AJAX路径不对

时间:2016-02-24 17:37:15

标签: c# jquery asp.net-mvc-4 asp.net-ajax

我有一个带有几个级联下拉列表的Web应用程序。所以我使用ajax来更新下一个下拉列表的值。我把javascript脚本放在一个单独的文件中。

// Code that triggers when there is a change in Activity drop down.
    $('#ActivityId').change(function () {
        var activityId = $(this).val();

        // Empty the Workstation.
        $('#WorkstationId').empty();

        $('.showhide-workstation').show();

        var url = "~/WorkOrderSubmissions/GetWorkstationsByActivityJson";
        // AJAX call that re-populate Workstation drop down depending on the Activity selected.
        $.ajax({
            type: 'POST',
            url: url,
            dataType: 'json',
            data: { activityId: activityId },
            success: function (codes) {
                $('#WorkstationId').append('<option value=""></option>');
                $.each(codes, function (i) {
                    $('#WorkstationId').append('<option value = "' + codes[i].Value + '">' + codes[i].Text + '</option>');
                });
            },
            error: function (ex) {
                $('#WorkstationId').append('<option value=""></option>');
            }
        }); // END $.ajax() on GetRejectCodesByActivityJson
    }); // END $('#ActivityId').change()

当我从Visual Studio内部运行代码时,代码可以正常工作。当我将其部署到本地Web服务器时,它不起作用。我将其部署到

http://localhost/mea

当我在Chrome中打开开发者工具时,我看到了错误。

POST http://localhost/~/WorkOrderSubmissions/GetLinesByWorkorderJson 404 (Not Found)

我试图将网址更改为

url = ~/WorkOrderSubmissions/GetLinesByWorkorderJson
url = /WorkOrderSubmissions/GetLinesByWorkorderJson
url = WorkOrderSubmissions/GetLinesByWorkorderJson

它们都不起作用。我以为〜应该转到Web应用程序的根目录,即http://localhost/mea

1 个答案:

答案 0 :(得分:3)

~语法仅由ASP.Net识别;它将由任何JS代码按字面意思理解。您需要通过C#代码向JS提供URL:

var url = '@Url.Content("~/WorkOrderSubmissions/GetWorkstationsByActivityJson")';

或者更好:

var url = '@Url.Action("GetWorkstationsByActivityJson", "WorkOrderSubmissions")';