如何從url中檢索Json作爲字符串？

Question

我有一個返回JSON的URL。我正在開發一個Windows Phone應用程序，我想通過發送url來獲取該json數據，然後將其轉換爲字符串並從中提取數據。我已經下載了json.net來閱讀json數據。
我是否必須反序列化數據..是否有必要？
我不能以字符串格式獲取數據，然後解析它。

我正在使用下面的代碼來讀取字符串格式的json數據。

Array Movies = jObject["movies"].ToArray(); 
foreach (JToken Movie in Movies) 
    MessageBox.Show(Movie["title"].ToString()); 

JSON的是這樣的：

 
{"total":51,"movies":[{"id":"771242005","title":"Magic Mike","year":2012,"mpaa_rating":"R","runtime":110,"critics_consensus":"Magic Mike's sensitive direction, smart screenplay, and strong performances allow audiences to have their beefcake and eat it too.","release_dates":{"theater":"2012-06-29","dvd":"2012-10-23"},"ratings":{"critics_rating":"Certified Fresh","critics_score":79,"audience_rating":"Upright","audience_score":63},"synopsis":"Set in the world of male strippers, Magic Mike is directed by Steven Soderbergh and stars Channing Tatum in a story inspired by his real life. The film follows Mike (Tatum) as he takes a young dancer called The Kid (Pettyfer) under his wing and schools him in the fine arts of partying, picking up women, and making easy money. -- (C) Warner Bros.","posters":{"thumbnail":"http://content8.flixster.com/movie/11/16/66/11166610_mob.jpg","profile":"http://content8.flixster.com/movie/11/16/66/11166610_pro.jpg","detailed":"http://content8.flixster.com/movie/11/16/66/11166610_det.jpg","original":"http://content8.flixster.com/movie/11/16/66/11166610_ori.jpg"},"abridged_cast":[{"name":"Channing Tatum","id":"162661835","characters":["Magic Mike"]},{"name":"Alex Pettyfer","id":"326298019","characters":["Adam","The Kid"]},{"name":"Matt Bomer","id":"771077752","characters":["Ken"]},{"name":"Joe Manganiello","id":"770800475","characters":["Big Dick Richie"]},{"name":"Matthew McConaughey","id":"162652350","characters":["Dallas"]}],"alternate_ids":{"imdb":"1915581"},"links":{"self":"http://api.rottentomatoes.com/api/public/v1.0/movies/771242005.json","alternate":"http://www.rottentomatoes.com/m/magic_mike/","cast":"http://api.rottentomatoes.com/api/public/v1.0/movies/771242005/cast.json","clips":"http://api.rottentomatoes.com/api/public/v1.0/movies/771242005/clips.json","reviews":"http://api.rottentomatoes.com/api/public/v1.0/movies/771242005/reviews.json","similar":"http://api.rottentomatoes.com/api/public/v1.0/movies/771242005/similar.json"}}],"links":{"self":"http://api.rottentomatoes.com/api/public/v1.0/lists/dvds/upcoming.json?page_limit=1&country=us&page=1","next":"http://api.rottentomatoes.com/api/public/v1.0/lists/dvds/upcoming.json?page_limit=1&country=us&page=2","alternate":"http://www.rottentomatoes.com/dvd/upcoming.json"},"link_template":"http://api.rottentomatoes.com/api/public/v1.0/lists/dvds/upcoming.json?page_limit={results-per-page}&page={page-number}&country={country-code}"} 

`

我只希望影片名稱和標題雖然。

Answer 1

如果你的問題是「是否需要反序列化」，那麼答案是否定的，這是沒有必要的。

也就是說，在使用數據服務器端時，將JSON字符串反序列化爲強類型對象通常是首選，因爲它可以減少運行時錯誤並使其更容易測試代碼。

實施例使用JSON.Net：

public class Movie 
{ 
    public string Name { get; set; } 
    public string Title { get; set; } 
} 

public Movie Convert(string jsonString) 
{ 
    return JsonConvert.DeserializeObject<Movie>(jsonString); 
} 

有用於反序列化JSON到一個對象的其他選項。如果您有一個代表JSON對象的DataContract，則可以使用DataContractJsonSerializer。