相关链接

https://github.com/kakaopensource/KakaJSON
https://github.com/ibireme/YYModel
https://www.cnblogs.com/mjios/p/11352776.html

1、为什么要混合使用

因为当swift的model如果嵌套使用OC的model时，使用KakaJson无法解析OC的model

2、调研

监听
复制代码Swift
// 有时候可能想在JSON转模型之前、之后做一些额外的操作
// KakaJSON会在JSON转模型之前调用模型的kj_willConvertToModel方法
// KakaJSON会在JSON转模型之后调用模型的kj_didConvertToModel方法
 
struct Car: Convertible {
    var name: String = ""
    var age: Int = 0
    
    mutating func kj_willConvertToModel(from json: [String: Any]) {
        print("Car - kj_willConvertToModel")
    }
    
    mutating func kj_didConvertToModel(from json: [String: Any]) {
        print("Car - kj_didConvertToModel")
    }
}
 
let name = "Benz"
let age = 100
let car = ["name": name, "age": age].kj.model(Car.self)
// Car - kj_willConvertToModel
// Car - kj_didConvertToModel
XCTAssert(car.name == name)
XCTAssert(car.age == age)
 
/*************************************************************/
 
// 同样也支持类
class Person: Convertible {
    var name: String = ""
    var age: Int = 0
    required init() {}
    
    func kj_willConvertToModel(from json: [String: Any]) {
        print("Person - kj_willConvertToModel")
    }
    
    func kj_didConvertToModel(from json: [String: Any]) {
        print("Person - kj_didConvertToModel")
    }
}
 
class Student: Person {
    var score: Int = 0
    
    override func kj_willConvertToModel(from json: [String: Any]) {
        // 如果有必要的话，可以调用super的实现
        super.kj_willConvertToModel(from: json)
        
        print("Student - kj_willConvertToModel")
    }
    
    override func kj_didConvertToModel(from json: [String: Any]) {
        // 如果有必要的话，可以调用super的实现
        super.kj_didConvertToModel(from: json)
        
        print("Student - kj_didConvertToModel")
    }
}
 
let name = "jack"
let age = 10
let score = 100
let student = ["name": name, "age": age, "score": score].kj.model(Student.self)
// Person - kj_willConvertToModel
// Student - kj_willConvertToModel
// Person - kj_didConvertToModel
// Student - kj_didConvertToModel
XCTAssert(student.name == name)
XCTAssert(student.age == age)
XCTAssert(student.score == score)

3、如何混合使用

故可以使用kj_willConvertToModel来操作混合预处理混合model解析

    /// swift model类中嵌套OC的类数据解析
    /// - Parameter json: 原始json
    func kj_willConvertToModel(from json: [String: Any]) {
        
        if let dic = json["dicKey"] as? [AnyHashable : Any] {
            self.feeds = OCModel.yy_model(with: dic)
        }
    }

4、举一反三

YYModel可以替换为手动解析以及MJExtension，and so on