c# - ASMX 似乎缓存

Question

我有以下 ASMX 网络服务:

// removed for brevity //

namespace AtomicService
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    [ScriptService]
    public class Assets : WebService
    {
        private static readonly ILog Log = LogManager.GetLogger(typeof(Validation));
        [WebMethod]
        [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public string CityCreate(string cityname, string state, string country,
            decimal timezoneoffset, decimal lat, decimal lon)
        {
            var response = new Dictionary<string, string>();
            if(string.IsNullOrEmpty(cityname) || (string.IsNullOrEmpty(country)))
            {
                response.Add("Response", "empty");
                return JsonConvert.SerializeObject(response, Formatting.Indented);
            }
            int tzid;
            int ctyid;
            try
            {
                tzid = AtomicCore.TimezoneObject.GetTimezoneIdByGMTOffset(timezoneoffset);
                var cty = AtomicCore.CountryObject.GetCountry(country);
                ctyid = cty.CountryId;
            }
            catch (Exception)
            {
                response.Add("Response", "errordb");
                return JsonConvert.SerializeObject(response, Formatting.Indented);
            }
            if(AtomicCore.Validation.DoesCityAlreadyExistByLatLon(cityname, country, lat, lon))
            {
                response.Add("Response", "exists");
                return JsonConvert.SerializeObject(response, Formatting.Indented);
            }
            const string pattern = @"^(?<lat>(-?(90|(\d|[1-8]\d)(\.\d{1,6}){0,1})))\,{1}(?<long>(-?(180|(\d|\d\d|1[0-7]\d)(\.\d{1,6}){0,1})))$";
            var check = new Regex(pattern, RegexOptions.IgnorePatternWhitespace);
            bool valid = check.IsMatch(lat + "," + lon);
            if(valid == false)
            {
                response.Add("Response", "badlatlon");
                return JsonConvert.SerializeObject(response, Formatting.Indented);
            }
            BasicConfigurator.Configure();
            Log.Info("User created city; name:" + cityname + ", state:" + state + ", countryid:" + ctyid + ", timezoneid:" + tzid + ", lat:" + lat + ", lon:" + lon + "");

            //will return id of created city or 0.
            var result = AtomicCore.CityObject.CreateCity(cityname, state, ctyid, tzid, lat.ToString(), lon.ToString(), string.Empty);
            response.Add("Response", result > 0 ? "True" : "errordb");
            return JsonConvert.SerializeObject(response, Formatting.Indented);
        }
    }
}

这是由 JQuery $.ajax 调用调用的:

$.ajax({
                            type: "POST",
                            url: "http://<%=Atomic.UI.Helpers.CurrentServer()%>/AtomicService/Assets.asmx/CityCreate",
                            data: "{'cityname':'" + $('#<%=litCity.ClientID%>').val() + "','state':'" + $('#<%=litState.ClientID%>').val() + "','country':'<%=Session["BusinessCountry"]%>','timezoneoffset':'" + $('#<%=litTimezone.ClientID%>').val() + "','lat':'" + $('#<%=litLat.ClientID%>').val() + "','lon':'" + $('#<%=litLng.ClientID%>').val() + "'}",
                            contentType: "application/json",
                            dataType: "json",
                            success: function (msg) {
                                if (msg["d"].length > 0) {
                                    var data = $.parseJSON(msg.d);
                                    if (data.Response > 0) {
                                        //everything has been saved, ideally we
                                        //want to get the cityid and pass it back
                                        //to the map page so we can select it...
                                        alert('Hazzah!');
                                        $(this).dialog('close');
                                    } else {
                                        if(data.Response == 'errordb')
                                        {
                                            alert("db");
                                        }
                                        if(data.Response == 'exists')
                                        {
                                            alert("exists");
                                        }
                                        if(data.Response == 'badlatlon')
                                        {
                                            alert("badlatlon");
                                        }
                                        if(data.Response == 'empty')
                                        {
                                            alert("empty");
                                        }

                                        $('#serviceloader').hide();
                                        $('#<%=txtFindMyCity.ClientID%>:input').attr('disabled', false);
                                        $('#erroroccured').show('slow');
                                        $('#errortext').html("Unfortunately, we can't save this right now. We think this city may already exist within Atomic. Could you please check carefully and try again? If this is an obvious error, please contact us and we'll get you started.");
                                    }
                                } else {
                                    $('#serviceloader').hide();
                                    $('#<%=txtFindMyCity.ClientID%>:input').attr('disabled', false);
                                    $('#erroroccured').show('slow');
                                    $('#errortext').html("Unfortunately, we can't save this right now. Our data service is not responding.  Could you perhaps try again in a few minutes? We're very sorry. Please contact us if this continues to happen.");
                                }
                            },
                            error: function (msg) {
                                $('#serviceloader').hide();
                                $('#<%=txtFindMyCity.ClientID%>:input').attr('disabled', false);
                                $('#erroroccured').show('slow');
                                $('#errortext').html("Unfortunately, we can't save this right now. Perhaps something has gone wrong with some of our data services. Why not try again? If the problem persists, please let us know and we'll get you started.");
                            }
                        });

尽管如此，我总是收到 { "Response": "False"} 。我认为这可能是缓存问题 - 但我根本无法让 AJAX 运行该服务。当我直接转到 asset.asmx 并调用服务时，CreateCity 方法运行正确。

这是一个经典的木有木有——我看了太久了，我要放弃活下去的意志了……

因此，问题是:我希望 CreateCity 服务在被 $.ajax 调用时正常工作，并且不接收{ "Response": "False"} 响应。任何人都可以就如何使用我提供的代码实现这一目标提供任何指导、帮助或帮助吗？请记住，我相信我的服务可能正在缓存(因此 { "Response": "False"} 响应)...

欢迎帮助、建议、批评和一般评论...

Answer 1

您不需要手动对响应进行 JSON 序列化。这由启用脚本的服务自动处理。只需从您的 Web 方法返回一个强类型对象。输入相同。您还必须确保对请求参数进行正确的 URL 编码。所以从定义模型开始:

public class City
{
    public string Cityname { get; set; }
    public string State { get; set; }
    public string Country { get; set; }
    public decimal Timezoneoffset { get; set; }
    public decimal Lat { get; set; }
    public decimal Lon { get; set; }
}

public class Response
{
    public string Message { get; set; }
    public bool IsSuccess { get; set; }
}

然后:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
[ScriptService]
public class Assets : WebService
{
    private static readonly ILog Log = LogManager.GetLogger(typeof(Validation));

    [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public Response CityCreate(City city)
    {
        var response = new Response();

        // ... process and populate the return message, 
        // set the IsSuccess boolean property which will
        // be used by the client (see next...)

        return response;
    }
}

在客户端:

$.ajax({
    type: 'POST',
    url: '<%= ResolveUrl("~/Assets.asmx/CityCreate") %>',
    contentType: 'application/json',
    dataType: 'json',
    data: JSON.stringify({ 
        cityname: $('#<%=litCity.ClientID%>').val(),
        state: $('#<%=litState.ClientID%>').val(),
        country: '<%=Session["BusinessCountry"]%>',
        timezoneoffset: $('#<%=litTimezone.ClientID%>').val(),
        lat: $('#<%=litLat.ClientID%>').val(),
        lon: $('#<%=litLng.ClientID%>').val()
    }),
    success: function (result) {
        // result.d will represent the response so you could:
        if (result.d.IsSuccess) {
             ...
        } else {
             ...
        }
    };
});