怎樣通過NSJSONSerialization生成和解析JSON數(shù)據(jù)

生成JSON數(shù)據(jù)：

// 創(chuàng)建一個(gè)字典作為JSON數(shù)據(jù)
let data: [String: Any] = [
    "name": "Alice",
    "age": 25,
    "city": "New York"
]

// 使用NSJSONSerialization將字典轉(zhuǎn)換為JSON數(shù)據(jù)
do {
    let jsonData = try JSONSerialization.data(withJSONObject: data, options: .prettyPrinted)
    
    if let jsonString = String(data: jsonData, encoding: .utf8) {
        print(jsonString)
    }
} catch {
    print("Error generating JSON data: \(error)")
}

解析JSON數(shù)據(jù)：

// 假設(shè)jsonData是包含JSON數(shù)據(jù)的Data對(duì)象
do {
    // 使用NSJSONSerialization解析JSON數(shù)據(jù)
    if let json = try JSONSerialization.jsonObject(with: jsonData, options: []) as? [String: Any] {
        if let name = json["name"] as? String {
            print("Name: \(name)")
        }
        
        if let age = json["age"] as? Int {
            print("Age: \(age)")
        }
        
        if let city = json["city"] as? String {
            print("City: \(city)")
        }
    }
} catch {
    print("Error parsing JSON data: \(error)")
}

這樣就可以通過NSJSONSerialization生成和解析JSON數(shù)據(jù)。