AJAX发布请求发送重复的请求

时间:2019-05-29 13:00:29

标签: javascript c# html ajax model-view-controller

我正在发送AJAX POST请求以获取登录表单。如果我输入了错误的组合或正确的组合,那么ajax会发送该请求以及所有其他请求

错误登录:

function incorrect() {
    $('#loginModal .modal-dialog').addClass('shake');
    $('.error').addClass('alert alert-danger').html("Username ou password incorretos!");
    $('input[type="password"]').val('');
    setTimeout(function () {
        $('#loginModal .modal-dialog').removeClass('shake');
    }, 1000);
}

正确登录:

function correct() {
    $('#loginModal .modal-dialog');
    $('.error').removeClass('alert alert-danger');
    $('.error').addClass('alert alert-success').html("Logado com sucesso!");
    $("#reglogin").toggle();
    $("#conta").toggle();
}

Ajax调用:

function loginAjax() {
    $("form").on("submit", function (x) {
        x.preventDefault();

        var form = $(this);

        $.ajax({
            type: 'POST',
            url: '/Login/Login',
            traditional: true,
            data: form.serialize(),
            success: function (data) {
                if (data === false) {
                    incorrect();
                } else if (data === true) {
                    correct();
                }
            }
        });
    });
}

控制器:

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Database"].ToString());
        SqlCommand cmd = new SqlCommand();
        public ActionResult Login(string username, string password)
        {
            conn.Open();
            string passstr = Encrypt(password);
            SqlDataReader reader;

            cmd.Connection = conn;
            cmd.CommandText = string.Format("select * from Cliente where Username='{0}' and Password='{1}'", username, passstr);

            reader = cmd.ExecuteReader();
            if (reader.Read())
            {
                Session["Username"] = username;
                string valueFromSession = Session["Username"].ToString();

                conn.Close();
                return Json(data: true);
            } else
            {
                conn.Close();
                return Json(data: false);
            }

        }

每次提交表格时,我只希望发送一个请求

谢谢!

1 个答案:

答案 0 :(得分:1)

我将$("form").on("submit", function (x)更改为$("form").off("submit").on("submit", function (x),并且有效