JQuery之ASP.NET Web 服务 (.asmx)之内部服务器错误 (500)

我看到了很多关于这个主题的问题，但从来没有见过这个。我可以从浏览器窗口调用此 Web 服务，但我从 AJAX 收到错误。我收到内部服务器错误异常 (500)。它可能必须对 JQuery 中的 URL 执行某些操作，因为我是从本地主机连接的。这是我的 WS(简化版本):

<System.Web.Script.Services.ScriptService()> _ 
<WebService(Namespace:="http://tempuri.org/webdienst/_default")> _ 
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _ 
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _ 
Public Class _default 
    Inherits System.Web.Services.WebService 
 
    <WebMethod()> _ 
    <ScriptMethod(ResponseFormat:=ResponseFormat.JSON)> _ 
    Public Function getOrganizerEventsJSON(ByVal strUser As String, ByVal strPasswort As String) As TEvent 
        Dim t As TEvent 
        'I get the event for the specified username and password 
        Return t 
 
    End Function 
End Class 

这是我的 JS:

var ASMX = "http://localhost:56035/default.asmx/"; 
jQuery.callAsmx = function (method, data, onSuccess, onError) { 
   var url = ASMX + method; 
   return $.ajax({ 
        type: "POST", 
        url: url, 
        data: $.stringify(data), 
        contentType: "application/json; charset=utf-8", 
        dataType: "json", 
        success: function (response) { 
            if (typeof onSuccess == "function") { 
                onSuccess(response.d); 
            } 
        }, 
        error: function (msg) { 
            if (msg.status != 0) { 
                if (typeof onGlobalError == "function") { 
                    onGlobalError([msg],  
                    "Error while calling " + url, ERRORTYPE.error); 
                } 
                if (typeof onError == "function") { 
                    onError(msg); 
                } 
            } 
        } 
    }); 
}; 
 
$.callAsmx("GetOrganizerEventsJSON", { strUser: username, strPasswort: password }, onEventsLoaded); 

谢谢!

请您参考如下方法:

我有同样的错误并且可以解决它:

您应该删除以下行:

    contentType: "application/json; charset=utf-8", 
    dataType: "json",