Question

我正在尝试读出从后面的代码中的函数给出的JSON数据。我有这个设置：

代码背后：

    <WebMethod()>
Public Shared Function LoadVolgNummer(ByVal EnqDGId As String, ByVal VolgordeId As String) As String
    Dim oRetValue As EnqueteVraag = Nothing
    Try
        oRetValue = EnqueteDetail.LoadQuestion(EnqDGId, VolgordeId)
    Catch ex As Exception
        ReportError(ex.Message, GetCurrentMethod.Name)
    End Try
    Dim serializer As New JavaScriptSerializer
    Dim JSON As String = serializer.Serialize(oRetValue).ToArray
    Return JSON
End Function

这是我从函数中返回的JSON字符串：

{"questionid":1,"question":"De dienstverlening van xxx in het algemeen"}

页面上的JQUERY：

$.ajax({
        type: "POST",
        url: "enquete.aspx/LoadVolgNummer",
        data: JSON.stringify({EnqDGId: '1', VolgordeId: '1'}),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (msg) {
            alert(msg.question);
        },
        error:function() {
            alert('failure in loading volgnummer')
        }
    });

Enquetevraag类：

Public Class EnqueteVraag

Public questionid As Integer
Public question As String

结束班

结果是成功但我无法读出jQuery中的数据。它显示我'未定义'。任何帮助表示赞赏。

亲切的问候

Answer 1

感谢Felix King和Jan Dvorak结案！

JSON.parse（msg.d）。提问

Answer 2

试试这个：

function getQuestions()
{
   var jsonData = $.ajax({
         url: "enquete.aspx/LoadVolgNummer",
         data: JSON.stringify({EnqDGId: '1', VolgordeId: '1'}),
        dataType: "json",
        async: false
    }).responseText;
    jsonData = JSON.parse(jsonData);
    alert(jsonData.question);
}

无法通过后面的代码给出的JSON对象进行迭代

2 个答案: