将数据传递给处理程序的 Jquery ajax 不起作用Asp.net、C#、Jquery

如何解决将数据传递给处理程序的 Jquery ajax 不起作用Asp.net、C#、Jquery

我使用 ajax 调用将一些表单数据传递到 json 格式的处理程序中，但 ajax 不起作用。 我已经使用 $('form').serializeArray() 从表单数据传递数据，并使用 ajax 调用传递数据。在这种情况下，我传递了静态数据，但 ajax 调用仍然不起作用。

这是 jQuery 代码。

function SessionLogAutoSave() {
    var sendInfo =
    {
        "ctl00$Header1$cbo_Practice": "ea2aae16-a7f9-4e75-82b5-d2c231c97cf6","ctl00$cph_MainContent$OFTAddRecord$hdnUrl": "","ctl00$cph_MainContent$hdnSessionId": "yyuicdueevmdeynp2q12mrb1","ctl00$cph_MainContent$hdnPracticeId": "870ee142-eb27-4d37-bba2-061fa5f801e3","ctl00$cph_MainContent$hdnRecordId": "","ctl00$cph_MainContent$hdnUserId": "d220da1a-d855-4f90-b8db-a84bc5ba8f51","ctl00$cph_MainContent$txt_Name": "","ctl00$cph_MainContent$txt_Address": "","ctl00$cph_MainContent$txt_ContactNumber": "","ctl00$cph_MainContent$cbo_ComplaintBy": "1","ctl00$cph_MainContent$cbo_ComplaintReceivedBy": "83beebf4-e6ea-49b3-a64f-ed20f755afdd","ctl00$cph_MainContent$cbo_PersonHandlingComplaint": "83beebf4-e6ea-49b3-a64f-ed20f755afdd","ctl00$cph_MainContent$cbo_Type": "1","ctl00$cph_MainContent$txt_ComplaintReceivedOn": "","ctl00$cph_MainContent$txt_ComplaintReceivedOn$dateInput": "","ctl00_cph_MainContent_txt_ComplaintReceivedOn_calendar_SD": "[]","ctl00_cph_MainContent_txt_ComplaintReceivedOn_calendar_AD": "[[1980,1,1],[2099,12,30],[2021,4,22]]","ctl00_cph_MainContent_txt_ComplaintReceivedOn_dateInput_ClientState": "{\"enabled\":true,\"emptyMessage\":\"\",\"validationText\":\"\",\"valueAsstring\":\"\",\"minDateStr\":\"1980-01-01-00-00-00\",\"maxDateStr\":\"2099-12-31-00-00-00\",\"lastSetTextBoxValue\":\"\"}","ctl00_cph_MainContent_txt_ComplaintReceivedOn_ClientState": "","ctl00$cph_MainContent$txt_DateFollowup": "","ctl00$cph_MainContent$txt_DateFollowup$dateInput": "","ctl00_cph_MainContent_txt_DateFollowup_calendar_SD": "[]","ctl00_cph_MainContent_txt_DateFollowup_calendar_AD": "[[1980,"ctl00_cph_MainContent_txt_DateFollowup_dateInput_ClientState": "{\"enabled\":true,"ctl00_cph_MainContent_txt_DateFollowup_ClientState": "","ctl00$cph_MainContent$txt_DetailsComplaint": "","ctl00$cph_MainContent$txt_Followup": "","ctl00$cph_MainContent$txt_DateActionTaken": "","ctl00$cph_MainContent$txt_DateActionTaken$dateInput": "","ctl00_cph_MainContent_txt_DateActionTaken_calendar_SD": "[]","ctl00_cph_MainContent_txt_DateActionTaken_calendar_AD": "[[1980,"ctl00_cph_MainContent_txt_DateActionTaken_dateInput_ClientState": "{\"enabled\":true,"ctl00_cph_MainContent_txt_DateActionTaken_ClientState": "","ctl00$cph_MainContent$txt_DateOutcome": "","ctl00$cph_MainContent$txt_DateOutcome$dateInput": "","ctl00_cph_MainContent_txt_DateOutcome_calendar_SD": "[]","ctl00_cph_MainContent_txt_DateOutcome_calendar_AD": "[[1980,"ctl00_cph_MainContent_txt_DateOutcome_dateInput_ClientState": "{\"enabled\":true,"ctl00_cph_MainContent_txt_DateOutcome_ClientState": "","ctl00$cph_MainContent$txt_ActionTaken": "","ctl00$cph_MainContent$txt_Outcome": "","ctl00$cph_MainContent$rbtndiscussed": "0","ctl00$cph_MainContent$cbo_Status": "1","ctl00$cph_MainContent$hid_Id": "","ctl00$cph_MainContent$hdnAttachments": "","ctl00$cph_MainContent$hdnFileNames": "","ctl00$cph_MainContent$cbo_Months": "4","ctl00$cph_MainContent$cbo_Years": "2021"
    };
    jQuery.ajax({
        url: 'Handlers/SaveSessionLogAutoSave.ashx',data: 'FormData=' + JSON.stringify(sendInfo) + '',contentType: 'application/json;utf-8',dataType: 'json',type: 'GET',cache: false,success: function (data) {
            // you can make a tiny notification here
            return;
        },error: function (responseText,textStatus,XMLHttpRequest) {
            return;
        }
    });
}

我使用处理程序来检索数据。我的处理程序代码是

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace DentalCompliance.Handlers
{
    /// <summary>
    /// Summary description for SaveSessionLogAutoSave
    /// </summary>
    public class SaveSessionLogAutoSave : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            string method = context.Request["FormData"];
            
            context.Response.ContentType = "text/plain";
            context.Response.Write("Hello World");
            //}
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}

我在互联网上搜索，经过 1 天的搜索，我还没有找到任何解决方案。

解决方法

将您的代码更改为：

internal static async Task<string> GetDeviceIdFromMachineName(string machineName)
{
    try
    {
        var client = GetBetaClientUsernamePassword();
        if(client != null)
        {
            var device = (await client.Devices.Request().Filter($"displayName eq '{machineName}'").WithUsernamePassword(<Username>,<Password>).GetAsync()).FirstOrDefault();
            if (device == null)
            {
                return "No matching device found";
            }
            return device.DeviceId;
        }
        return "Error creating Graph client: client was null";
    }
    catch(Exception ex)
    {
        // do some logging
        return $"Error querying for device: {ex.Message}";
    }
}

更改了两件事：1. 请求类型从 GET 到 POST 因为当我们使用 GET 时，您发送的数据会附加到到 URL 并且您发送的数据过多，超出了应用程序中允许的 URL 长度。 2. 删除了 contentType，因为您没有发送 JSON。