Newtonsoftを使用してjson文字列をオブジェクトに逆シリアル化する

Question

json文字列をオブジェクトのリストに変換しようとしています。ここにJsonの文字列があります。

{"fooditems":[{"item_id":1,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Hollandia","food_description":"Maiores excepturi dolores recusandae quam. Et consequatur sunt et hic recusandae. Vero quisquam sed nemo cumque voluptates qui.","price":"144","item_special":"0","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":2,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Amstel Malta","food_description":"Delectus et voluptas qui. Quae dolorem rerum dignissimos et. Blanditiis porro temporibus perspiciatis voluptates similique.","price":"185","item_special":"1","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":3,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Egusi soup","food_description":"Aliquid et doloribus quis deserunt aut quas. Explicabo qui accusamus tempore omnis sint porro nostrum. Est nulla et commodi. Et reprehenderit rerum natus ipsa voluptas labore.","price":"152","item_special":"1","category":"1","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Food"},{"item_id":4,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Ponche","food_description":"Consequatur eius aut aut laudantium quis. Fuga facere a amet voluptatum. Ex optio accusamus corrupti porro repellendus ea.","price":"112","item_special":"1","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":5,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Teem","food_description":"Est atque eum et qui dolore ut. Dignissimos dicta qui nesciunt mollitia quo. Voluptatibus suscipit eaque laboriosam et ad. Iste illo vel consequatur doloribus.","price":"165","item_special":"1","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":6,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Yam Pepper soup","food_description":"Illo et ab doloribus adipisci quo hic aut. Ea fugiat ut sed minus ad non nesciunt modi. Voluptatibus nostrum labore cum maxime ullam.","price":"143","item_special":"1","category":"1","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Food"},{"item_id":7,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Coke","food_description":"Inventore nulla beatae incidunt delectus itaque provident accusantium. Aperiam veritatis doloribus veritatis illum rerum eum reprehenderit dolore. Ut quis fuga quia est.","price":"151","item_special":"0","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":8,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Jollof Rice","food_description":"Fugit labore vel ea sit voluptas consequuntur eum iste. Dolorum non distinctio sed explicabo. Saepe velit hic praesentium molestiae aperiam in autem. Soluta enim tenetur omnis tempore qui odit.","price":"172","item_special":"1","category":"1","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Food"},{"item_id":9,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Meat Pie","food_description":"Et vitae eveniet maxime maxime a. Explicabo consequatur quas atque non. Tempora voluptate similique dolore minus enim sit nulla eaque. Ut omnis aut incidunt assumenda excepturi.","price":"144","item_special":"0","category":"3","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Snacks"},{"item_id":10,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Doughnut","food_description":"Enim ipsa dolores velit autem. Illo rerum in voluptatem fugiat delectus. Sint quos provident soluta nisi ut. Cupiditate nemo temporibus qui fugiat earum fugit. Recusandae sit explicabo non exercitationem voluptatem fugiat.","price":"139","item_special":"1","category":"3","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Snacks"},{"item_id":11,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Fanta","food_description":"Voluptas qui asperiores qui ratione officia. Aut aliquid placeat sunt error saepe at. Repellat et ut sequi fuga aut ad debitis. Voluptatem minus sunt quam autem aut quod. Et sed dolorem qui quas.","price":"190","item_special":"1","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":12,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Viju Milk","food_description":"Minima excepturi voluptatem aut a sequi numquam deserunt veritatis. Enim ut vitae aut et. Non laudantium consequatur praesentium accusantium quo. Suscipit sequi dolor culpa consectetur quisquam dolorem.","price":"157","item_special":"0","category":"2","date_created":"2016-10-18 07:12:45","date_updated":"2016-10-18 07:12:45","category_name":"Drinks"},{"item_id":13,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Nutri Milk","food_description":"Voluptatem atque consequatur aut est laudantium voluptas et. Earum et nihil minima ea ex. Et consequatur odio voluptas nihil quod.","price":"149","item_special":"1","category":"2","date_created":"2016-10-18 07:12:46","date_updated":"2016-10-18 07:12:46","category_name":"Drinks"},{"item_id":14,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Eva Water","food_description":"Labore voluptatibus omnis omnis eaque. Occaecati aliquid voluptatum ducimus. Excepturi id magni quidem.","price":"137","item_special":"0","category":"2","date_created":"2016-10-18 07:12:46","date_updated":"2016-10-18 07:12:46","category_name":"Drinks"},{"item_id":15,"image_url":"http:\/\/tse1.mm.bing.net\/th?id=OIP.M201ca8470787c6ccf50f3b05118d2a27o0&pid=15.1","food_name":"Chapman","food_description":"Aut fugit recusandae laborum voluptas ut soluta accusantium. Impedit itaque nihil officia voluptas sed corrupti dicta. Reprehenderit id aut occaecati expedita doloribus et. Omnis quasi vel illum nam id tempora incidunt.","price":"194","item_special":"0","category":"2","date_created":"2016-10-18 07:12:46","date_updated":"2016-10-18 07:12:46","category_name":"Drinks"}]} 

と使用json2csharp、私はこのクラス

public class Rootobject 
{ 
    public Fooditem[] Fooditems { get; set; } 
} 

public class Fooditem 
{ 
    public int item_id { get; set; } 
    public string image_url { get; set; } 
    public string food_name { get; set; } 
    public string food_description { get; set; } 
    public string price { get; set; } 
    public string item_special { get; set; } 
    public string category { get; set; } 
    public string date_created { get; set; } 
    public string date_updated { get; set; } 
    public string category_name { get; set; } 
} 

を得ました。しかし、ここでデシリアライズすることは誤りだとき、私は取得 Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List 1 [Proxy.Models.Fooditem]」タイプ（JSON配列を必要とするため例えば[ 1,2,3]）を使用して正しくデシリアライズします。 このエラーを修正するには、JSON配列をJSON配列（[1,2,3]など）に変更するか、デシリアライズされた型を通常の.NET型（たとえば、コレクション型ではなく整数などのプリミティブ型JSONオブジェクトからデシリアライズできる配列やリストのようなものです。 JsonObjectAttributeを型に追加して、強制的にJSONオブジェクトから逆シリアル化することもできます。 `

私のコードをデシリアライズしています。

var fooditems=JsonConvert.DeserializeObject<List<Fooditem>>(json) 

申し訳ありません。かなり長いです。助けていただければ幸いです。逆シリアル化のための

Answer 1

使用これを：あなたの問題がどこにある var fooditems = JsonConvert.DeserializeObject<Rootobject>(jsonString);

あなたがFoodItemsのリストにRootObjectのJSONをキャストしようとしているが、問題

Answer 2

OKですが、私はあなたの問題は、あなたがしようとしているということです 、参照しますjson文字列をリストに直接的に逆シリアル化し、jsonコードはリストがオブジェクトの中のプロパティであることを示します。

jsonコードは{で始まり、リストを持つオブジェクトであることを意味します。だから、JSON文字列を動作するようにあなたのコードのために、これはリストではなくだからあなたのコードは、あなたがオプションに持っている作品にするために、リスト

を持つオブジェクトであることを述べている[で始まる必要があります。

1. どちらのあなたは、このCで[

2. 使用このvar fooditems = JsonConvert.DeserializeObject<Rootobject>(jsonString);

で始まるあなたのJSON文字列を送信するためにチームを伝えますaseはRootObject型のオブジェクトを返します