为什么这个ajax调用失败，导致我的控制器方法无法被调用？ [英] Why is this ajax call failing, causing my controller method to not get called?

问题描述

我正在点击这个ajax调用的错误部分，看到'btnTestProduceUsageSettings'中的错误'：

I'm hitting the "error" part of this ajax call, seeing "'error in btnTestProduceUsageSettings'":

$("#btnTestProduceUsageSettings").click(function () {
            var dom = $('#dayofmonthselect').val();
            var ord = $('#ordinalselect').val();
            var dow = $('#dayofweekselect').val();
            var wom = $('#weekormonthselect').val();
            var daterangefromval = $('#produsagefrom').val(); 
            var daterangetoval = $('#produsageto').val();
            var unitval = $('#unitsselect').val();
            var reportId = 1;

            $.ajax({
                type: 'GET',
                url: '@Url.Action("GetTestSettingVals", "TestSettings")',
                data: { unit: unitval, report: reportId, dayofmonth: dom, ordinal: ord, dayofweek: dow, 
weekormonth: wom, fromval: daterangefromval, toval: daterangetoval },
                cache: false,
                success: function (returneddata) {
                    var nextgendate = returneddata.testsettings.NextGenDate;
                    var nextfromdate = returneddata.testsettings.NextFromDate;
                    var nexttodate = returneddata.testsettings.NextToDate;

                    alert('If you save the current configuration, the Produce Usage report would next be sent on ' + nextgendate + ' and cover data from ' + nextfromdate + ' to ' + nexttodate);
                },
                error: function () {
                    alert('error in btnTestProduceUsageSettings');
                }
            });

        }); 

JSLint没有发现任何真正的错误（超出其通常的挑剔）。至少有一个参数始终为空。我想知道这是问题，但我试过这个，只是为了确保空值不会导致问题：



。 。 。

var ord =''; // $（'＃ordinalselect'）。val（）;

var dow =''; // $（'＃dayofweekselect'）。val（）;

var wom =''; // $（'＃weekormonthselect'）。val（）;

。 。 。



...它仍然失败。



应该调用的Controller方法由于失败，根本没有达成。定义如下：



public JsonResult GetTestSettingVals（string unit，int RptID，string dayOfMonthGen，

string ordinalGen，string dayOfWeekGen，string weekOrMonthGen，

int fromIntDateRange，int toIntDateRange）



因此，通过Chrom Dev Tools中的断点逐步执行代码，我达到了$。 ajax（{行，但不是Controller方法中的断点（在Visual Studio中），在最后一行中有一个如下所示：



公共类TestSettingsController：控制器

{

public JsonResult GetTestSettingVals（string unit，int RptID，string dayOfMonthGen，string ordinalGen，string dayOfWeekGen，string weekOrMonthGen，int fromIntDateRange，int toIntDateRange）

{

TestSettingsModel model = new TestSettingsModel（）;



我还有其他的ajax / controller组合设计工作正常的方式相同，所以我看不出挂机在这里...我在这里错过了一个明显或隐蔽的问题吗？



我尝试了什么：



我想知道是否发送一些零值可能是问题，但我试过这个，只是为了确保空值不会导致问题：



。 。 。

var ord =''; // $（'＃ordinalselect'）。val（）;

var dow =''; // $（'＃dayofweekselect'）。val（）;

var wom =''; // $（'＃weekormonthselect'）。val（）;

。 。 。



...它仍然失败。



应该调用的Controller方法由于失败，根本没有达成。定义如下：



public JsonResult GetTestSettingVals（string unit，int RptID，string dayOfMonthGen，

string ordinalGen，string dayOfWeekGen，string weekOrMonthGen，

int fromIntDateRange，int toIntDateRange）



因此，通过Chrom Dev Tools中的断点逐步执行代码，我达到了$。 ajax（{行，但不是Controller方法中的断点（在Visual Studio中），在最后一行中有一个如下所示：



公共类TestSettingsController：控制器

{

public JsonResult GetTestSettingVals（string unit，int RptID，string dayOfMonthGen，string ordinalGen，string dayOfWeekGen，string weekOrMonthGen，int fromIntDateRange，int toIntDateRange）

{

TestSettingsModel model = new TestSettingsModel（）;



我还有其他的ajax / controller组合设计工作正常的方式相同，所以我看不到挂断在这里...我在这里错过了一个明显或隐蔽的问题吗？

JSLint doesn't find anything really wrong with it (beyond its usual nitpickiness). At least one of the params is always null. I wondered it that was the problem, but I tried this, just to make sure the null values were not causing the problem:

. . .
var ord = ''; //$('#ordinalselect').val();
var dow = ''; //$('#dayofweekselect').val();
var wom = ''; //$('#weekormonthselect').val();
. . .

...and it still failed.

The Controller method that is supposed to be called isn't being reached at all because of the failure. It is defined:

public JsonResult GetTestSettingVals(string unit, int RptID, string dayOfMonthGen,
string ordinalGen, string dayOfWeekGen, string weekOrMonthGen,
int fromIntDateRange, int toIntDateRange)

So stepping through the code, with a breakpoint in Chrom Dev Tools, I reach the "$.ajax({" line, but not the breakpoint in the Controller method (in Visual Studio), which has one on the last line shown below:

public class TestSettingsController : Controller
{
public JsonResult GetTestSettingVals(string unit, int RptID, string dayOfMonthGen, string ordinalGen, string dayOfWeekGen, string weekOrMonthGen, int fromIntDateRange, int toIntDateRange)
{
TestSettingsModel model = new TestSettingsModel();

I have other ajax/controller combinations designed the same way that work fine, so I can't see what the hangup is here...am I missing an either obvious or well-concealed problem here?

What I have tried:

I wondered if sending some null vals might be the problem, but I tried this, just to make sure the null values were not causing the problem:

. . .
var ord = ''; //$('#ordinalselect').val();
var dow = ''; //$('#dayofweekselect').val();
var wom = ''; //$('#weekormonthselect').val();
. . .

...and it still failed.

The Controller method that is supposed to be called isn't being reached at all because of the failure. It is defined:

public JsonResult GetTestSettingVals(string unit, int RptID, string dayOfMonthGen,
string ordinalGen, string dayOfWeekGen, string weekOrMonthGen,
int fromIntDateRange, int toIntDateRange)

So stepping through the code, with a breakpoint in Chrom Dev Tools, I reach the "$.ajax({" line, but not the breakpoint in the Controller method (in Visual Studio), which has one on the last line shown below:

public class TestSettingsController : Controller
{
public JsonResult GetTestSettingVals(string unit, int RptID, string dayOfMonthGen, string ordinalGen, string dayOfWeekGen, string weekOrMonthGen, int fromIntDateRange, int toIntDateRange)
{
TestSettingsModel model = new TestSettingsModel();

I have other ajax/controller combinations designed the same way that work fine, so I can't see what the hangup is here...am I missing an either obvious or well-concealed problem here?

推荐答案

（ ＃btnTestProduceUsageSettings）。click（ function （）{
var dom =

("#btnTestProduceUsageSettings").click(function () { var dom =

（' ＃dayofmonthselect'）。val（）;
var ord =

('#dayofmonthselect').val(); var ord =

（' ＃ordinalselect'）VAL（）;
var dow =

('#ordinalselect').val(); var dow =

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