反序列化JSON swift 4.2

struct Person: Codable {
    let name: String
    let age: Int
}

let json = """
{
    "name": "John",
    "age": 25
}
"""

let jsonData = json.data(using: .utf8)!

do {
    let decoder = JSONDecoder()
    let person = try decoder.decode(Person.self, from: jsonData)
    print(person.name) // 输出: John
    print(person.age) // 输出: 25
} catch {
    print("反序列化失败: \(error)")
}