如何在 VB.Net 中使用反序列化的 JSON 数据？
我正在尝试访问我认为我已经从 vb.net 年的 JSON 文件中成功反序列化的数据。
我的程序当前将数据从 JSON 文件读入字符串。我一直在研究如何将 JSON 数据反序列化为类结构，并使用可视化工作室功能为我创建类结构。
我的问题是，反序列化后如何访问该数据？我已经浏览了数百页的论坛和堆栈溢出的帖子，但都无济于事。
以下是JSON数据:
{
"total": 389097,
"offset": 0,
"items": [
{
"entity": "Play",
"arid": "mpdwyOB32n",
"played_time": "2020-02-21T06:21:26+0000",
"service_id": "triplej",
"recording": {
"entity": "Recording",
"arid": "mtNYq18DdY",
"title": "Supalonely",
"metadata": null,
"description": null,
"duration": 219,
"artists": [
{
"entity": "Artist",
"arid": "ma35vZnl5B",
"name": "Benee",
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlb5b4r7A0",
"url": "http://musicbrainz.org/artist/c352c56b-a610-4fc4-884c-704547ef30f5",
"id_component": "c352c56b-a610-4fc4-884c-704547ef30f5",
"title": "MusicBrainz artist",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
],
"is_australian": null,
"type": "primary",
"role": null
}
],
"releases": [
{
"entity": "Release",
"arid": "mr45LNQePX",
"title": "Stella & Steve",
"format": "EP",
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlV0JZbO20",
"url": "http://musicbrainz.org/release-group/9d0271c7-6448-4cbf-a335-0221e34a73ae",
"id_component": "9d0271c7-6448-4cbf-a335-0221e34a73ae",
"title": "MusicBrainz release-group",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
],
"artists": [
{
"entity": "Artist",
"arid": "ma35vZnl5B",
"name": "Benee",
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlb5b4r7A0",
"url": "http://musicbrainz.org/artist/c352c56b-a610-4fc4-884c-704547ef30f5",
"id_component": "c352c56b-a610-4fc4-884c-704547ef30f5",
"title": "MusicBrainz artist",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
],
"is_australian": null,
"type": "primary",
"role": null
}
],
"record_label": null,
"release_year": null,
"release_album_id": null
}
],
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlwkZWz960",
"url": "http://musicbrainz.org/recording/2772cd61-892c-47ab-bc0e-1ca775ebe6f4",
"id_component": "2772cd61-892c-47ab-bc0e-1ca775ebe6f4",
"title": "MusicBrainz recording",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
]
},
"release": {
"entity": "Release",
"arid": "mr45LNQePX",
"title": "Stella & Steve",
"format": "EP",
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlV0JZbO20",
"url": "http://musicbrainz.org/release-group/9d0271c7-6448-4cbf-a335-0221e34a73ae",
"id_component": "9d0271c7-6448-4cbf-a335-0221e34a73ae",
"title": "MusicBrainz release-group",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
],
"artists": [
{
"entity": "Artist",
"arid": "ma35vZnl5B",
"name": "Benee",
"artwork": [],
"links": [
{
"entity": "Link",
"arid": "mlb5b4r7A0",
"url": "http://musicbrainz.org/artist/c352c56b-a610-4fc4-884c-704547ef30f5",
"id_component": "c352c56b-a610-4fc4-884c-704547ef30f5",
"title": "MusicBrainz artist",
"mini_synopsis": null,
"short_synopsis": null,
"medium_synopsis": null,
"type": "service",
"provider": "musicbrainz",
"external": true
}
],
"is_australian": null,
"type": "primary",
"role": null
}
],
"record_label": null,
"release_year": null,
"release_album_id": null
}
}
]
}
下面是Visual Studio生成的类结构:
Public Class JSON_Class
Public Class Rootobject
Public Property total As Integer
Public Property offset As Integer
Public Property items() As Item
End Class
Public Class Item
Public Property entity As String
Public Property arid As String
Public Property played_time As Date
Public Property service_id As String
Public Property recording As Recording
Public Property release As Release1
End Class
Public Class Recording
Public Property entity As String
Public Property arid As String
Public Property title As String
Public Property metadata As Object
Public Property description As Object
Public Property duration As Integer
Public Property artists() As Artist
Public Property releases() As Release
Public Property artwork() As Object
Public Property links() As Object
End Class
Public Class Artist
Public Property entity As String
Public Property arid As String
Public Property name As String
Public Property artwork() As Object
Public Property links() As Object
Public Property is_australian As Object
Public Property type As String
Public Property role As Object
End Class
Public Class Release
Public Property entity As String
Public Property arid As String
Public Property title As String
Public Property format As String
Public Property artwork() As Object
Public Property links() As Object
Public Property artists() As Artist1
Public Property record_label As Object
Public Property release_year As Object
Public Property release_album_id As Object
End Class
Public Class Artist1
Public Property entity As String
Public Property arid As String
Public Property name As String
Public Property artwork() As Object
Public Property links() As Object
Public Property is_australian As Object
Public Property type As String
Public Property role As Object
End Class
Public Class Release1
Public Property entity As String
Public Property arid As String
Public Property title As String
Public Property format As String
Public Property artwork() As Object
Public Property links() As Object
Public Property artists() As Artist2
Public Property record_label As Object
Public Property release_year As Object
Public Property release_album_id As Object
End Class
Public Class Artist2
Public Property entity As String
Public Property arid As String
Public Property name As String
Public Property artwork() As Object
Public Property links() As Object
Public Property is_australian As Object
Public Property type As String
Public Property role As Object
End Class
End Class
我使用下面这行代码反序列化我的数据:(其中JSON_Class是类结构，New_JSON_Content是原始JSON)
Dim JSON_Wrapper = JsonConvert.DeserializeObject(Of JSON_Class)(New_JSON_Content)
如果说我想从填充的类结构中访问任何一个特定变量，我的下一步是什么？谢谢！
共有1个答案
您看不到任何数据的原因是JSON_Class，您要反序列化到的类，不包含任何成员。代码起作用了；它完全按照您告诉它的那样做——从这个JSON字符串创建一个JSON_Class的实例——它什么也不包含。与反序列化类型中的任何内容都不匹配的JSON标记被忽略，在这种情况下，这就是一切。
要实现这一点，请反序列化为＜code＞JSON_Class。根对象。您也不需要将反序列化类嵌套在包含类中。
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