Question

ANSWER描述了使用LINQ to JSON和JObject来动态地从JSON转换为可用的对象。下面是完成的代码，它将我从JSON转移到可用对象，然后是原始问题。

            'Parse string of JSON data into a JObject that can be accessed via VB.NET
            Dim resultSet As JObject = JObject.Parse(responseBody)

            'Data can be accessed as seen below
            Dim cpu As String = CType(resultSet("KeyName"), String)

=============================================== ==========================

我有一个网络应用程序，它将对名为inContact（http://www.incontact.com/）的服务进行多次API调用

每个API调用都将接收以这种方式格式化的JSON填充的HTTP响应：

    {
  "resultSet": {
    "_links": {
      "self": "string",
      "next": "string",
      "previous": "string"
    },
    "businessUnitId": 0,
    "lastPollTime": "2016-11-08T21:45:46.510Z",
    "totalRecords": 0,
    "agents": [
      {
        "agentId": 0,
        "userName": "string",
        "firstName": "string",
        "middleName": "string",
        "lastName": "string",
        "emailAddress": "string",
        "isActive": true,
        "teamId": 0,
        "teamName": "string",
        "reportToId": 0,
        "reportToName": "string",
        "isSupervisor": true,
        "lastLogin": "2016-11-08T21:45:46.510Z",
        "lastUpdated": "2016-11-08T21:45:46.510Z",
        "location": "string",
        "custom1": "string",
        "custom2": "string",
        "custom3": "string",
        "custom4": "string",
        "custom5": "string",
        "internalId": "string",
        "profileId": 0,
        "profileName": "string",
        "timeZone": "string",
        "country": "string",
        "countryName": "string",
        "state": "string",
        "city": "string",
        "chatRefusalTimeout": 0,
        "phoneRefusalTimeout": 0,
        "workItemRefusalTimeout": 0,
        "defaultDialingPattern": 0,
        "defaultDialingPatternName": "string",
        "teamDefaultMaxChats": true,
        "maxConcurrentChats": 0,
        "notes": "string",
        "createDate": "2016-11-08T21:45:46.510Z",
        "inactiveDate": "2016-11-08T21:45:46.510Z",
        "hireDate": "2016-11-08T21:45:46.510Z",
        "terminationDate": "2016-11-08T21:45:46.510Z",
        "rehireStatus": true,
        "employmentType": 0,
        "employmentTypeName": "Full-Time",
        "referral": "string",
        "atHome": true,
        "hiringSource": "string",
        "ntLoginName": "string",
        "scheduleNotification": "5",
        "federatedId": "string",
        "sipUser": "string",
        "useTeamMaxEmailInboxCount": true,
        "maxEmailInboxCount": 0
      }
    ]
  }
}

我正在使用Newtonsoft反序列化JSON。但是，对于每个不同的调用，将有不同的键/值对，例如：

{
  "resultSet": {
    "businessUnitId": 0,
    "lastPollTime": "2016-11-08T21:45:46.604Z",
    "teams": [
      {
        "teamId": 0,
        "teamName": "string",
        "isActive": true,
        "description": "string",
        "notes": "string",
        "lastUpdateTime": "2016-11-08T21:45:46.604Z",
        "inViewEnabled": true,
        "wfoEnabled": true,
        "wfmEnabled": true,
        "qmEnabled": true,
        "maxConcurrentChats": 0,
        "agentCount": 0,
        "maxEmailInboxCount": true,
        "inViewGamificationEnabled": true,
        "inViewChatEnabled": true,
        "inViewLMSEnabled": true,
        "analyticsEnabled": true
      }
    ],
    "agents": [
      {
        "agentId": 0,
        "firstName": "string",
        "lastName": "string"
      }
    ]
  }
}

