Ajax調用返回500內部服務器錯誤

Question

我正在嘗試在不使用其他頁面加載的情況下使Google地圖出現在我的網頁上。 嘗試調用我擁有的Web方法時，我總是收到錯誤消息。 這是我用來調用Web方法的代碼：

的HTML

<form id="cSharpServerSideForm" runat="server">
        <asp:ScriptManager ID="_scriptManager" runat="server">
          <Services>
            <asp:ServiceReference Path="WebServices/Ajax.asmx" />
          </Services>
        </asp:ScriptManager>
    </form>

Javascript：

//To get webservice (located in document.ready)
vars.service = MyMap.WebServices.Ajax;

getInputForCenterMap = function () {
//The Jarray used
var jArrayCoords;  

var ResponseArray;

//Input values
tCity = "";
tState = "";
tZip = "";

//Gets input values
tCity = $('#cityInput').val();
tState = $('#stateInput').val();
tZip = $('#zipInput').val();

//Checks to see inputs entered
if (tZip == "" && tState == "" && tCity == "") { //Nothing entered
    //Error message
    $('#cszErrorMessage').html("Please enter a city/state or zip code");
} else {
    //In case of errors
    try {
        //Check what has been entered
        if (tZip == "") {    //City and state entered
            //Init array call
            jArrayCoords = new Array(2);
            //Adds city and state to array
            jArrayCoords[0] = tCity;
            jArrayCoords[1] = tState;

        } else {    //Zip entered
            //Init array call
            jArrayCoords = new Array(1);
            //Adds city and state to array
            jArrayCoords[0] = tZip;
        }

        //Calls web service
        vars.service.getMapCenterCoords(jArrayCoords, function (response) {
            //Turns response into a jarray
            responseArray = new Array(response);
            //Rest of code
        });

    } catch (error) {
        //Error message
    }
}

C＃

  public double[] getMapCenterCoords(JArray userLocationInformation)
    {
      //Method information
    }

一旦調用c＃方法，我就會收到錯誤消息。 這是錯誤消息：

500 Internal Server Error

"System.ArgumentException"

"Argument is not a JToken."

" at Newtonsoft.Json.Linq.JContainer.EnsureValue(Object value) at Newtonsoft.Json.Linq.JContainer.System.Collections.IList.Add(Object value) at System.Web.Script.Serialization.ObjectConverter.AddItemToList(IList oldList, IList newList, Type elementType, JavaScriptSerializer serializer, Boolean throwOnError) at System.Web.Script.Serialization.ObjectConverter.ConvertListToObject(IList list, Type type, JavaScriptSerializer serializer, Boolean throwOnError, IList& convertedList) at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject) at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject) at System.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary`2 rawParams) at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters) at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams) at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)"

有什么建議么？

Answer 1

查看Fiddler中的請求，並查看實際情況。 它應該可以幫助您隔離問題。

另外，您是否嘗試過在Web方法中設置斷點？ 它甚至做到了這一點嗎？