解码嵌套的JSON元素(SwiftUI)

{
  "name": "John Doe",
  "age": 30,
  "address": {
    "street": "123 Elm St",
    "city": "Springfield",
    "zipcode": "12345"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john.doe@example.com"
    },
    {
      "type": "phone",
      "value": "555-1234"
    }
  ]
}

struct Person: Codable {
    let name: String
    let age: Int
    let address: Address
    let contacts: [Contact]
}

struct Address: Codable {
    let street: String
    let city: String
    let zipcode: String
}

struct Contact: Codable {
    let type: String
    let value: String
}

let jsonString = """
{
  "name": "John Doe",
  "age": 30,
  "address": {
    "street": "123 Elm St",
    "city": "Springfield",
    "zipcode": "12345"
  },
  "contacts": [
    {
      "type": "email",
      "value": "john.doe@example.com"
    },
    {
      "type": "phone",
      "value": "555-1234"
    }
  ]
}
"""

if let jsonData = jsonString.data(using: .utf8) {
    do {
        let person = try JSONDecoder().decode(Person.self, from: jsonData)
        print(person.name) // 输出: John Doe
        print(person.address.city) // 输出: Springfield
    } catch {
        print("Failed to decode JSON: \(error)")
    }
}