ajax请求模拟登录

前台

    @if (Session["username"] != null)
                    {
                        <div class="login">
                            <span style="width:155px;height:85px;display:inline-block;margin-left:50px;margin-top:25px;text-align:center">
                                @(Session["username"])&nbsp;&nbsp;您好！<br />欢迎登录@(ChaoXingPMS.Utils.Site.Name)。<br /><a href="interfaceapi?mode=exit&backurl=@(Server.UrlEncode(Request.Url.AbsoluteUri))">退出</a>
                            </span>
                        </div>
                    }
                else
                {
                    <div class="login">
                        证 号:&nbsp;&nbsp;<input type="text" name="username" id="username" class="zjh" /><br />
                        密 码:&nbsp;&nbsp;<input type="password" name="pw" id="pw" class="mm" /><br />
                       <input class="login_btn" type="button" value="登录" name="button" id="login"  style="cursor:pointer"/>
                    </div>
                }

js:

$(function () {
    $("#btn_login").click(function () {
        $(".pop_login").css("display", "block");
        $(".pop_last").css("display", "block");
    });
    $("#close").click(function () {

        $(".pop_login").css("display", "none");
        $(".pop_last").css("display", "none");

    });

    $("#username").keydown(function () {
        if (event.keyCode == )   //回车键的键值为13
            $("#login").click(); //调用登录按钮的登录事件
    })
    $("#pw").keydown(function () {
        if (event.keyCode == )   //回车键的键值为13
            $("#login").click(); //调用登录按钮的登录事件
    })

    $("#login").click(function () {
        var name = $("#username").val();
        var pw = $("#pw").val();
        if (name == "" || pw == "") {
            $("#tip").html("<em>*&nbsp;</em>账号密码不能为空");
            return;
        }
        $.ajax({
            type: "post",
            dataType: "json",
            data: "username=" + name + "&password=" + pw + "&mode=" + loginmode + "&time=" + (new Date().getTime()),
            //url: "InterFaceAPI",
            url: "/interface/LoginData.cshtml",
            error: function (XmlHttpRequest, textStatus, errorThrown) { alert(XmlHttpRequest.responseText); },
            success: function (d) {
                if (d.status == ) {
                    $("#tip").html("");
                    //window.location = '/';
                    location.reload();
                    //$("#logindiv").html("<div class='login_top'>用户登录</div><span style='line-height:58px;'>" + d.uname + "&nbsp;&nbsp;您好！<br/>欢迎登录" + d.wname + "。<a href='/interface/LoginData.cshtml?outtype=logout'>&nbsp;&nbsp;退出</a></span>");
                }
                else {
                    $("#tip").html("<em>*&nbsp;</em>" + d.message);
                }
            }
        });

    });
})

ajax请求:

var username = HttpContext.Current.Request["username"];
    var password = HttpContext.Current.Request["password"];
 var loging_url = appSetting["loging_url"].ToString();
var pwdm5 = ChaoXingPMS.Utils.MD5.Lower32(password);
        string formUrl = loging_url;//url地址
        string returnUrl = "";
        //string logintypej = "CALLNO";
        //string URL = "ReaderTable.aspx";
        string formData = "returnUrl=" + returnUrl + "&rdid=" + username + "&rdPasswd=" + pwdm5;
        CookieContainer cookieContainer = new CookieContainer();
        // 将提交的字符串数据转换成字节数组
        byte[] postData = Encoding.UTF8.GetBytes(formData);
        HttpWebRequest request = WebRequest.Create(formUrl) as HttpWebRequest;
        Encoding myEncoding = Encoding.GetEncoding("gb2312");
        request.Method = "POST";
        request.KeepAlive = false;
        request.AllowAutoRedirect = true;
        request.ContentType = "application/x-www-form-urlencoded";
        request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)";
        request.CookieContainer = cookieContainer;
        request.ContentLength = postData.Length;
        // 提交请求数据
        System.IO.Stream outputStream = request.GetRequestStream();
        outputStream.Write(postData, , postData.Length);
        outputStream.Close();

        HttpWebResponse response;
        Stream responseStream;
        StreamReader reader;
        string srcString;
        response = request.GetResponse() as HttpWebResponse;
        responseStream = response.GetResponseStream();
        reader = new System.IO.StreamReader(responseStream, Encoding.UTF8);
        srcString = reader.ReadToEnd();
        reader.Close();

        //关闭流对象
        reader.Close();
        responseStream.Close();
        reader.Close();
        response.Close();

        //确认是否能获取权限
        if (srcString.IndexOf("欢迎您") > )
        {
            Session["isNowLogin"] = ;//是否是登陆动作
            Session["isLogin"] = ;//是否登陆成功
            Session["username"] = username;
            Session["password"] = password;
            Session["logingMsg"] = "登录成功！";
            if (IsAjax)
            {
                ExecuteResult(c => c.Json(new { status = , uname = username, upwd = password}));
                return;
            }

        }
        else
        {
            Session["isNowLogin"] = ;
            Session["isLogin"] = ;
            Session["logingMsg"] = "登录失败！";
            string message = "登录失败!";
            if (IsAjax)
            {
                ExecuteResult(c => c.Json(new { status = , message = message }));
                return;
            }
        }