數(shù)據(jù)編碼為JSON格式
warning:內容來自Perfect官網：https://www.perfect.org/docs/JSON_zh_CN.html
你可以將一下數(shù)據(jù)類型直接轉換為JSON字符串：
- String
- Int/UInt
- Double
- Bool
- Array任意類型的數(shù)組
- Dictionary以字符串為關鍵詞的字典
- Optional 可選類型
- 從JSONConvertObject對象繼承而來的定制類型
1.編碼
let scoreArray: [String:Any] = ["第一名": 300, "第二名": 230.45, "第三名": 150]
let encoded = try scoreArray.jsonEncodedString()
// 結果
{"第二名":230.45,"第一名":300,"第三名":150}
2.解碼JSON數(shù)據(jù)
let encoded = "{\"第二名\":230.45,\"第一名\":300,\"第三名\":150}"
let decoded = try encoded.jsonDecode() as? [String:Any]
// 結果
["第二名": 230.44999999999999, "第一名": 300, "第三名": 150]
3.類編碼為JSON字符串
- 類定義
class User: JSONConvertibleObject {
static let registerName = "user"
var firstName = ""
var lastName = ""
var age = 0
override func setJSONValues(_ values: [String : Any]) {
self.firstName = getJSONValue(named: "firstName", from: values, defaultValue: "")
self.lastName = getJSONValue(named: "lastName", from: values, defaultValue: "")
self.age = getJSONValue(named: "age", from: values, defaultValue: 0)
}
override func getJSONValues() -> [String : Any] {
return [
JSONDecoding.objectIdentifierKey:User.registerName,
"firstName":firstName,
"lastName":lastName,
"age":age
]
}
}
- 注冊定義好的類信息
// 運行一次即可
JSONDecoding.registerJSONDecodable(name: User.registerName, creator: { return User() })
- 對象編碼
let user = User()
user.firstName = "Donnie"
user.lastName = "Darko"
user.age = 17
let encoded = try user.jsonEncodedString()
// 結果
{"lastName":"Darko","age":17,"_jsonobjid":"user","firstName":"Donnie"}
- 對象解碼
guard let user2 = try encoded.jsonDecode() as? User else {
return // 出錯
}
// 驗證屬性值是否一致
XCTAssert(user.firstName == user2.firstName)
XCTAssert(user.lastName == user2.lastName)
XCTAssert(user.age == user2.age)
