我如何反序列化這個包含包裹在 json 對象中的數組的 JSON？

Question

我在論壇和許多教程中嘗試了很多答案來反序列化包裹在 json 對象中的 json 數組..但對我來說沒有任何幫助。

我正在嘗試從我的 wordpress 演示站點反序列化這個 json： https : //mahdii.000webhostapp.com/? wpapi = get_posts & dev =1

我想獲得帖子名稱和作者昵稱。

我嘗試過的是：

string json = new WebClient().DownloadString("https://mahdii.000webhostapp.com/?wpapi=get_posts&dev=1");
Console.WriteLine(json);
var deserialize_post = JsonConvert.DeserializeObject<List<RootObject>>(json);

我的課：

public class Author
{
    public string id { get; set; }
    public string slug { get; set; }
    public string name { get; set; }
    public string first_name { get; set; }
    public string last_name { get; set; }
    public string nickname { get; set; }
    public string url { get; set; }
    public string description { get; set; }
    public string gravatar { get; set; }
}

public class Post
{
    public string id { get; set; }
    public string type { get; set; }
    public string slug { get; set; }
    public string url { get; set; }
    public string status { get; set; }
    public string title { get; set; }
    public string title_plain { get; set; }
    public string date { get; set; }
    public string modified { get; set; }
    public string excerpt { get; set; }
    public string parent { get; set; }
    public List<object> category { get; set; }
    public List<object> tag { get; set; }
    public List<Author> author { get; set; }
    public string comment_count { get; set; }
    public string comment_status { get; set; }
}

public class RootObject
{
    public List<Post> posts { get; set; }
}

我在 deserialize_post 得到 null 我認為我做錯了如果有人可以幫助我，我需要幫助。

謝謝，

Answer 1

我做了一個 dotnetfiddle 示例來解決您的序列化問題：

https://dotnetfiddle.net/kpnYv0

從本質上講，我獲取了您的數據（您的網站目前正在接受死亡的擁抱）並將其放入以下邏輯中：

public static void Main()
{
    string json = new WebClient().DownloadString("https://mahdii.000webhostapp.com/?wpapi=get_posts&dev=1");

    var deserializePost = JsonConvert.DeserializeObject<RootObject>(json);
    var postInfo = deserializePost
        .posts
        .Select(p => new 
                { 
                    Name = p.title_plain, 
                    AuthorNicknames = p
                        .author
                        .Select(a => a.nickname) 
                });

    Console.WriteLine(postInfo.Count());
}

我只將特別請求的數據投影到postInfo變量中。 你會發現，每一個職位有多個作者，所以AuthorNicknames財產postInfo也是一個IEnumerable。

對於任何試圖提供幫助的人，這里是該站點返回的 JSON：

{
  "status": "ok",
  "count": 2,
  "count_total": 2,
  "pages": 1,
  "posts": [
    {
      "id": "9",
      "type": "post",
      "slug": "e5t-hal-3al2a",
      "url": "https:\/\/mahdii.000webhostapp.com\/?p=9",
      "status": "publish",
      "title": "e5t hal 3al2a",
      "title_plain": "e5t hal 3al2a",
      "date": "2017-02-09 19:35:05",
      "modified": "2017-02-09 19:35:05",
      "excerpt": "",
      "parent": "0",
      "category": [
        {
          "term_id": 1,
          "name": "Uncategorized",
          "slug": "uncategorized",
          "term_group": 0,
          "term_taxonomy_id": 1,
          "taxonomy": "category",
          "description": "",
          "parent": 0,
          "count": 1,
          "filter": "raw",
          "cat_ID": 1,
          "category_count": 1,
          "category_description": "",
          "cat_name": "Uncategorized",
          "category_nicename": "uncategorized",
          "category_parent": 0
        }
      ],
      "tag": [

      ],
      "author": [
        {
          "id": "1",
          "slug": "mahdi",
          "name": "mahdi",
          "first_name": "",
          "last_name": "",
          "nickname": "mahdi",
          "url": "",
          "description": "",
          "gravatar": "http:\/\/www.gravatar.com\/avatar\/b2f7652b7fd5e51e1ac71f6d23998c4c?s=100&d=mm&r=g"
        }
      ],
      "comment_count": "0",
      "comment_status": "open"
    },
    {
      "id": "2",
      "type": "page",
      "slug": "sample-page",
      "url": "https:\/\/mahdii.000webhostapp.com\/?page_id=2",
      "status": "publish",
      "title": "Sample Page",
      "title_plain": "Sample Page",
      "date": "2017-02-09 12:31:52",
      "modified": "2017-02-09 12:31:52",
      "excerpt": "This is an example page. It's different from a blog post because it will stay in one place and will show up in your site navigation (in most themes). Most people start with &hellip; <a href=\"https:\/\/mahdii.000webhostapp.com\/?page_id=2\"> Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a>",
      "parent": "0",
      "category": [

      ],
      "tag": [

      ],
      "author": [
        {
          "id": "1",
          "slug": "mahdi",
          "name": "mahdi",
          "first_name": "",
          "last_name": "",
          "nickname": "mahdi",
          "url": "",
          "description": "",
          "gravatar": "http:\/\/www.gravatar.com\/avatar\/b2f7652b7fd5e51e1ac71f6d23998c4c?s=100&d=mm&r=g"
        }
      ],
      "comment_count": "0",
      "comment_status": "closed"
    }
  ]
}