Json.NET

Question

我有一个这样的数组：

{
"214460106": {
    "HALTESTELLEN_ID": "214460106",
    "TYP": "stop",
    "DIVA": "60200001",
    "NAME": "Absberggasse",
    "GEMEINDE": "Wien",
    "GEMEINDE_ID": "90000",
    "WGS84_LAT": "48.1738010728644",
    "WGS84_LON": "16.3898072745249",
    "STAND": "",
    "PLATFORMS": [{
        "LINIE": "6",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptTram",
        "RBL_NUMMER": "406",
        "BEREICH": "0",
        "RICHTUNG": "H",
        "REIHENFOLGE": "16",
        "STEIG": "6-H",
        "STEIG_WGS84_LAT": "48.173825035357",
        "STEIG_WGS84_LON": "16.3894569315641"
    },
    {
        "LINIE": "6",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptTram",
        "RBL_NUMMER": "420",
        "BEREICH": "0",
        "RICHTUNG": "R",
        "REIHENFOLGE": "19",
        "STEIG": "6-R",
        "STEIG_WGS84_LAT": "48.1739867818893",
        "STEIG_WGS84_LON": "16.3898162576777"
    },
    {
        "LINIE": "N6",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptBusNight",
        "RBL_NUMMER": "406",
        "BEREICH": "0",
        "RICHTUNG": "H",
        "REIHENFOLGE": "13",
        "STEIG": "N6-H",
        "STEIG_WGS84_LAT": "48.1738010728644",
        "STEIG_WGS84_LON": "16.3892682853544"
    },
    {
        "LINIE": "N6",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptBusNight",
        "RBL_NUMMER": "420",
        "BEREICH": "0",
        "RICHTUNG": "R",
        "REIHENFOLGE": "6",
        "STEIG": "N6-R",
        "STEIG_WGS84_LAT": "48.1740406972867",
        "STEIG_WGS84_LON": "16.3896994766908"
    }],
    "LINES": ["6",
    "N6"]
},
"214460107": {
    "HALTESTELLEN_ID": "214460107",
    "TYP": "stop",
    "DIVA": "60200002",
    "NAME": "Achengasse",
    "GEMEINDE": "Wien",
    "GEMEINDE_ID": "90000",
    "WGS84_LAT": "48.2845258075837",
    "WGS84_LON": "16.4488984539143",
    "STAND": "",
    "PLATFORMS": [{
        "LINIE": "32A",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptBusCity",
        "RBL_NUMMER": "1168",
        "BEREICH": "0",
        "RICHTUNG": "H",
        "REIHENFOLGE": "7",
        "STEIG": "32A-H",
        "STEIG_WGS84_LAT": "48.284334521556",
        "STEIG_WGS84_LON": "16.4489523528313"
    },
    {
        "LINIE": "32A",
        "ECHTZEIT": "1",
        "VERKEHRSMITTEL": "ptBusCity",
        "RBL_NUMMER": "1159",
        "BEREICH": "0",
        "RICHTUNG": "R",
        "REIHENFOLGE": "35",
        "STEIG": "32A-R",
        "STEIG_WGS84_LAT": "48.2844540754073",
        "STEIG_WGS84_LON": "16.4509825453734"
    }],
    "LINES": ["32A"]
},
... and so on

有什么方法可以在 List<class> 中格式化这样的东西吗？我试着这样做，但他总是停在 21460106 号码处。还尝试了 json2csharp，但这只会产生 5000 classes，其中每个 class 的名称都是数字。

Answer 1

我认为不能将数字用作字段，请尝试以字母字符开头，例如 A214460106。

这只是测试您的格式设置是否正确的一种快速方法。您可以从列表转换为 Json 字符串，然后再转换回数据表，只是为了检查字符串是否正常工作，而无需使用模型。

  private void button1_Click(object sender, EventArgs e)
    {
        List<Employees> employees = new List<Employees>();
        Employees employee = new Employees();
        employee.firstName = "a";
        employees.Add(employee);

        string json = JsonConvert.SerializeObject(employees);
        DataTable dt = (DataTable)JsonConvert.DeserializeObject(json, (typeof(DataTable)));
    }



}
public class Employees
{
    public string firstName { get; set; }
    public string lastName { get; set; }

}

Answer 2

您的外部 JSON 容器不是一个数组，它是一个 JSON object：一组用大括号括起来的逗号分隔的 name/value 对。由于名称是任意键而不是固定的，因此反序列化它的最简单方法是作为字典。

类型：

public class PLATFORM
{
    public string LINIE { get; set; }
    public string ECHTZEIT { get; set; }
    public string VERKEHRSMITTEL { get; set; }
    public string RBL_NUMMER { get; set; }
    public string BEREICH { get; set; }
    public string RICHTUNG { get; set; }
    public string REIHENFOLGE { get; set; }
    public string STEIG { get; set; }
    public string STEIG_WGS84_LAT { get; set; }
    public string STEIG_WGS84_LON { get; set; }
}

public class RootObject
{
    public string HALTESTELLEN_ID { get; set; }
    public string TYP { get; set; }
    public string DIVA { get; set; }
    public string NAME { get; set; }
    public string GEMEINDE { get; set; }
    public string GEMEINDE_ID { get; set; }
    public string WGS84_LAT { get; set; }
    public string WGS84_LON { get; set; }
    public string STAND { get; set; }
    public List<PLATFORM> PLATFORMS { get; set; }
    public List<string> LINES { get; set; }
}

反序列化代码：

var dict = JsonConvert.DeserializeObject<Dictionary<long, RootObject>>(json);

我选择 long 作为键类型，因为您的所有根属性名称看起来都是完整的字符串。如果没有，你可以使用 Dictionary<string, RootObject>。

为了生成 RootObject class，我从根对象中的一个值中复制了 JSON -- 的值"214460106" 在这种情况下——到 http://json2csharp.com/.

示例 fiddle.

有关相关文档，请参阅：Deserialize a Dictionary。

Json.NET - 格式化带有名称的对象数组

Json.NET - format an array of objects with names

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