[英]webmethod shows 500 (Internal Server Error)
我正在尝试从alertBook.aspx.vb调用网络方法。 但是,每当我单击按钮时,我都会收到错误500(内部服务器错误)。
这是从javascript调用网络方法的正确方法吗? 我是javascript新手。
提前致谢。
我的JavaScript如下:
function webMethod() {
setInterval(function () {
$.ajax({
type: "post",
url: "alertBook.aspx/newUid",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
OnSuccess(result);
},
error: function (xhr, status, error) {
OnFailure(error);
}
});
}, 3000);
}
function OnSucceeded(response) {
alert(response);
//pushNoti(response, "info", "y");
}
function OnFailure(error) {
alert(error);
}
alertBook.aspx是
<a class="btn btn-info" onclick="webMethod()">WebMethod</a>
我的网络方法如下:
<WebMethod()> _
Public Shared Function newUid(ByVal msg As String) As String
Dim objForm As New alertBook
Dim objUtl As New uClass.fUtilities
Dim sqlQuery As String
Dim UID1, UID2 As String
Dim notiStr As String
Dim objDb As New uClass.dbFunctions("myCon")
Dim dtRecords As DataTable
sqlQuery = "select top 1 UID from alertsBook order by UID desc"
If objDb.getDataTable(dtRecords, sqlQuery) = False Then
Return objForm.displayMessage("Error", objDb.errDesc)
End If
For rCount = 0 To dtRecords.Rows.Count - 1
UID1 = dtRecords.Rows(rCount)("UID")
Next
If UID1 <> UID2 Then
notiStr = "<script> " & displayNoti("", "info", "New Message", True) & "</script>"
UID2 = UID1
'scriptDiv.InnerHtml = notiStr
Else
notiStr = ""
End If
Return notiStr
End Function
您应该查找有关该错误的更多详细信息。 您可以使用
error: function (xhr, status, error){
alert(xhr.status);
alert(xhr.responseText);
}
xhr.responseText
包含有关ajax错误的详细信息。
获取更多详细信息或错误,并相应地更改代码。
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