我目前正在接受HTTP响应并反序列化JSON以创建可用的.NET对象。为此，这是我缩短的代码，省略了HTTP请求，假设请求成功：

        If Not String.IsNullOrEmpty(responseBody) Then
            ' Success. Do something with the response.
            'Declare object for holding the JSON from the API call for this call only (class does not fit other calls)
            Dim resultSet As GetAgentsAPICall = New GetAgentsAPICall
            'Deserialize JSON response into the new resultSet object
            resultSet = JsonConvert.DeserializeObject(responseBody)

问题是我需要为每个API调用创建一个特定的类，而不是只能使用JSON格式的字符串并将其抛入具有与键/值匹配的属性的对象中。下面是我只有上面的API调用（列出的第一个，长度更长）的类：

Public Class GetAgentsAPICall
    Public Property resultSet As Resultset
End Class

Public Class Resultset
        Public Property _links As _Links
        Public Property businessUnitId As Integer
        Public Property lastPollTime As Date
        Public Property totalRecords As Integer
        Public Property agents() As Agent
    End Class

    Public Class _Links
        Public Property self As String
        Public Property _next As String
        Public Property previous As String
    End Class

    Public Class Agent
        Public Property agentId As Integer
        Public Property userName As String
        Public Property firstName As String
        Public Property middleName As String
        Public Property lastName As String
        Public Property emailAddress As String
        Public Property isActive As Boolean
        Public Property teamId As Integer
        Public Property teamName As String
        Public Property reportToId As Integer
        Public Property reportToName As String
        Public Property isSupervisor As Boolean
        Public Property lastLogin As Date
        Public Property lastUpdated As Date
        Public Property location As String
        Public Property custom1 As String
        Public Property custom2 As String
        Public Property custom3 As String
        Public Property custom4 As String
        Public Property custom5 As String
        Public Property internalId As String
        Public Property profileId As Integer
        Public Property profileName As String
        Public Property timeZone As String
        Public Property country As String
        Public Property countryName As String
        Public Property state As String
        Public Property city As String
        Public Property chatRefusalTimeout As Integer
        Public Property phoneRefusalTimeout As Integer
        Public Property workItemRefusalTimeout As Integer
        Public Property defaultDialingPattern As Integer
        Public Property defaultDialingPatternName As String
        Public Property teamDefaultMaxChats As Boolean
        Public Property maxConcurrentChats As Integer
        Public Property notes As String
        Public Property createDate As Date
        Public Property inactiveDate As Date
        Public Property hireDate As Date
        Public Property terminationDate As Date
        Public Property rehireStatus As Boolean
        Public Property employmentType As Integer
        Public Property employmentTypeName As String
        Public Property referral As String
        Public Property atHome As Boolean
        Public Property hiringSource As String
        Public Property ntLoginName As String
        Public Property scheduleNotification As String
        Public Property federatedId As String
        Public Property sipUser As String
        Public Property useTeamMaxEmailInboxCount As Boolean
        Public Property maxEmailInboxCount As Integer
End Class

我试图避免预先构建20或30个类似的冗长类，而是在运行中构建可修改的列表或对象。我将需要获取值并将它们存储在数据库中或修改它们并使用另一个API调用来将值POST回来。有没有人有最佳实践，或者我是否坚持20-30个庞大的课程定义？

谢谢你的时间！

Answer 1

使用JObject解析它，也可以使用LINQ查询（参见位于Newtonsoft.Json.Linq命名空间下的Newtonsoft的LINQ to JSON API）：

JObject o = JObject.Parse(@"{
    'CPU': 'Intel',
    'Drives': [
        'DVD read/writer',
         '500 gigabyte hard drive'
     ]
}");

string cpu = (string)o["CPU"];
// Intel

string firstDrive = (string)o["Drives"][0];
// DVD read/writer

IList<string> allDrives = o["Drives"].Select(t => (string)t).ToList();
// DVD read/writer
// 500 gigabyte hard drive

示例在C＃中，但您可以在StackOverflow上找到相关的VB.NET答案（例如，查看the answer here）。

VB.NET动态地将Newtonsoft JSON反序列化为对象

1 个答案: