如何在Swift中使用Codable获取JSON数组值

[
  {
    "name": "John",
    "age": 25
  },
  {
    "name": "Jane",
    "age": 30
  }
]

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

let jsonString = """
[
  {
    "name": "John",
    "age": 25
  },
  {
    "name": "Jane",
    "age": 30
  }
]
"""

if let jsonData = jsonString.data(using: .utf8) {
    do {
        let decoder = JSONDecoder()
        let people = try decoder.decode([Person].self, from: jsonData)
        
        for person in people {
            print("Name: \(person.name), Age: \(person.age)")
        }
    } catch {
        print("Error decoding JSON: \(error)")
    }
}

let people = [
    Person(name: "John", age: 25),
    Person(name: "Jane", age: 30)
]

do {
    let encoder = JSONEncoder()
    let jsonData = try encoder.encode(people)
    
    if let jsonString = String(data: jsonData, encoding: .utf8) {
        print(jsonString)
    }
} catch {
    print("Error encoding JSON: \(error)")
}