从JSON API追加到数组中
从JSON API追加到数组中
提问于 2018-06-10 00:15:43
如何使用JSON Model Class将其追加到数组中。下面是我的JSON API请求：https://developer.github.com/v3/search/
import Foundation
typealias GitDecode = [GitDecodeElement]
struct GitDecodeElement: Codable {
let totalCount: Int
let incompleteResults: Bool
let items: [Item]
enum CodingKeys: String, CodingKey {
case totalCount = "total_count"
case incompleteResults = "incomplete_results"
case items
}
}
struct Item: Codable {
let id: Int
let nodeID, name, fullName: String
let owner: Owner
let itemPrivate: Bool
let htmlURL, description: String
let fork: Bool
let url, createdAt, updatedAt, pushedAt: String
let homepage: String
let size, stargazersCount, watchersCount: Int
let language: String
let forksCount, openIssuesCount: Int
let masterBranch, defaultBranch: String
let score: Double
enum CodingKeys: String, CodingKey {
case id
case nodeID = "node_id"
case name
case fullName = "full_name"
case owner
case itemPrivate = "private"
case htmlURL = "html_url"
case description, fork, url
case createdAt = "created_at"
case updatedAt = "updated_at"
case pushedAt = "pushed_at"
case homepage, size
case stargazersCount = "stargazers_count"
case watchersCount = "watchers_count"
case language
case forksCount = "forks_count"
case openIssuesCount = "open_issues_count"
case masterBranch = "master_branch"
case defaultBranch = "default_branch"
case score
}
}
struct Owner: Codable {
let login: String
let id: Int
let nodeID, avatarURL, gravatarID, url: String
let receivedEventsURL, type: String
enum CodingKeys: String, CodingKey {
case login, id
case nodeID = "node_id"
case avatarURL = "avatar_url"
case gravatarID = "gravatar_id"
case url
case receivedEventsURL = "received_events_url"
case type
}
}这里我有我的类模型，其中我说出了我想从响应中提取的内容：
import Foundation
struct Git: Codable{
let totalCount: Int
let items: GitItem
init ( totalCount: Int,
itemID: Int, itemDescription: String,
ownerID: Int, ownerAvatarURL: String) {
self.totalCount = totalCount
self.items = GitItem(id: itemID, description: itemDescription, owner: GitOwner(id: ownerID, avatarURL: ownerAvatarURL))
}
}
struct GitItem: Codable{
let id: Int
let description: String
let owner: GitOwner
}
struct GitOwner: Codable {
let id: Int
let avatarURL: String
}现在，当我试图将所有自定义属性追加到数组中时，因为itemID、itemDescription、ownerID和ownerAvatarURL在不同的类中，所以我陷入了困境。
下面是我如何使用JSONDecoder从JSON中获取所有的那个属性：
import UIKit
class MainViewController: UIViewController {
var gitRepositoriesArray = [Git]()
override func viewDidLoad() {
super.viewDidLoad()
}
// Download Git Repositories from API
func parseGitRepositories(){
let url = URL(string: "https://developer.github.com/v3/search/")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error == nil{
do{
let gitRepositoriesList = try JSONDecoder().decode(GitDecode.self, from: data!)
for eachRepo in gitRepositoriesList{
self.gitRepositoriesArray.append(Git(totalCount: eachRepo.totalCount,
itemID: <#T##Int#> , itemDescription: <#T##String#>, ownerID: <#T##Int#>, ownerAvatarURL: <#T##String#>))
}
}catch{
print(error.localizedDescription)
}
}
}.resume()
}
}回答 1
Stack Overflow用户
发布于 2018-06-10 01:02:54
你的Git结构中有一些问题。我已经像这样更正了初始化器：
struct Git: Codable{
let totalCount: Int
var items = [GitItem]()
init(totalCount: Int, items: [Item]) {
self.totalCount = totalCount
for item in items {
self.items.append(GitItem(id: item.id, description: item.description, owner: GitOwner(id: item.owner.id, avatarURL: item.owner.avatarURL)))
}
}因此，您的解析方法将相应地进行更改：
// Download Git Repositories from API
func parseGitRepositories(){
let url = URL(string: "https://api.github.com/search/repositories?q=tetris+language:assembly&sort=stars&order=desc")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error == nil{
do{
let gitRepositoriesList = try JSONDecoder().decode(GitDecode.self, from: data!)
for eachRepo in gitRepositoriesList{
self.gitRepositoriesArray.append(Git(totalCount: eachRepo.totalCount, items: eachRepo.items))
}
}catch{
print(error.localizedDescription)
}
}
}.resume()
}还要注意将url更改为https://api.github.com/search/repositories?q=tetris+language:assembly&sort=stars&order=desc。您在代码中使用的当前url只是带有示例的html页面。它不会返回正确的json结果。
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原文链接：
https://stackoverflow.com/questions/50776216
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