Swift KakaJSON 06.---Coding/归档/

KakaJSON可以只用一行代码将常用数据进行归档\解档

• 后面代码中会用到 file 文件路径

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

1. String

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

let string1 = "123"

// 将字符串写入文件
write(string1, to: file)

// 从文件中读取字符串
let string2 = read(String.self, from: file)
print(string2 ?? "")
// 123

2. Date

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

let date1 = Date(timeIntervalSince1970: 1565922866)

// 将字符串写入文件
write(date1, to: file)

// 从文件中读取Date
let date2 = read(Date.self, from: file)
print(date2 ?? Date())
// 2019-08-16 02:34:26 +0000

3. Array

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

let array1 = ["Jack", "Rose"]
// 将数组写入文件
write(array1, to: file)


// 从文件中读取数组
let array2 = read([String].self, from: file)
print(array2 ?? Array())
// ["Jack", "Rose"]

4. Model

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

struct Book: Convertible {
    var name: String = ""
    var price: Double = 0.0
}

struct Car: Convertible {
    var name: String = ""
    var price: Double = 0.0
}

struct Dog: Convertible {
    var name: String = ""
    var age: Int = 0
}

struct Person: Convertible {
    var name: String = "Jack"
    var car: Car? = Car(name: "Bently", price: 106.666)
    var books: [Book]? = [
        Book(name: "Fast C++", price: 666.6),
        Book(name: "Data Structure And Algorithm", price: 666.6),
    ]
    var dogs: [String: Dog]? = [
        "dog0": Dog(name: "Wang", age: 5),
        "dog1": Dog(name: "ErHa", age: 3),
    ]
}

// 将模型写入文件
write(Person(), to: file)


// 从文件中读取模型
let person = read(Person.self, from: file)
print(person ?? Person())
/*
Person(name: "Jack", car: Optional(KKJson.ViewController.(unknown context at $1022e8f0c).(unknown context at $1022e8fc4).Car(name: "Bently", price: 106.666)), books: Optional([KKJson.ViewController.(unknown context at $1022e8f0c).(unknown context at $1022e8f54).Book(name: "Fast C++", price: 666.6), KKJson.ViewController.(unknown context at $1022e8f0c).(unknown context at $1022e8f54).Book(name: "Data Structure And Algorithm", price: 666.6)]), dogs: Optional(["dog1": KKJson.ViewController.(unknown context at $1022e8f0c).(unknown context at $1022e9024).Dog(name: "ErHa", age: 3), "dog0": KKJson.ViewController.(unknown context at $1022e8f0c).(unknown context at $1022e9024).Dog(name: "Wang", age: 5)]))
*/

5.Model Array

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

struct Car: Convertible {
   var name: String = ""
   var price: Double = 0.0
}

let models1 = [
   Car(name: "BMW", price: 100.0),
   Car(name: "Audi", price: 70.0)
]
// 将模型数组写入文件
write(models1, to: file)


// 从文件中读取模型数组
let models2 = read([Car].self, from: file)
guard let models = models2 else {
   return
}
for car: Car in models {
   print(car)
}
/*
Car(name: "BMW", price: 100.0)
Car(name: "Audi", price: 70.0)
*/

6.Model Dictionary

// 文件路径（String或者URL都可以）
let file = "/Users/yfmac001/Desktop//test.json"

struct Car: Convertible {
    var name: String = ""
    var price: Double = 0.0
}

let models1 = [
    "car0": Car(name: "BMW", price: 100.0),
    "car1": Car(name: "Audi", price: 70.0)
]

// 将模型字典写入文件
write(models1, to: file)



// 从文件中读取模型字典
let models2 = read([String: Car].self, from: file)
guard let models = models2 else {
    return
}
for (key, value) in models {
    print("key:\(key)  value:\(value)")
}
/*
key:car1  value:Car(name: "Audi", price: 70.0)
key:car0  value:Car(name: "BMW", price: 100.0)
*/

Swift 字典转模型(KakaJSON) ---1.基本用法
Swift 字典转模型(KakaJSON) ---2.数据类型
Swift 字典转模型(KakaJSON) ---3.key处理
Swift 字典转模型(KakaJSON) ---4.动态模型
Swift KakaJSON 05.---模型转字典