Question

我正在尝试将学校反序列化，然后插入条形图。 JSON对象如下所示：

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

我希望在Console.WriteLine();

中看到的输出

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

我已经看到过使用下面类似的代码以多种方式完成此操作。

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();}

来自班级的电话：

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

任何人都可以帮助修改此代码，因为我找不到任何可以执行此操作的示例吗？提前谢谢。

Answer 1

您的问题是您的根JSON容器是一个数组，而不是一个对象：

数组是有序的值集合。数组以[（左括号）开头，以]（右括号）结尾。值以,（逗号）分隔。
对象是一组无序的名称/值对。对象以{（左大括号）开头，以}（右大括号）结束。

需要将JSON数组反序列化为集合，例如List<T>。

如果我将您的JSON上传到http://json2csharp.com/，我会得到以下类，更适合重命名：

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; }
}

然后您的JSON可以反序列化并打印如下：

        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);
            }
        }

使用C＃反序列化JSON（多个对象）

1 个答案: