javascript - ajax 调用永远不会回发到服务器

Question

我正在尝试向服务器发出 ajax 回调以将新数据保存到数据库中:这是我的代码:

$.ajax({
    type: 'POST',
    url: '@Url.Action("SaveNewApplication")',
    contentType: 'application/json; charset=utf-8',
    data: {
        appName: newAppName,
        appDesc: newAppDesc,
        expire: newDaysToExpire,
        displayNote: newDspNote,
        adminRole: newAdminRole,
        defualtRole: newDefaultRole,
        active: newIsActive
    },
    dataType: '',
    success: function () {
        alert("new data has been saved");
    },
    error: function () {
        alert("Error happened whiles saving the new application data");
    }
});

我在“SaveNewApplication”函数中设置了断点，但断点从未被击中!这是“SaveNewApplication”函数:

    [HttpPost]
    [OutputCache(Duration = 0)]
    public void SaveNewApplication(string appName, string appDesc, int expire, string displayNote, string adminRole,
       string defualtRole, bool active)
    {

    }

ajax调用中的success函数永远不会被执行

Answer 1

如果您将 contentType 指定为 json，请确保您实际上正在发送 JSON。 JSON.stringify() converts javascript values into JSON strings

$.ajax({
    type: 'POST',
    url: '@Url.Action("SaveNewApplication")',
    contentType: 'application/json; charset=utf-8',
    data: JSON.stringify({
        appName: newAppName,
        appDesc: newAppDesc,
        expire: newDaysToExpire,
        displayNote: newDspNote,
        adminRole: newAdminRole,
        defualtRole: newDefaultRole,
        active: newIsActive
    }),
    dataType: '',
    success: function () {
        alert("new data has been saved");
    },
    error: function () {
        alert("Error happened whiles saving the new application data");
    }
});