如何在Swift中从JSON对象中移除属性(key:values)

import Foundation

// 创建自定义类型结构体
struct Person: Codable {
    var name: String
    var age: Int
    var gender: String
}

// JSON字符串
let jsonString = """
{
  "name": "John",
  "age": 30,
  "gender": "male"
}
"""

// 解析JSON字符串为Person对象
let jsonData = jsonString.data(using: .utf8)!
let decoder = JSONDecoder()
var person = try! decoder.decode(Person.self, from: jsonData)

// 移除不需要的属性（这里移除了gender属性）
person.gender = ""

// 将修改后的实例重新序列化为JSON字符串
let encoder = JSONEncoder()
encoder.outputFormatting = .prettyPrinted
let modifiedJsonData = try! encoder.encode(person)
let modifiedJsonString = String(data: modifiedJsonData, encoding: .utf8)!

print(modifiedJsonString)

{
  "name" : "John",
  "age" : 30
}