将身体的请求发布到模型中

Question

我必须使用javascript实现它。

我有这堂课：

Public Class RecommendedJobsData
    Public Property searchedJobsList As List(Of JobInfo)
    Public Property jobFromStorage As JobInfo
    Public Property totalJobsCount As Integer
    Public Property adType As AdType

    Public Sub New() ' default constructor

    End Sub

    ' constructor with parameters
    Public Sub New(searchedJobsList As List(Of JobInfo), jobFromStorage As JobInfo, totalJobsCount As Integer, adType As AdType)
        Me.searchedJobsList = searchedJobsList
        Me.jobFromStorage = jobFromStorage
        Me.totalJobsCount = totalJobsCount
        Me.adType = adType
    End Sub
End Class

我正在尝试向此功能发送帖子请求：

<JsonpFilter()>
Public Function GetToken(header As RequestHeader, body As RecommendedJobsData) As String

    Return String.Empty

End Function

所以我使用了javascript：

var http = new XMLHttpRequest();

http.open("POST", url, true);

//Send the proper header information along with the request
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

http.onreadystatechange = function () {//Call a function when the state changes.
    if (http.readyState == 4 && http.status == 200) {
        alert(http.responseText);
    }
}
http.send(apiParams);

标题传递正常，但正文不是..

它进入默认构造函数而不是获取参数的构造函数，然后，GetToken函数的主体对象中存在空值。

这是apiParams：

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