种最简单的方法是通过 CocoaPods 安装它
target 'MyApp' do
pod 'APJSONMapping', '~> 1.0'
end
当框架被安装后，只需将其导入，以向现有类添加适当的功能
@import APJSONMapping;
@interface MyCustomClass : NSObject
// ...
@end为了让您的对象能够被映射到（并从）JSON，您必须描述它的映射规则
@import Foundation;
@import APJSONMapping;
//
// Here is interface
@interface MyCustomClass : NSObject
@property (nonatomic, strong) NSNumber *someNumber;
@property (nonatomic, strong) NSString *someString;
+ (Class)someArrayOfRelatingObjectsType;
@end
//
// And here is implementation
@implementation MyCustomClass
+ (NSMutableDictionary *)ap_objectMapping {
NSMutableDictionary * mapping = [super ap_objectMapping];
if (mapping) {
NSDictionary * objectMapping = @{ @"someNumber": @"some_number",
@"someString": @"some_string"};
[mapping addEntriesFromDictionary:objectMapping];
}
return mapping;
}
@end由于您已经描述了映射，现在您可以将对象映射到JSON并解析回来
MyCustomClass *myObject = [[MyCustomClass alloc] init];
myObject.someNumber = @112;
myObject.someString = @"testString";
NSString *json = [myObject ap_mapToJSONString]; // { "some_number": 112, "some_string": "testString" }
MyCustomClass *anotherObject = [[MyCustomClass alloc] initWithJSONString_ap:json];