用C＃反序列化JSON（多個對象）

Question

我試圖反序列化一個學校，然後再插入到條形圖中。 JSON對象是這樣的：

[{"Subject": "TEST APP","AppScores": [{"Season": "AAAAAAAAAAAAAAAAAAAA","year": "1"}, {"Season": "BBBBBBBBBBBBBBBBBBBBB","year": "2"}]}, {"Subject": "TEST APP2","AppScores": [{"Season": "CCCCCCCCCCC","year": "3"}, {"Season": "DDDDDDDDDDDDDDDDD","year": "4"}]}] 

輸出，我希望能在Console.WriteLine();

Subject: TEST APP 
AppScores 
Season: AAAAAAAAAAAAAAAAAAAA 
Year: 1 
Season: BBBBBBBBBBBBBBBBBBBBB 
Year: 2 
Subject: TESTAPP2 
AppScores 
Season: CCCCCCCCCCC 
Year: 3 
Season: DDDDDDDDDDDDDDDDD 
Year: 4 

看到我看到這個已經在使用類似如下代碼的方式多次完成。

School subject = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<School>(json); 
foreach (var item in subject.data) 
{Console.WriteLine("season: {0}, year: {1}", item.season, item.year); Console.ReadLine();} 

從類中調用：

public class School 
{ 
public List<SchoolSubjects> data { get; set; } 
} 
public class SchoolSubjects 
{ 
public string year { get; set; } 
public string season { get; set; } 
} 

誰能幫助修改這個代碼，因爲我無法找到，會做任何的例子？提前致謝。

Answer 1

你的問題是，你的根JSON容器是一個數組，而不是一個對象：

• 數組是值的有序集合。一個數組以[（左括號）開頭並以]（右括號）結尾。值由,（逗號）分隔。

• 一個對象是一組無名稱/值對。一個對象以{（左大括號）開頭，以}（右大括號）結尾。

甲JSON陣列需要被反序列化爲一個集合，諸如List<T>。

如果我上傳你的JSON到http://json2csharp.com/，我得到了下面的類，更名爲更恰當：

public class SchoolSubjectAppScore 
{ 
    public string Season { get; set; } 
    public string year { get; set; } 
} 

public class SchoolSubject 
{ 
    public SchoolSubject() { this.AppScores = new List<SchoolSubjectAppScore>(); } 
    public string Subject { get; set; } 
    public List<SchoolSubjectAppScore> AppScores { get; set; } 
} 

那麼你的JSON可以反序列化並打印如下：

 var root = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<List<SchoolSubject>>(json); 
     foreach (var subject in root) 
     { 
      Console.WriteLine(subject.Subject); 

      foreach (var item in subject.AppScores) 
      { 
       Console.WriteLine("season: {0}, year: {1}", item.Season, item.year); 
      } 
     }